OpenHPC is a set of community driven FOSS tools for Linux based HPC. OpenHPC does not have specific hardware requirements.

OpenFormula is an open standard for exchanging recalculated formulae in spreadsheets. OpenFormula is included in version 1.2 of the OpenDocument standard. OpenFormula was proposed and initially drafted by David A. Wheeler.

OpenIKED

OpenDOAR: Directory of Open Access Repositories is a UK-based website that lists academic open access repositories. It is searchable by locale, content and other measures. The service does not require complete repository details and does not search repositories' metadata.OpenDOAR is maintained by the University of Nottingham under the SHERPA umbrella of services and was developed in collaboration with Lund University.

OpenLinux 1.2

OpenDRIVE is an open format specification to describe a road network's logic. Its objective is to standardize the logical road description to facilitate the data exchange between different driving simulators.The initial release of OpenDRIVE was version 0.7 in 2005, as of November 2015 the current release is version 1.4.

OpenLink (TI wireless connectivity)

OpenEd is an online catalog of educational assessments, homework assignments, videos, games and lesson plans aligned to every Common Core standard and several other standards, and includes the only open source formative item bank. The site offers the ability for teachers to assign resources to their students online, letting students take assessments, do homework etc on their own computers or tablets.

OpenGEU

OpenGL-ES

OpenCountry

OpenLinux 2.3

OpenFX (disambiguation)

OpenEpi

OpenH264

OpenEdge Advanced Business Language, or OpenEdge ABL for short, is a business application development language created and maintained by Progress Software Corporation (PSC). The language, typically classified as a fourth-generation programming language, uses an English-like syntax to simplify software development. The language was called PROGRESS or Progress 4GL up until version 9, but in 2006 PSC changed the name to OpenEdge Advanced Business Language (OpenEdge ABL) in order to overcome a presumed industry perception that 4GLs were less capable than other languages. A subset of the language, called SpeedScript, is used in the development of web applications.OpenEdge ABL helps developers to develop applications optionally using its own integrated relational database and programming tool. These applications are portable across computing systems and allow access to various popular data sources without having to learn the underlying data access methods. This means that the end-user of these products can be unaware of the underlying architecture.By combining a fourth generation language and relational database, OpenEdge ABL allows the use of the Rapid Application Development (RAD) model for developing software. A programmer and even end users can do rapid prototyping using the integrated and GUI tools of the development environment.

The OpenHPSDR (High Performance Software Defined Radio) project dates from 2005 when Phil Covington, Phil Harman, and Bill Tracey combined their separate projects to form the HPSDR group. It is built around a modular concept which encourages experimentation with new techniques and devices (e.g. SDR, Envelope Elimination and Restoration) without the need to replace the entire set of boards.

OpenLieroX

OpenJMS is one of the major providers of Java Message Service API, which implements Sun Microsystems' Java Message Service API 1.1 Specification. The current release is OpenJMS 0.7.7-beta-1.Java Message Service is an asynchronous communication mechanism in the distributed system field. It is very helpful in the situation where the distributed components are loosely coupled.

OpenFeint was a social platform for mobile games for devices that ran Android and/or iOS. It was developed by Aurora Feint, a company named after a video game by the same developers. The platform consisted of an SDK for use by games, allowing its various social networking features to be integrated into the game's functionality. OpenFeint was discontinued at the end of 2012.

OpenGraph

openDesktop.org is a content sharing website with focus on the open source community. It centers on sharing of user generated contents such as applications and artwork under free and liberal licensing. openDesktop.org is one of the biggest online communities for sharing such content, serving the official KDE Store and more than 90 million page impressions per month. It's a home for more than 100.000 user generated contents and a place where developers, artists and users come together.

OpenLearning is a for-profit educational technology institution based in Australia that offers a social online learning platform that can deliver massive open online courses (MOOCs).OpenLearning has worked with the University of New South Wales and Taylor's University to deliver the first MOOCs in Australia and Malaysia respectively.In December 2013, OpenLearning launched a cloud based software product for companies to create private educational portals on its platform.In February 2015, OpenLearning raised $1.7 million in funding led by angel investor Clive Mayhew. ASX-listed ICS Global, Robin and Susan Yandle, and Hideaki Fukutake, the director of Japanese education company Benesse Holdings.In June 2015, the Australian Federal Government announced it would be getting its first MOOC delivered by Open Learning.

OpenHMPP (HMPP for Hybrid Multicore Parallel Programming) - programming standard for heterogeneous computing. Based on a set of compiler directives, standard is a programming model designed to handle hardware accelerators without the complexity associated with GPU programming. This approach based on directives has been implemented because they enable a loose relationship between an application code and the use of a hardware accelerator (HWA).

OpenLinux eBuilder

OpenConf

OpenEV

OpenLB is an object-oriented implementation of the Lattice Boltzmann methods (LBM). It is the first implementation of a generic platform for LBM programming, which is shared with the open source community (GPLv2). The code is written in C++ and is used by application programmers as well as developers, with the ability to implement custom models OpenLB supports complex data structures that allow simulations in complex geometries and parallel execution using MPI and OpenMP on high-performance computers. The source code uses the concepts of interfaces and Templates, so that efficient, direct and intuitive implementations of the LBM become possible. The efficiency and scalability has been checked and proved by code reviews. A user manual and a source code documentation by DoxyGen are available on the project page.

OpenCourseWare

OpenKODE

The OpenFabrics Alliance is a non-profit organization that promotes remote direct memory access (RDMA) switched fabric technologies for server and storage connectivity. These high-speed data-transport technologies are used in high-performance computing facilities, in research and various industries.The OpenFabrics Alliance aims to develop open-source software that supports the three major RDMA fabric technologies: InfiniBand, RDMA over Converged Ethernet (RoCE) and iWARP.

Open Cube Solutions, LLC is a French company headquartered in Toulouse, member of the gJ roup EVS Broadcast Equipment.Established on April, 2003, Open Cube Technologies develops, manufactures, licenses, and supports a wide range of software and hardware for the broadcast and cinema industries.Active in computing, broadcast and video, OpenCube Technologies provides MXF-format solutions (MXF server, MXF player, MXF converter, MXF Toolkit) and media content management services.OpenCube has been acquired by EVS Broadcast Equipment in 2010 and is now part of the EVS Media division.The company has been awarded in 2008 at the SATIS (Salon international de l'audiovisuel of Paris) for its product P2SoftHD.Its customers are Airbus, MTV or 20th Century Fox.

OpenCola (disambiguation)

OpenLinux 3.1.1

OpenH.323

OpenEye Scientific Software is an American software company which develops large-scale molecular modelling applications and toolkits.

OpenL Tablets is a business rule management system (BRMS) and a business rules engine (BRE) based on table representation of rules. Engine implements optimized sequential algorithm. OpenL includes such table types as decision table, decision tree, spreadsheet-like calculator.

OpenDOS 7.01.07

OpenDOAR

OpenFog Consortium

OpenLinux Base 1.0

OpenH264 is a free software library for real-time encoding and decoding video streams in the H.264/MPEG-4 AVC format. It is released under the terms of the Simplified BSD License.

OpenGL 3.0

Open Energy Information (OpenEI) is a website for policy makers, researchers, technology investors, venture capitalists, and market professionals with energy data, information, analyses, tools, images, maps, and other resources. It was established by the United States Department of Energy on 9 December 2009.

OpenFlight (or .flt) is a 3d geometry model file format originally developed by Software Systems Inc. for its MultiGen real-time 3d modeling package in 1988. Originally called Flight, the format was designed as a nonproprietary 3d model format for use by real-time 3d visual simulation image generators. The format was later renamed to OpenFlight to denote its nonproprietary image generation (IG) usage.

OpenDisk

OpenFacts

OpenGEU was a free computer operating system based upon the popular Ubuntu Linux distribution, which in turn is based on Debian GNU/Linux. OpenGEU combined the strengths and ease of use of GNOME desktop environment with the lightweight, and graphical eye candy features of the Enlightenment window manager into a unique and user-friendly desktop. While OpenGEU was originally derived from Ubuntu, the design of the user gave it a significantly different appearance to the user, with original art themes, software and tools.

OpenDataPlane

OpenEye Scientific Software

OpenClassrooms

OpenCyc

OpenDocument technical specifications

OpenEMR is a medical practice management software which also supports Electronic Medical Records (EMR). It is ONC Complete Ambulatory EHR certified and it features fully integrated electronic medical records, practice management for a medical practice, scheduling, and electronic billing.The server side is written in PHP and can be employed in conjunction with a LAMP "stack", though any operating system with PHP support is supported.OpenEMR is free and open-source software subject to the terms of the GNU General Public License (GPL). OpenEMR is subject to ongoing efforts of internationalization and localization in multiple languages, and there is free support available in various forums over the world. At the time of writing, commercial support is offered by more than 30 vendors in more than 10 countries.OpenEMR is one of the most popular free electronic medical records in use today with over 7000 downloads per month.

