List of formerly proprietary software

Short description: None

This is a list of notable software packages which were published under a proprietary software license but later released as free and open-source software, or into the public domain.

In some cases, the company continues to publish proprietary releases alongside the non-proprietary version.

List of formerly proprietary and closed-source software  Title  | Original release  | Relicensed release  | Initial free relicense  | Notes

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3D Movie Maker | 1995  | 2022  | MIT | The source code and assets for entire program (minus fonts) was uploaded to GitHub on May 4, 2022, under the MIT License.[1][2][3][4]
Adobe Flex  | 2004  | 2007  | MPL-1.1 | Since renamed to Apache Flex and changed to Apache-2.0
AdvFS | 1990s  | 2008  | GPL-2.0-only | HP opened up AdvFS from Tru64 UNIX.
AOLserver |  | 1999  | GPL / modified MPL | [5]
Apache Derby | 1996  | 2004  | Apache-2.0 | Relational database management system originally called Cloudscape; released as free and open-source software by IBM in 2004 and donated to the Apache Software Foundation
Apache Wave | 2009  | 2009  | Apache-2.0 | Formerly Google Wave.[6]
Apus Game Engine | 2008  | 2020  | BSD-3-Clause | Released to the public by the developer after reaching a Patreon goal.[7] The source code for Astral Heroes (one of the games using the engine) was released to patrons.[8]
Astrolog | 1991  | 2015  | GPL-2.0-or-later / custom permissive  | Has always been freeware and open source, but had a custom attribution demanding permissive license.
Atom | 2014  | 2014  | MIT | [9]
BASIC Computer Games | 1973  | 2021  | Public-domain software (Unlicense)
BDS C Compiler | 1979  | 2002  | Public domain | Released by author
BitKeeper | 2000  | 2016  | Apache-2.0 |
Bitstream Vera (font)  |  | 2003  | custom | Through the efforts of Bitstream and the GNOME Foundation
Blades of Exile | 1997  | 2007  | CPL-1.0 | Relicensed to the GPL-2.0-only at some point between 14 May 2007 and 12 June 2007.
Blender | 1996  | 2003  | GPL-2.0-or-later |
BlitzBASIC (Blitz3D, BlitzPlus, BlitzMax)  | 2001  | 2014  | Zlib | BlitzPlus was released as Open Source on 28 April 2014 under the Zlib license on github.com.[10][11] Blitz3D follow on 3 August 2014.[12][13] BlitzMax was open sourced on 21 September 2015.[14]
BRender | 1995  | 2022  | MIT | Source code for 1997 and 1998 versions released under the MIT License on GitHub on May 3, 2022.[4] The source code for 3D Movie Maker, a computer program using the engine was also released under the same license.
C-Dogs | 1999  | 2002–2016  | Public-domain software/CC BY 3.0 | Source code released to the public on February 13, 2002, under a public-domain-equivalent license.[15] The graphics were re-licensed to the CC BY 3.0 license on April 13, 2016.[16]
Cafu Engine  | 2000  | 2009  | GPL-3.0-or-later | Originally released under the GPL-3.0-or-later license (with an option for a commercial license),[17] in 2016 was re-licensed under the MIT license.[18]
Catacomb | 1989  | 2014  | GPL-2.0-or-later | [19]
Catacomb II | 1991  | 2014  | GPL-2.0-or-later | [19]
Catacomb Abyss | 1992  | 2014  | GPL-2.0-or-later | [19]
Catacomb Armageddon | 1992  | 2014  | GPL-2.0-or-later | [19]
Catacomb 3D | 1991  | 2014  | GPL-2.0-or-later | [19]
C*Base | 1980s  | 2003  | GPL-2.0-or-later |
Cemu | 2015  | 2022  | MPL-2.0 | Source code released under the Mozilla Public License 2.0 on August 24, 2022.[20]
CDE | 1993  | 2012  | LGPL-2.0-or-later | [21][22]