OpenGL ES 3.1

OpenGL Multipipe

OpenGL 3

The OpenLife Grid was a community virtual world developed by the team at 3DX. It was founded in November 2007 by Australian Steve Sima, who is company president at 3DX. The Openlife grid functionality was similar to that of Second Life's main grid. OpenLife ran on the graphics system WindLight, as the main grid does.More than 50,000 accounts were created. However, in early 2012 OpenLife changed its name to 3DMee, and went offline for a rebuild, but the rebuild suffered from operating problems.3DMee reportedly closed in November 2013. The 3DMee website indicates that the virtual world may reopen in 2015.

The OpenFog Consortium (sometimes stylized as Open Fog Consortium) is a consortium of high tech industry companies and academic institutions across the world aimed at the standardization and promotion of fog computing in various capacities and fields.The consortium was founded by Cisco Systems, Intel, Microsoft, Princeton University, Dell, and ARM Holdings in 2015 and now has 57 members across the North America, Asia, and Europe, including Forbes 500 companies and noteworthy academic institutions.

openEHR is an open standard specification in health informatics that describes the management and storage, retrieval and exchange of health data in electronic health records (EHRs). In openEHR, all health data for a person is stored in a "one lifetime", vendor-independent, person-centred EHR.

OpenCube

OpenDOS 7.01.02

OpenFrame

OpenLinux Workstation 3.1.1

OpenFOAM (for "Open source Field Operation And Manipulation") is a C++ toolbox for the development of customized numerical solvers, and pre-/post-processing utilities for the solution of continuum mechanics problems, including computational fluid dynamics (CFD). The code is released as free and open-source software under the GNU General Public License. The OpenFOAM name was registered by OpenCFD Ltd in 2007 and non-exclusively licensed to the OpenFOAM Foundation Ltd in 2011.

OpenGov Foundation

OpenGALEN is a not-for-profit organisation that provides an open source medical terminology. This terminology is written in a formal language called GRAIL (GALEN Representation And Integration Language) and also distributed in OWL.

OpenEXR is a high dynamic range raster file format, released as an open standard along with a set of software tools created by Industrial Light and Magic (ILM), under a free software license similar to the BSD license.It is notable for supporting multiple channels of potentially different pixel sizes, including 64-, 32- and 16-bit floating point values, as well as various compression techniques which include lossless and lossy compression algorithms.

OpenGL Architecture Review Board

The OpenLife Grid was a community virtual world developed by the team at 3DX. It was founded in November 2007 by Australian Steve Sima, who is company president at 3DX. The Openlife grid functionality was similar to that of Second Life's main grid. OpenLife ran on the graphics system WindLight, as the main grid does.More than 50,000 accounts were created.

OpenDocument Specification

OpenGL User Interface Library

OpenGL pipeline

GLUI

OpenDX

The OpenGov Foundation

OpenClonk is a free and open-source 2D action game in which the player controls clonks, small but witty and nimble humanoid beings. It is mainly about mining, settling and fast-paced melees and features tactical gameplay elements. The game has been compared and described as mixture of Worms, The Settlers, Lemmings and Minecraft. The game can be played both single-player and multiplayer and is cross-platform, playable on Microsoft Windows, Linux, and OS X.The OpenClonk project is continuation of the Clonk game series, and is under active development with new features. OpenClonk denotes not just the game, but also the 2D game engine it is based on, which allows the creation of mods using a specially designed scripting language. The source code is available under the ISC license and game content is licensed under CC BY-SA, CC BY and CC0.

OpenLTE is an open source implementation of the 3GPP LTE specifications. In the current version, it includes an eNodeB with a built-in simple Evolved Packet Core, and some tools to scanning and recording LTE signal based on GNU Radio.

The openGear Terminal Equipment Platform is a modular platform for terminal equipment used for video, audio and data signal processing and distribution in the broadcast and production industries. Ross Video is the creator of the openGear platform and licenses it to other companies who then make openGear compliant signal processing cards. The development and sale of openGear compliant cards is royalty-free.The openGear frame physical, electrical and protocol standards and specifications are described in “openGear Platform Specifications”, a document that is maintained and updated by Ross Video.DashBoard is the openGear control and monitoring system which provides unified control over multi-vendor cards within an openGear system. DashBoard is free to download from the openGear.tv website.22 companies are indicated on the openGear website as openGear partners.

OpenFX (OFX), a.k.a. The OFX Image Effect Plug-in API, is an open standard for 2D visual effects or compositing plug-ins. It allows plug-ins written to the standard to work on any application that supports the standard. The OpenFX standard is owned by The Open Effects Association, and it is released under a 'BSD' open source license. OpenFX was originally designed by Bruno Nicoletti at The Foundry Visionmongers.Plug-ins are written as dynamic shared objects, and the API specifies a few entry points that must be implemented by the plug-in.The OpenFX host exposes sets of entry points to the plugin, called suites. The Property Suite is used to manage attribute-value pairs attached to objects defined by all other suites of the API, the Image Effect Suite is used to fetch film frames from the inputs or the output of the effect, and there are other suites to display informative messages or ask questions to the user, handle multithreading, use OpenGL for processing, etc.Each plugin is described by a list of parameters and supported inputs and output. The host may execute various actions, for example to signal that a parameter value has changed or that a portion of a film frame has to be rendered.Optionally, the plugin may also display graphical information over the current frame using OpenGL, and propose interactions using mouse and keyboard (this is called interacts in the OFX specification).An OpenFX host is an application capable of loading and executing OpenFX plugins.

OpenLP is a worship presentation program licensed under the GNU General Public License. It includes the ability to search through lyrics for certain words, search for Bible verses in the Bible, display lyrics and Bible verses in a friendly way to the congregation and interact with popular presentation programs to provide users with an easy way to control a presentation (with LibreOffice Impress, OpenOffice.org Impress or Microsoft Powerpoint).

OpenDesk

The OpenGL Architecture Review Board (ARB) is an industry consortium that governed the OpenGL specification. It was formed in 1992, and defined the conformance tests, approved the OpenGL specification and advanced the standard. On July 31, 2006, it was announced that the ARB voted to transfer control of the OpenGL specification to Khronos Group.Voting members included 3Dlabs, Apple, ATI, Dell, IBM, Intel, Nvidia, SGI and Sun Microsystems, plus other contributing members. Microsoft was an original voting member, but left in March 2003.

OpenDocument/Software/Comparison

OpenGL3

openElement

OpenImageIO is an open source library for reading and writing images. Support for different image formats is realised through plugins. The project is distributed with a modified BSD license.

The OpenDataPlane (ODP) is an open-source project which defines application programming interfaces (APIs) for the networking data plane.Networking by functionality can be defined as:Data plane refers to all the functions and processes that forward packets/frames from one interface to another.Control plane refers to all the functions and processes that determine which path to use. Routing protocols, spanning tree, ldp, etc are examples.Management plane is all the functions you use to control and monitor devices.And data plane can be:SoftwareHardwareSoftware definedOpenDataPlane set of API allows to write effective software defined data plane implementations which describe network hardware System on Chips (network SoCs) capabilities. Application built on top of ODP library are hardware agnostic, portable and use as much hardware accelerators as implementer of ODP can provide.

OpenHPC

OpenFrame is a mainframe rehosting solution developed by TmaxSoft that aims to help customers move existing mainframe assets to the cloud quickly and with minimal risk. It replaces legacy CICS/IMS/JES mainframe engines and shifts business applications written in legacy code like COBOL and PL/I to Linux.

OpenDaylight

OpenComRTOS is a commercial network-centric, formally developed real-time operating system, aimed primarily at the embedded systems market.

OpenGate is a communications platform designed to facilitate a fast development and deployment of robust wireless solutions, to be used as a M2M platform or as a mobile platform.OpenGate acts as a data gateway between remote devices and the applications that need to send and receive information to and from those devices. Making use of a very simple interface and thanks to the Internet, GSM/GPRS and UMTS, OpenGate lowers the cost and the complexity of the implementation of wireless solutions, unifying the language of every connected device.OpenGate has been designed to allow M2M and Mobile developers to concentrate on data exchange and data processing, instead of worrying about obtaining data in a secure and reliable way.

OpenLP is a worship presentation program licensed under the GNU General Public License. It includes the ability to search through lyrics for certain words, search for Bible verses in the Bible, display lyrics and Bible verses in a friendly way to the congregation and interact with popular presentation programs to provide users with an easy way to control a presentation (with LibreOffice Impress, OpenOffice.org Impress or Microsoft Powerpoint). It also includes easy and instant switching between slides, customisable backgrounds, a song database, and video support.

OpenL Tablets

OpenCourseware

The following article details governmental and other organizations from around the world who are in the process of evaluating the suitability of using (adopting) OpenDocument, an open document file format for saving and exchanging office documents that may be edited.

OpenFX (OFX), a.k.a. The OFX Image Effect Plug-in API, is an open standard for 2D visual effects or compositing plug-ins. It allows plug-ins written to the standard to work on any application that supports the standard. The OpenFX standard is owned by The Open Effects Association, and it is released under a 'BSD' open source license.

OpenDataSoft

The OpenFabrics Alliance is a non-profit organization that promotes remote direct memory access (RDMA) switched fabric technologies for server and storage connectivity. These high-speed data-transport technologies are used in high-performance computing facilities, in research and various industries.The OpenFabrics Alliance aims to develop open-source software that supports the three major RDMA fabric technologies: InfiniBand, RDMA over Converged Ethernet (RoCE) and iWARP. The software includes two packages, one that runs on Linux and FreeBSD and one that runs on Microsoft Windows. The alliance worked with two large Linux distributors—Novell and Red Hat—as well as Microsoft on compatibility with their operating systems.

The OpenDocument Foundation, Inc. (not to be confused with The Document Foundation) was an organization set up in 2002 by Sam Hiser and Paul "Buck" Martin (real name Paul E. Merrell) to promote the use of open standards-based XML/RDF document formats for desktop computer use.

OpenDML

The OpenForum was a six-hundred-delegate, three-day conference held in the Cape Town International Convention Centre (CTICC) in Cape Town, South Africa, in May 2012. The aim of the OpenForum was to bring a variety of thought leaders and activists to discuss the inherent paradoxes of societal inequality in Africa focusing on the three interlinking areas of money, power and sex. The event was hosted by the four Open Society Africa Foundations, which are under the umbrella of George Soros's Open Society Foundations.

OpenGear Terminal Equipment Platform

OpenEVSE is an Arduino-based electric vehicle charger created by Christopher Howell. The charger is composed of open-source software and hardware which can be made DIY.

OpenDRIVE (spec)

OpenEV is an open source geospatial toolkit and a frontend to that toolkit. OpenEV was developed using Python and uses the GDAL library to display georeferenced images and elevation data. The application also has image editing capabilities and uses OpenGL to display elevation data in three-dimensions.

The OpenHAN standards for home networks (sometimes called home grids) was promoted by groups such as openAMI and UtilityAMI. Both efforts aim to standardize powerline networking interoperation from a utility point of view and ensure reliable communications co-extant with AC power outlets.Both utilities and vendors of home control have promoted such standards aggressively . The openHAN label usually denotes standards favored by the utilities, not other service providers. It should be distinguished from the openADR standards that were promoted to ensure open access to customer electricity use data by all service providers.

OpenInsight is a database application development tool from Revelation Software. It was first released in 1992; the current version is 10.0.1, released in March of 2018.OpenInsight is a windows-based development tool. It contains its own database which is a type of post-relational database known as a MultiValue database. OpenInsight contains tools for creating database applications that can run on Windows workstations, Windows, Linux, and Novell networks, and browser-based applications. The tools include, but are not limited to, a Table Builder, a Database Manager, editor, debugger and programming language, a forms designer for creating data entry forms, User Interface tools, reporting tools, and deployment tools.OpenInsight's programming language is called Basic+, and is an extension or dialect of the BASIC programming language. OpenInsight applications can use data from Revelation Software's built-in database, or they can use data from SQL Databases, from Rocket Software's Rocket U2 databases, as well as TigerLogic's D3 database.

OpenID Connect (OIDC) is an authentication layer on top of OAuth 2.0, an authorization framework. The standard is controlled by the OpenID Foundation.

OpenFIRST

GLEW

OpenHMPP

OpenEmbedded is a build automation framework and cross-compile environment used to create Linux distributions for embedded devices. The OpenEmbedded framework is developed by the OpenEmbedded community, which was formally established in 2003. OpenEmbedded is the recommended build system of the Yocto Project, which is a Linux Foundation workgroup that assists commercial companies in the development of Linux-based systems for embedded products.The build system is based on BitBake "recipes", which specify how a particular package is built, but also includes lists of dependencies and source code locations, as well as instructions on how to install and remove a compiled package. OpenEmbedded tools use these recipes to fetch and patch source code, compile and link binaries, produce binary packages (ipk, deb, rpm), and create bootable images.Historically, OpenEmbedded's collection of recipes were stored in a single repository, and the metadata was structured in a form now called "OpenEmbedded-Classic". By 2010, it had become increasingly difficult to manage the ever-growing number of recipes. To resolve this, recipe metadata was split into multiple layers. The lowest layer, which includes platform-independent and distribution-independent metadata is called "OpenEmbedded-Core". Architecture-specific, application-specific and distribution-dependent instructions are applied in appropriate target support layers that can override or complement the instructions from lower layers. Additionally, changes to the recipes at the core layer are now managed with a pull model: instead of committing their changes directly to the repository (as was previously the case), developers now send their patches to the mailing list. The patches, if approved, are then merged (pulled) by a maintainer.The OpenEmbedded framework can be installed and automatically updated via Git.

OpenFeint

OpenEMIS

OpenL Tablets BRMS

OpenIL

OpenLink Virtuoso

OpenGeo

The OpenGL Extension Wrangler Library (GLEW) is a cross-platform C/C++ library that helps in querying and loading OpenGL extensions. GLEW provides efficient run-time mechanisms for determining which OpenGL extensions are supported on the target platform. All OpenGL extensions are exposed in a single header file, which is machine-generated from the official extension list.

OpenForum

OpenLinux Workstation

OpenLazlo

OpenGL Shader Builder

OpenLinux

OpenDOAR: Directory of Open Access Repositories is a UK-based website that lists academic open access repositories. It is searchable by locale, content and other measures. The service does not require complete repository details and does not search repositories' metadata.OpenDOAR is maintained by the University of Nottingham under the SHERPA umbrella of services and was developed in collaboration with Lund University. The project is funded by the Open Science Institute, Jisc, the Consortium of Research Libraries (CURL) and SPARC Europe.As of 2015, OpenDOAR and the UK-based Registry of Open Access Repositories (ROAR) "are considered the two leading open access directories worldwide. ROAR is the larger directory and allows direct submissions to the directory. OpenDOAR controls submission of materials and is dependent on the discretion of its staff. OpenDOAR requires open access of scholarly publications; whereas ROAR allows other types of materials to be included. ROAR allows filtering by country, type of repository, and sorting by repository name."

OpenIRIS is the open source version of IRIS, a semantic desktop that enables users to create a "personal map" across their office-related information objects. The name IRIS is an acronym for "Integrate. Relate. Infer. Share."IRIS includes a machine-learning platform to help automate this process.

OpenGl

OpenGl shading Language

OpenDocument/Specification

OpenGL versus DirectX

OpenFX (API)

OpenGov (software company)

OpenContent

OpenGL Performer, formerly known as IRIS Performer and commonly referred to simply as Performer, is a commercial library of utility code built on top of OpenGL for the purpose of enabling hard real-time visual simulation applications. OpenGL Performer was developed by SGI which continues to maintain and enhance it. OpenGL Performer is available for IRIX, Linux, and several versions of Microsoft Windows. Both ANSI C and C++ bindings are available.

OpenLinux Standard 1.1

OpenEMR

OpenDOS 7.01.04

OpenDocumentFormat

OpenDesktop.org

OpenLinux Workstation 3.1

OpenKeychain

OpenHPSDR

OpenLTE

The OpenDisc project offered a selection of high quality open source software on a disc for Microsoft Windows users.

OpenElec

OpenInsight is a database application development tool from Revelation Software. It was first released in 1992; the current version is 10.0.1, released in March of 2018.OpenInsight is a windows-based development tool. It contains its own database which is a type of post-relational database known as a MultiValue database. OpenInsight contains tools for creating database applications that can run on Windows workstations, Windows, Linux, and Novell networks, and browser-based applications.

OpenLP

OpenDOS 7.01.06

OpenIRIS

OpenGenera

The OpenDisc project offered a selection of high quality open source software on a disc for Microsoft Windows users. The aims of the project were "to provide a free alternative to costly software, with equal or often better quality equivalents to proprietary, shareware or freeware software for Microsoft Windows", and "to educate users of Linux as an operating system for home, business and educational use".The project was created in September 2007 by former OpenCD project lead Chris Gray, who cited numerous difficulties which he believed were negatively affecting the progress of the Canonical-sponsored project. As of 27 September 2007, the OpenCD project is no longer under active development (the former OpenCD project was replaced by OpenDisc). The last updates to the OpenDisc project seem to have been in September 2012.

OpenInsight

OpenGIS

OpenLDAP is a free, open source implementation of the Lightweight Directory Access Protocol (LDAP) developed by the OpenLDAP Project. It is released under its own BSD-style license called the OpenLDAP Public License.LDAP is a platform-independent protocol. Several common Linux distributions include OpenLDAP Software for LDAP support. The software also runs on BSD-variants, as well as AIX, Android, HP-UX, macOS, Solaris, Microsoft Windows (NT and derivatives, e.g. 2000, XP, Vista, Windows 7, etc.), and z/OS.

OpenHub

OpenLinux 1.0

OpenLearn is an educational website. It is the UK's Open University's contribution to the Open educational resources (OER) project and the home of all free, open learning from The Open University. The original project was part-funded by the William and Flora Hewlett Foundation.OpenLearn is a member of the OpenCourseWare Consortium (OCWC).

OpenDFS

OpenGraphics

The OpenGL Extension Wrangler Library (GLEW) is a cross-platform C/C++ library that helps in querying and loading OpenGL extensions. GLEW provides efficient run-time mechanisms for determining which OpenGL extensions are supported on the target platform. All OpenGL extensions are exposed in a single header file, which is machine-generated from the official extension list. GLEW is available for a variety of operating systems, including Windows, Linux, Mac OS X, FreeBSD, IRIX, and Solaris.GLEW is distributed under modified BSD licenses, and the header file generator is under the GNU GPL.GLEW 2.1.0 added support for OpenGL 4.6.The OpenGL rendering path of the GTK+ Scene Graph Kit uses libepoxy instead of GLEW.

OpenConf (software)

OpenDocument Foundation

OpenJMS is one of the major providers of Java Message Service API, which implements Sun Microsystems' Java Message Service API 1.1 Specification. The current release is OpenJMS 0.7.7-beta-1.Java Message Service is an asynchronous communication mechanism in the distributed system field. It is very helpful in the situation where the distributed components are loosely coupled. Another popular distributed communication technology is Remote Method Invocation (RMI), which is tightly coupled and requires an application to know a remote application's methods.One benefit of OpenJMS is that it is vendor neutral. Because the Java JMS specifications do not specify a wire protocol, each vendor's JMS implementation is distinct and not interoperable with others. Since JMS's are normally released as part of an application server provider this makes the implementation of a JMS vendor specific to that application server. OpenJMS is not dependent on any given application server and therefore can be a common interface between users of different vendors. Users of various application servers can agree to use the common OpenJMS implementation for their interoperability layers.

OpenDS

OpenLB is an object-oriented implementation of the Lattice Boltzmann methods (LBM). It is the first implementation of a generic platform for LBM programming, which is shared with the open source community (GPLv2).

OpenElement

OpenDRIVE (secification)

OpenCroquet

OpenEdition

OpenFL is a free and open-source software framework and platform for the creation of multi-platform applications and video games.

OpenEI

OpenKore

OpenLife Grid

OpenEdge Advanced Business Language, or OpenEdge ABL for short, is a business application development language created and maintained by Progress Software Corporation (PSC). The language, typically classified as a fourth-generation programming language, uses an English-like syntax to simplify software development.
OpenEdge Advanced Business Language

OpenDocument software comparison

OpenELEC

OpenGL++

OpenEmbedded is a build automation framework and cross-compile environment used to create Linux distributions for embedded devices. The OpenEmbedded framework is developed by the OpenEmbedded community, which was formally established in 2003.

OpenERP

OpenDocument Software

OpenLearning is a for-profit educational technology institution based in Australia that offers a social online learning platform that can deliver massive open online courses (MOOCs).OpenLearning has worked with the University of New South Wales and Taylor's University to deliver the first MOOCs in Australia and Malaysia respectively.In December 2013, OpenLearning launched a cloud based software product for companies to create private educational portals on its platform.In February 2015, OpenLearning raised $1.7 million in funding led by angel investor Clive Mayhew.

Open Energy Information

OpenGL ARB

OpenLaszlo

OpenDocument)

OpenDocument adoption

Open Game Art is a media repository intended for use with free software game projects.Its purpose is to allow developers to easily replace programmer art with high-quality, appropriately licensed artwork. It accepts both 2D and 3D art, as well as sound effects and music, unlike similar projects such as ccMixter, which only deals with audio samples and songs, and The Freesound Project, which limits itself solely to samples.

OpenDivX

OpenCompanies

OpenJFX

OpenLB

OpenDisc

OpenForum Europe (OFE) is a European open source software advocacy group.

OpenEdge Database

The OpenGL Utility Toolkit (GLUT) is a library of utilities for OpenGL programs, which primarily perform system-level I/O with the host operating system. Functions performed include window definition, window control, and monitoring of keyboard and mouse input. Routines for drawing a number of geometric primitives (both in solid and wireframe mode) are also provided, including cubes, spheres and the Utah teapot.

openFIRST is an integrated set of modules which may be used together to create or enhance a web site. It is directed towards teams participating in the FIRST competition. The software is written and maintained by a group of students that are members of FIRST teams across the world. The code and mailing lists are hosted by SourceForge.

OpenLinux Base 1.1

GLee

OpenId

OpenELEC (short for Open Embedded Linux Entertainment Center) is a Linux distribution designed for home theater PCs and based on the Kodi (formerly XBMC) media player.OpenELEC applies the "just enough operating system" principle. It is designed to consume relatively few resources and to boot quickly from flash memory. OpenELEC disk images for the Raspberry Pi series and Freescale i.MX6 based devices are also available.The OpenELEC team released OpenELEC 4.0 on 5 May 2014, and this version features updated XBMC 13.0 with further updated important parts of the operating system as well as the Linux kernel updated to version 3.14 and additional device drivers. OpenELEC 4.0 also switched its init system to systemd.

OpenLibrary.org

OpenLearning

OpenDDS

OpenGL++ was a graphics library written in C++ that supported object-oriented data structures on top of the OpenGL 3D graphics system. The project started as the result of a partnership between SGI, IBM and Intel, and later, Digital Equipment Corporation. It was intended to provide a higher level API than the "bare metal" support of OpenGL, as well as being an implementation for Java3D.

OpenGL Utility Toolkit

OpenGL Performer

OpenCores

OpenDOS 7.01.08

OpenConf is an abstract management and peer-review web application used extensively by conferences and journals across a wide set of industries.

OpenGEX

OpenDDS (disambiguation)

OpenDocument Standardization

OpenEMR is a medical practice management software which also supports Electronic Medical Records (EMR).

OpenGLAM

OpenGL Shader Language

OpenGL 2

OpenEJB

OpenLinux Standard

OpenCodecs

OpenLMI (abbreviated from Open Linux Management Infrastructure) provides a common management infrastructure for Linux systems. Available operations include configuration of various operating system parameters and services, hardware components configuration, and monitoring of system resources.

OpenIDM

OpenLinux 1.3

OpenIDM is an identity management system written in the Java programming language. The old OpenIDM source code is available under the Common Development and Distribution License (CDDL). OpenIDM is designed with flexibility in mind, leverages JavaScript as default scripting language to define business rules during provisioning. All capabilities of OpenIDM exposes RESTful interfaces. As an integration layer, OpenIDM leverages the Identity Connectors (adopted by ForgeRock as OpenICF) and has a set of default connectors.

OpenLaszlo is a discontinued open source platform for the development and delivery of rich Internet applications. It is released under the Open Source Initiative certified Common Public License (CPL).The OpenLaszlo platform consists of the LZX programming language and the OpenLaszlo Server.LZX is an Extensible Markup Language (XML) and JavaScript description language similar in spirit to XUL, MXML, and Extensible Application Markup Language (XAML). LZX enables a declarative, text-based development process that supports rapid prototyping and software development best practices. It is designed to be familiar to traditional web application developers who are familiar with HTML and JavaScript.OpenLaszlo Server is a Java servlet that compiles LZX applications into executable binaries for targeted run-time environments.

OpenFt

OpenDOS 7.01.01

OpenDesktop (disambiguation)

OpenLinux Lite

OpenDocument standardization process

OpenJava

OpenCourseWare Consortium

OpenClassrooms is an online education platform for vocational training, providing courses in IT, technology, entrepreneurship, and digital skills.Courses are conducted fully online, through a mix of video resources, online reading, real-life projects and individual mentoring sessions.Founded in 2013 by Pierre Dubuc and Mathieu Nebra, OpenClassrooms now has 2.5 million users worldwide and offers courses in English, French and Spanish.

OpenHAN

OpenEmbedded

OpenFormula

OpenComRTOS

OpenJMS

OpenLinux 2.2

OpenClonk is a free and open-source 2D action game in which the player controls clonks, small but witty and nimble humanoid beings. It is mainly about mining, settling and fast-paced melees and features tactical gameplay elements. The game has been compared and described as mixture of Worms, The Settlers, Lemmings and Minecraft.

The OpenGL Architecture Review Board (ARB) is an industry consortium that governed the OpenGL specification. It was formed in 1992, and defined the conformance tests, approved the OpenGL specification and advanced the standard. On July 31, 2006, it was announced that the ARB voted to transfer control of the OpenGL specification to Khronos Group.Voting members included 3Dlabs, Apple, ATI, Dell, IBM, Intel, Nvidia, SGI and Sun Microsystems, plus other contributing members.

OpenImageIO

OpenLaszlo is a discontinued open source platform for the development and delivery of rich Internet applications. It is released under the Open Source Initiative certified Common Public License (CPL).The OpenLaszlo platform consists of the LZX programming language and the OpenLaszlo Server.LZX is an Extensible Markup Language (XML) and JavaScript description language similar in spirit to XUL, MXML, and Extensible Application Markup Language (XAML).

OpenGate

OpenCompositing

OpenFrame is a mainframe rehosting solution developed by TmaxSoft that aims to help customers move existing mainframe assets to the cloud quickly and with minimal risk. It replaces legacy CICS/IMS/JES mainframe engines and shifts business applications written in legacy code like COBOL and PL/I to Linux. This allows reduced licensing costs compared to the mainframe.It also includes a test tool which helps users determine if the migration will preserve functionality without additional adjustments.The current version of OpenFrame is 7.0, which was first released in Japan in September, 2015. The previous version, OpenFrame 6.0 was released in the U.S. market in 2009.

The OpenDataPlane (ODP) is an open-source project which defines application programming interfaces (APIs) for the networking data plane.Networking by functionality can be defined as:Data plane refers to all the functions and processes that forward packets/frames from one interface to another.Control plane refers to all the functions and processes that determine which path to use.

OpenGPU

OpenIllusionist

OpenG

OpenFeint/ Gree

OpenLinkVirtuoso

OpenGL2

OpenGL Extension Wrangler Library

OpenLinux 2.4

OpenComal

The OpenDocument Foundation, Inc. (not to be confused with The Document Foundation) was an organization set up in 2002 by Sam Hiser and Paul "Buck" Martin (real name Paul E. Merrell) to promote the use of open standards-based XML/RDF document formats for desktop computer use. Many members of the foundation were involved in the development of OpenDocument, first in the OASIS Office XML Format TC (Technical Committee) and later in the OASIS Open Document Format TC with up to four members of the TC representing the OpenDocument foundation in the TC.In October 2007, the OpenDocument Foundation controversially switched its support from OpenDocument to the World Wide Web Consortium (W3C)'s Compound Document Format (CDF). The case was unfortunate since the name of the Foundation suggested for the uninvolved reader that they were deeply connected to the format, or originated it, and the change meant an important supporter to get dissatisfied with the results; while in reality it only meant that the remaining few persons behind the Foundation had changed their minds.However, Chris Lilley of the W3C later explained to Andy Updegrove that CDF is not intended as an office format and is not a suitable replacement for the OpenDocument format. None of the three remaining members of the foundation are members of the W3C or the CDF working group. Andy Updegrove theorised that the foundation had "decided to turn out the lights" and were simply attacking those that had rejected their proposals to the OASIS TC.As of November 11, 2007, the official website has been shut down, probably marking the end of the OpenDocument Foundation.

The OpenHAN standards for home networks (sometimes called home grids) was promoted by groups such as openAMI and UtilityAMI. Both efforts aim to standardize powerline networking interoperation from a utility point of view and ensure reliable communications co-extant with AC power outlets.Both utilities and vendors of home control have promoted such standards aggressively . The openHAN label usually denotes standards favored by the utilities, not other service providers.

OpenKeychain is a free and open-source mobile app for the Android operating system that provides strong, user-based encryption which is compatible with the OpenPGP standard. This allows users to encrypt, decrypt, sign, and verify signatures for text, emails, and files. The app allows the user to store the public keys of other users with whom they interact, and to encrypt files such that only a specified user can decrypt them. In the same manner, if a file is received from another user and its public keys are saved, the receiver can verify the authenticity of that file and decrypt it if necessary.

OpenIT

OpenGroup

OpenLinux Base

OpenEdge Advanced Business Language (ABL)

The OpenHPSDR (High Performance Software Defined Radio) project dates from 2005 when Phil Covington, Phil Harman, and Bill Tracey combined their separate projects to form the HPSDR group. It is built around a modular concept which encourages experimentation with new techniques and devices (e.g. SDR, Envelope Elimination and Restoration) without the need to replace the entire set of boards. The project has expanded from the original group, and several additional people have been involved in recent HPSDR module designs.The core modules of the project are the Atlas passive backplane, the Ozy interface which provides a USB 2.0 data channel between the HPSDR system and the host PC, and the Mercury and Penelope receiver and exciter boards, which use high speed ADCs and DACs for direct conversion of received or transmitted signals in the DC to 55 MHz frequency range.Mercury has attracted wide interest within the HPSDR community as a general-coverage, high performance, HF receiver. It uses a 16-bit 135MSPS analog-to-digital converter that provides performance over the range 0 to 55 MHz comparable to that of a conventional analog HF radio. The receiver will also operate in the VHF and UHF range using either mixer image or alias responses. The host computer uses DSP techniques to process the digital bitstream it receives from the HPSDR system. Currently, the HPSDR hardware has been interfaced with the Flex-Radio PowerSDR Windows-based software, which is licensed under the GPL.As of February, 2011, the following HPSDR modules have been released:Atlas backplaneMagister control boardJanus I/Q interface boardMercury Direct Down-conversion receiverLPU linear power supplyPandora enclosureExcalibur frequency reference boardPennyWhistle 20 watt RF power amplifierHercules 100 watt RF power amplifierMetis 1Gigbit (1000T) PC interface boardOther modules nearing release include:Alex RX/TX filter bankReplaced by newer modules:Ozy USB control board (replaced by Magister)Penelope Direct Up-conversion exciter (replaced by PennyLane, not provided by TAPR but by new commercial organisation)In cooperation with the HPSDR group, TAPR has provided (or will provide) all the modules listed above. Most have been made available as either fully assembled units or as bare circuit boards; a few are available as kits of parts.Several other modules are under development. A web site and Wiki provide further information about the HPSDR projects. .The HPSDR project is open-source for software and uses a combination of licenses for the hardware.

OpenJPA

OpenLink is an open-source initiative originally introduced to the world by Texas Instruments. The OpenLink community provides open, comprehensive access to Texas Instruments' wireless connectivity technology drivers. As a one-stop-shop for resources, support and product information, this community provides a centralized location to make wireless connectivity-related designs more efficient, timely and distinctive.

OpenFirmware

OpenDOS 7.01.03

OpenCola

OpenLDI

OpenCores is an open source hardware community developing digital open source hardware through electronic design automation, with a similar ethos to the free software movement. OpenCores hopes to eliminate redundant design work and slash development costs. A number of companies have been reported as adopting OpenCores IP in chips, or as adjuncts to EDA tools.

OpenLDI is a high-bandwidth digital-video interface standard for connecting graphics/video processors to flat panel LCD monitors. Even though the promoter’s group originally designed it for the desktop computer to monitor application, the majority of applications today are industrial display connections.

OpenFT

OpenLinux Server 3.1

OpenEpi is a free, web-based, open source, operating system-independent series of programs for use in epidemiology, biostatistics, public health, and medicine, providing a number of epidemiologic and statistical tools for summary data. OpenEpi was developed in JavaScript and HTML, and can be run in modern web browsers. The program can be run from the OpenEpi website or downloaded and run without a web connection.

OpenGALEN

OpenGL ES 3.0

OpenCv

OpenLibrary

OpenGroupware.org

OpenELEC (short for Open Embedded Linux Entertainment Center) is a Linux distribution designed for home theater PCs and based on the Kodi (formerly XBMC) media player.OpenELEC applies the "just enough operating system" principle. It is designed to consume relatively few resources and to boot quickly from flash memory.

OpenConf is an abstract management and peer-review web application used extensively by conferences and journals across a wide set of industries. The software is available both for download and cloud-based, with translations in over a dozen languages for author and reviewer interfaces.Originally developed for use by conferences only, OpenConf has been adapted for use by journals, workshops, symposia, grants and competitions, with thousands of installations in over one hundred countries.OpenConf is available in multiple editions including Community, Plus and Pro. The Community Edition is freely available for users able to support themselves without external assistance, and as a base application for third-party research.Developed using PHP and a MySQL database backend, the downloaded version of OpenConf may be run in various platforms, including Linux, Mac OS X, and Windows. An HTML5 compliant mobile app is also included for use by event participants accessing an event's program.

OpenGoo

OpenGL Multipipe is the default SGI solution for handling parallel rendering on a single desktop using multiple displays on Irix and Linux. It first appeared in Irix 6.5.10 as a solution for creating desktops on SGI Onyx Visualization Systems (their so-called Reality Centers) which took advantage of multiple Raster/Geometry Managers in multiple pipelines.

OpenDRIVE

OpenGLES

OpenEdition.org

OpenContent License

OpenIKED is a free, permissively-licensed Internet Key Exchange (IKEv2) daemon developed as part of the OpenBSD operating system.

OpenLMI (abbreviated from Open Linux Management Infrastructure) provides a common management infrastructure for Linux systems. Available operations include configuration of various operating system parameters and services, hardware components configuration, and monitoring of system resources. Services provided by OpenLMI can be accessed both locally and remotely, using multiple programming languages and standardized APIs.Project's source code is distributed under the GNU Lesser General Public License (LGPL) and Simplified BSD License.

OpenID Connect

OpenEXR

OpenLayers is an open source (provided under the 2-clause BSD License) JavaScript library for displaying map data in web browsers as slippy maps. It provides an API for building rich web-based geographic applications similar to Google Maps and Bing Maps.

OpenID providers

OpenDataSoft is a private software company specialized in transforming structured data into API and visualizations. Founded in 2011, OpenDataSoft targets non-technical users who wish to share and visualize data related to various topics (government data, economy, health, education, culture, transport, energy and environment).OpenDataSoft allows restricted and open sharing ecosystems like open data portals.

OpenGL vs DirectX

OpenEMIS, or Open Education Management Information System (EMIS), is an Education Management Information System for education sector. Its main purpose is to collect, analyze, and report data related to the management of educational activities. Initially conceived by UNESCO, OpenEMIS serves as a response to Member States’ need in the area of tools for educational strategic planning.

OpenEd

The OpenIllusionist Project is a computer program for the rapid development of augmented reality applications. OpenIllusionist provides software libraries to make easier the tasks of generating these images, performing the necessary computer vision tasks to interpret the user input, modelling the behaviour of any of the virtual objects (or 'agents'), and threading all of the above to provide the illusion of reality.

OpenLinux Standard 1.0

OpenClonk

OpenLayers

OpenLink

OpenEMIS, or Open Education Management Information System (EMIS), is an Education Management Information System for education sector. Its main purpose is to collect, analyze, and report data related to the management of educational activities. Initially conceived by UNESCO, OpenEMIS serves as a response to Member States’ need in the area of tools for educational strategic planning. ‘Open’ refers to the software being both open source under the GNU GPL and available royalty-free to Member states of UNESCO.

The OpenGL Easy Extension library (GLee) automatically links OpenGL extensions and core functions at initialisation time. This saves programmers the effort of manually linking every required extension.GLee is compatible with Windows, Mac OS X, Linux and FreeBSD platforms. It is also likely to be compatible with other Unix-like systems which use X Window.GLee is distributed under the Simplified BSD license, excluding the generator GLeeGen.
OpenGL Easy Extension library

OpenCores is an open source hardware community developing digital open source hardware through electronic design automation, with a similar ethos to the free software movement. OpenCores hopes to eliminate redundant design work and slash development costs. A number of companies have been reported as adopting OpenCores IP in chips, or as adjuncts to EDA tools. OpenCores is also cited from time to time in the electronics press as an example of open source in the electronics hardware community.OpenCores has always been a commercially owned organization. In 2015, the core active users of OpenCores established the independent Free and Open Source Silicon Foundation (FOSSi), and registered the libreCores.org website as the basis for all future development, independent of commercial control.

OpenFabrics Alliance

OpenGL Multipipe is the default SGI solution for handling parallel rendering on a single desktop using multiple displays on Irix and Linux. It first appeared in Irix 6.5.10 as a solution for creating desktops on SGI Onyx Visualization Systems (their so-called Reality Centers) which took advantage of multiple Raster/Geometry Managers in multiple pipelines. The package was originally composed of Xinerama, a Xinerama aware version of 4DWM (called omp4Dwm) and a backend server to handle and distribute all OpenGL threads to the various physical pipes called Transparent OpenGL (or tgl).In SGI parlance, a pipe (see Graphics pipeline) is akin to a PCI Video Card connected to other cards that handle Geometry and/or Rasterization in a "pipeline" (hence the name and the relevant nature of OpenGL), somewhat similar to 3Dfx's Voodoo Graphics card (though many considered the latter hackish and not at all a true pipe). Nowadays a pipe is solely on a single board and on a single chip (GPU). More to the point, a single SGI pipeline (e.g. InfiniteReality4) could be configured to have up to 8 Video Outputs, each with its own Raster Manager (or 4 with additional Texture memory and a Geometry manager). SGI's Implementation of Xinerama would transparently handle OpenGL on all display outputs (including multiple pipes), but usually offloaded all OpenGL calls to a blanket OpenGL API called transparent OpenGL(like running Xdmx without Chromium).Programming for a single display on multiple pipes was always possible in OpenGL using threads (and subsequently in Open Inventor and OpenGL Performer), making them "multipipe aware", but this proved challenging for scientists and architects who cringed at C/C++ multithreading. SGI decided to lighten the burden by developing a package that would encompass a halfway optimized solution for applications programmed for only one pipe via Multipipe.OpenGL Multipipe was part one of a three tiered approach to escalate applications towards multipipe awareness. The second part was Multipipe SDK which provided a simple set of libraries that made an OpenGL application multipipe aware. The third was moving on to the multipipe aware OpenGL Performer. The latest versions of Multipipe include Xdmx as a better suited solution for multiple displays. Ultimately this solution would be superseded by working Xdmx, Xinerama and Chromium in tandem on linux graphics clusters. Programming multiple pipes in OpenGL would be facilitated by Equalizer or by a variety of SceneGraph Libraries.

OpenDOS 7.01

OpenCourseWare in Japan

OpenDarwin.org

OpenLMI

The OpenForum was a six-hundred-delegate, three-day conference held in the Cape Town International Convention Centre (CTICC) in Cape Town, South Africa, in May 2012. The aim of the OpenForum was to bring a variety of thought leaders and activists to discuss the inherent paradoxes of societal inequality in Africa focusing on the three interlinking areas of money, power and sex.

The OpenGov Foundation is a non-partisan, non-profit organization that bridges the gap between citizens and government with modern technology, data and design thinking. The organization conducts user-centered research inside legislatures like the United States Congress, develops software for those who serve in government, and helps governments create policies and rules that support openness and effective engagement with the public. It was co-founded by Congressman Darrell Issa and Seamus Kraft in 2012, and it is funded primarily by the Democracy Fund, Twilio.org, Todd Park and Matt Cutts. In the past, The OpenGov Foundation has been funded by the Knight Foundation, Shuttleworth Foundation, the Rita Allen Foundation and the Consumer Technology Association. The organization is based in Washington, D.C and has offices in Philadelphia, PA and Wichita, KS.The OpenGov Foundation grew out of the 2011-2012 protests against SOPA and PIPA, creating a platform called Madison that allowed the public to directly and effectively engage alongside Members of Congress in the legislative process. It received a $200,000 grant from the Knight Foundation in 2013, an additional $750,000 from Knight in 2014, and over $700,000 from the Shuttleworth Foundation since 2014. In 2017, The OpenGov Foundation received $150,000 from the Twilio.org Impact Fund and $100,000 from Todd Park.In May 2017, The OpenGov Foundation released the fourth and last version of the Madison open source legislative engagement software. In June 2017, it began development of Article One, a cloud-based voice and SMS tool that supports meaningful engagement at scale between citizens and their Members of Congress.

OpenDesktop

openElement is a freeware website design and authoring application published by Element Technologie. The software is powered by Chromium, the Google Chrome engine, and runs on Microsoft Windows (XP, Vista, 7, and 8). The publisher says it will soon be available for Mac and Linux.The current stable version is 1.53.

OpenGL for Embedded Systems

The OpenGL Utility Toolkit (GLUT) is a library of utilities for OpenGL programs, which primarily perform system-level I/O with the host operating system. Functions performed include window definition, window control, and monitoring of keyboard and mouse input. Routines for drawing a number of geometric primitives (both in solid and wireframe mode) are also provided, including cubes, spheres and the Utah teapot. GLUT also has some limited support for creating pop-up menus.GLUT was written by Mark J. Kilgard, author of OpenGL Programming for the X Window System and The Cg Tutorial: The Definitive Guide to Programmable Real-Time Graphics, while he was working for Silicon Graphics Inc.The two aims of GLUT are to allow the creation of rather portable code between operating systems (GLUT is cross-platform) and to make learning OpenGL easier. Getting started with OpenGL programming while using GLUT often takes only a few lines of code and does not require knowledge of operating system–specific windowing APIs.All GLUT functions start with the glut prefix (for example, glutPostRedisplay marks the current window as needing to be redrawn).

OpenFlight

OpenDNSSec

OpenInk

OpenEHR

OpenFog

OpenGameArt

OpenLDAP

OpenFlow is a communications protocol that gives access to the forwarding plane of a network switch or router over the network.

OpenGL Profiler

OpenFlight (or .flt) is a 3d geometry model file format originally developed by Software Systems Inc. for its MultiGen real-time 3d modeling package in 1988. Originally called Flight, the format was designed as a nonproprietary 3d model format for use by real-time 3d visual simulation image generators. The format was later renamed to OpenFlight to denote its nonproprietary image generation (IG) usage. The MultiGen modeling package (known now as Creator) and the OpenFlight format were rapidly adopted by the early commercial flight simulation industry in the later 80's and early 90's. NASA Ames was the first customer for the MultiGen modeling package.The early advantage OpenFlight held over many 3d geometry model file formats (.obj, .dxf, .3ds) was its specific real-time 3d graphics industry design. This means that the format is polygon based (rather than NURB surfaces), and provides a real-time tree structure essential for real-time IG systems. Most early graphics file formats, such as Wavefront Technologies, or Alias Systems Corporation, tried to focus more on visual aesthetics for non-real-time based rendering graphics packages.The OpenFlight file format is still widely used today in the high end real-time visual simulation industry as the standard interchange format between different IG systems, and is currently administrated by Presagis.

The OpenGov Foundation is a non-partisan, non-profit organization that bridges the gap between citizens and government with modern technology, data and design thinking. The organization conducts user-centered research inside legislatures like the United States Congress, develops software for those who serve in government, and helps governments create policies and rules that support openness and effective engagement with the public.

OpenGL User Interface Library (GLUI) is a C++ user interface library based on the OpenGL Utility Toolkit (GLUT) which provides controls such as buttons, checkboxes, radio buttons, and spinners to OpenGL applications. It is window- and operating system independent, relying on GLUT to handle all system-dependent issues, such as window and mouse management.It lacks the features of a more full-fledged GUI toolkit such as Qt, wxWidgets or FLTK, but it has a very small footprint and is extremely easy to use. A research or demonstration program that originally only uses GLUT can be given a useful control panel using GLUI in a short time, even by someone new to the toolkit.It was first written by Paul Rademacher to help him with his academic work. It is now maintained by Nigel Stewart.Weaknesses include the lack of a properly functioning file chooser (perhaps the most frustrating omission) and mediocre responsiveness.

OpenIDM is an identity management system written in the Java programming language. The old OpenIDM source code is available under the Common Development and Distribution License (CDDL). OpenIDM is designed with flexibility in mind, leverages JavaScript as default scripting language to define business rules during provisioning. All capabilities of OpenIDM exposes RESTful interfaces.

openEHR is an open standard specification in health informatics that describes the management and storage, retrieval and exchange of health data in electronic health records (EHRs). In openEHR, all health data for a person is stored in a "one lifetime", vendor-independent, person-centred EHR. The openEHR specifications include an EHR Extract specification but are otherwise not primarily concerned with the exchange of data between EHR-systems as this is the focus of other standards such as EN 13606 and HL7.The openEHR specifications are maintained by the openEHR Foundation, a not for profit foundation supporting the open research, development, and implementation of openEHR EHRs. The specifications are based on a combination of 15 years of European and Australian research and development into EHRs and new paradigms, including what has become known as the archetype methodology for specification of content.The openEHR specifications include information and service models for the EHR, demographics, clinical workflow and archetypes. They are designed to be the basis of a medico-legally sound, distributed, versioned EHR infrastructure.

OpenGL vs. Direct3D

OpenDOS

OpenIngres

OpenCube Technologies

OpenGL++ was a graphics library written in C++ that supported object-oriented data structures on top of the OpenGL 3D graphics system. The project started as the result of a partnership between SGI, IBM and Intel, and later, Digital Equipment Corporation. It was intended to provide a higher level API than the "bare metal" support of OpenGL, as well as being an implementation for Java3D. Work on OpenGL++ ended when SGI decided to partner with Microsoft instead, leading to the Fahrenheit project, which also died.

OpenFL

OpenFabrics Enterprise Distribution

The openGear Terminal Equipment Platform is a modular platform for terminal equipment used for video, audio and data signal processing and distribution in the broadcast and production industries. Ross Video is the creator of the openGear platform and licenses it to other companies who then make openGear compliant signal processing cards.

OpenDRIVE (specification)

OpenEXR is a high dynamic range raster file format, released as an open standard along with a set of software tools created by Industrial Light and Magic (ILM), under a free software license similar to the BSD license.It is notable for supporting multiple channels of potentially different pixel sizes, including 64-, 32- and 16-bit floating point values, as well as various compression techniques which include lossless and lossy compression algorithms. It also has arbitrary channels and encodes multiple points of view such as left- and right-camera images.

OpenJustice

OpenEdge

OpenFlow

OpenEpi is a free, web-based, open source, operating system-independent series of programs for use in epidemiology, biostatistics, public health, and medicine, providing a number of epidemiologic and statistical tools for summary data. OpenEpi was developed in JavaScript and HTML, and can be run in modern web browsers. The program can be run from the OpenEpi website or downloaded and run without a web connection. The source code and documentation is downloadable and freely available for use by other investigators. OpenEpi has been reviewed, both by media organizations and in research journals.The OpenEpi developers have had extensive experience in the development and testing of Epi Info, a program developed by the Centers for Disease Control and Prevention (CDC) and widely used around the world for data entry and analysis. OpenEpi was developed to perform analyses found in the DOS version of Epi Info modules StatCalc and EpiTable, to improve upon the types of analyses provided by these modules, and to provide a number of tools and calculations not currently available in Epi Info. It is the first step toward an entirely web-based set of epidemiologic software tools. OpenEpi can be thought of as an important companion to Epi Info and to other programs such as SAS, PSPP, SPSS, Stata, SYSTAT, Minitab, Epidata, and R (see the R programming language). Another functionally similar Windows-based program is Winpepi. See also list of statistical packages and comparison of statistical packages. Both OpenEpi and Epi Info were developed with the goal of providing tools for low and moderate resource areas of the world. The initial development of OpenEpi was supported by a grant from the Bill and Melinda Gates Foundation to Emory University.The types of calculations currently performed by OpenEpi include:Various confidence intervals for proportions, rates, standardized mortality ratio, mean, median, percentiles2x2 crude and stratified tables for count and rate dataMatched case-control analysisTest for trend with count dataIndependent t-test and one-way ANOVADiagnostic and screening test analyses with receiver operating characteristic (ROC) curvesSample size for proportions, cross-sectional surveys, unmatched case-control, cohort, randomized controlled trials, and comparison of two meansPower calculations for proportions (unmatched case-control, cross-sectional, cohort, randomized controlled trials) and for the comparison of two meansRandom number generatorFor epidemiologists and other health researchers, OpenEpi performs a number of calculations based on tables not found in most epidemiologic and statistical packages. For example, for a single 2x2 table, in addition to the results presented in other programs, OpenEpi provides estimates for:Etiologic or prevented fraction in the population and in exposed with confidence intervals, based on risk, odds, or rate dataThe cross-product and MLE odds ratio estimateMid-p exact p-values and confidence limits for the odds ratioCalculations of rate ratios and rate differences with confidence intervals and statistical tests.For stratified 2x2 tables with count data, OpenEpi provides:Mantel-Haenszel (MH) and precision-based estimates of the risk ratio and odds ratioPrecision-based adjusted risk differenceTests for interaction for the risk ratio, odds ratio, and risk differenceFour different confidence limit methods for the odds ratio.Similar to Epi Info, in a stratified analysis, both crude and adjusted estimates are provided so that the assessment of confounding can be made. With rate data, OpenEpi provides adjusted rate ratio’s and rate differences, and tests for interaction. Finally, with count data, OpenEpi also performs a test for trend, for both crude data and stratified data.In addition to being used to analyze data by health researchers, OpenEpi has been used as a training tool for teaching epidemiology to students at: Emory University, University of Massachusetts, University of Michigan, University of Minnesota, Morehouse College, Columbia University, University of Wisconsin, San Jose State University, University of Medicine and Dentistry of New Jersey, University of Washington, and elsewhere. This includes campus-based and distance learning courses. Because OpenEpi is easy to use, requires no programming experience, and can be run on the internet, students can use the program and focus on the interpretation of results. Users can run the program in English, French, Spanish, Portuguese or Italian.Comments and suggestions for improvements are welcomed and the developers respond to user queries. The developers encourage others to develop modules that could be added to OpenEpi and provide a developer’s tool at the website. Planned future development include improvements to existing modules, development of new modules, translation into other languages, and add the ability to cut and paste data and/or read data files.

OpenDocument Graphics

OpenGL User Interface Library (GLUI) is a C++ user interface library based on the OpenGL Utility Toolkit (GLUT) which provides controls such as buttons, checkboxes, radio buttons, and spinners to OpenGL applications.

OpenClassrooms is an online education platform for vocational training, providing courses in IT, technology, entrepreneurship, and digital skills.Courses are conducted fully online, through a mix of video resources, online reading, real-life projects and individual mentoring sessions.Founded in 2013 by Pierre Dubuc and Mathieu Nebra, OpenClassrooms now has 2.5 million users worldwide and offers courses in English, French and Spanish. The company’s mission is to ‘make education accessible’Students can choose to follow online courses in subjects ranging from Javascript to Product Management, or pursue internationally recognized degree programs.

OpenCourseWare (OCW) are course lessons created at universities and published for free via the Internet. OCW projects first appeared in the late 1990s, and after gaining traction in Europe and then the United States have become a worldwide means of delivering educational content.

OpenLDAP is a free, open source implementation of the Lightweight Directory Access Protocol (LDAP) developed by the OpenLDAP Project. It is released under its own BSD-style license called the OpenLDAP Public License.LDAP is a platform-independent protocol. Several common Linux distributions include OpenLDAP Software for LDAP support. The software also runs on BSD-variants, as well as AIX, Android, HP-UX, macOS, Solaris, Microsoft Windows (NT and derivatives, e.g.

OpenGLUT

OpenEdge Advance Business Language (ABL)

OpenIRIS is the open source version of IRIS, a semantic desktop that enables users to create a "personal map" across their office-related information objects. The name IRIS is an acronym for "Integrate. Relate. Infer. Share."IRIS includes a machine-learning platform to help automate this process. It provides "dashboard" views, contextual navigation, and relationship-based structure across an extensible suite of office applications, including a calendar, web and file browser, e-mail client, and instant messaging client.IRIS was built as part of SRI International's CALO project, a very large artificial intelligence funded by the Defense Advanced Research Projects Agency (DARPA) under its Personalized Assistant that Learns program.Integrate: IRIS harvests and unifies the data from multiple, independently developed applications such as email (Mozilla), web browser (Mozilla), file manager, calendar (OpenOffice), and Chat (XMPP).Relate: IRIS stores this data an ontology-based KB that supports rich representation and connection to the user's worklife. In IRIS, you can express things like: "this file, authored by this person, was presented at this meeting about this project".Infer: IRIS comes with a learning framework that makes it possible for online learning algorithms (e.g. clustering, classification, extraction, prioritization, association, summarization, various predictors) to plug-in and reason about the rich data and events presented to them. In addition to learning through observation of user activity, CALO's learning algorithms have access to interface mechanisms in IRIS where they can get feedback from the user.Share: The knowledge created in IRIS by the user and by CALO will eventually be made sharable with selected team members. Currently, the ability to share content across IRIS users is a future capability.

OpenKODE is a set of native APIs for handheld games and media applications providing a cross-platform abstraction layer for other media technologies such as OpenGL ES, OpenVG, OpenMAX AL and OpenSL ES. Besides of being an umbrella specification of the other APIs, OpenKODE also contains an API of its own, OpenKODE Core. OpenKODE Core defines POSIX-like functions to access operating system resources such as file access.OpenKODE is managed by the non-profit technology consortium Khronos Group.

OpenLearn

OpenKeychain is a free and open-source mobile app for the Android operating system that provides strong, user-based encryption which is compatible with the OpenPGP standard. This allows users to encrypt, decrypt, sign, and verify signatures for text, emails, and files. The app allows the user to store the public keys of other users with whom they interact, and to encrypt files such that only a specified user can decrypt them.

OpenEd is an online catalog of educational assessments, homework assignments, videos, games and lesson plans aligned to every Common Core standard and several other standards, and includes the only open source formative item bank. The site offers the ability for teachers to assign resources to their students online, letting students take assessments, do homework etc on their own computers or tablets. Assignments done online are graded automatically and presented to the teacher in a mastery chart. OpenEd's slogan mentions "assessment to instruction" meaning, formative assessments given on OpenEd can access OpenEd's large catalog on a per student basis to recommend the right resource to each student individually. The company has stated that functionality of searching the site and most of its resources are free and will continue to be free going forward. However, the company is also distributing premium content from publishers such as Pearson and Houghton Mifflin Harcourt to teachers for $9.95 per month.Currently 450,000 teachers or about 15% of all USA teachers are registered users. Recently, the company has been providing its resources with alignments to other tech companies. The API for finding standard and skill-aligned resources is used by ed tech leaders such as ACT (test), Pearson PLC, Pacific Metrics and many more.

OpenDocument Format Alliance

OpenGroupWare.org

OpenDWG

OpenFX

OpenLinux Base 1.2

OpenLeaks project

OpenLook

OpenLinux Lite 1.2

OpenGameArt.org

OpenGate is a communications platform designed to facilitate a fast development and deployment of robust wireless solutions, to be used as a M2M platform or as a mobile platform.OpenGate acts as a data gateway between remote devices and the applications that need to send and receive information to and from those devices.

OpenEdition MVS

OpenEye

OpenDocument specification

OpenLinux 1.1

OpenIB Alliance

OpenLDI is a high-bandwidth digital-video interface standard for connecting graphics/video processors to flat panel LCD monitors. Even though the promoter’s group originally designed it for the desktop computer to monitor application, the majority of applications today are industrial display connections. For example, displays in medical imaging, machine vision, and construction equipment use the OpenLDI chipsets.OpenLDI is based on the FPD-Link specification, which was the de facto standard for transferring graphics and video data through notebook computer hinges since the late 1990s. Both OpenLDI and FPD-Link use low-voltage differential signaling (LVDS) as the physical layer signaling, and the three terms have mistakenly been used synonymously. (FPD-Link and OpenLDI are largely compatible, beyond the physical-layer; specifying the same serial data-streams).The OpenLDI standard was promoted by National Semiconductor, Texas Instruments, Silicon Graphics (SGI) and others. OpenLDI wasn't used in many of the intended applications after losing the computer-to-monitor interconnect application to a competing standard, Digital Visual Interface (DVI).The SGI 1600SW was the only monitor produced in significant quantities with an OpenLDI connection, though it had minor differences from the final published standards. The 1600SW used a 36-pin MDR36 male connector with a pinout that differs from that of the 36-pin centronics-style connector in the OpenLDI standard.Sony produced some VAIO displays and laptops using the standard.(According to the SGI 1600SW entry, a few other displays were made by various manufacturers using the OpenLDI standard.)

OpenCongress

OpenFL is a free and open-source software framework and platform for the creation of multi-platform applications and video games. OpenFL applications can be written in Haxe, JavaScript (EcmaScript 5 or 6+), or TypeScript., and may be published as standalone applications for several targets including iOS, Android, HTML5(choice of Canvas, WebGL, SVG or DOM), Windows, macOS, Linux, WebAssembly, Flash, AIR, PlayStation 4, PlayStation 3, PlayStation Vita, Xbox One, Wii U, Tivo, Raspberry Pi, and Node.js.The most popular editors used for Haxe and OpenFL development are:Visual Studio Code (with plugin)HaxeDevelop (supports Code folding, code refactoring and interactive debugging)Sublime Text (with plugin)IntelliJ IDEA (with plugin)OpenFL contains Haxe ports of major graphical libraries such as Away3D, Starling, BabylonJS and DragonBones. Due to the multi-platform nature of OpenFL, such libraries usually run on multiple platforms such as HTML5, Adobe AIR and Android/iOS.More than 500 video games have been developed with OpenFL, including the BAFTA-award-winning game Papers, Please, Rymdkapsel, Lightbot and Madden NFL Mobile.

OpenEVSE

OpenForum Europe

OpenFOAM

OpenCxx

OpenGEU was a free computer operating system based upon the popular Ubuntu Linux distribution, which in turn is based on Debian GNU/Linux. OpenGEU combined the strengths and ease of use of GNOME desktop environment with the lightweight, and graphical eye candy features of the Enlightenment window manager into a unique and user-friendly desktop.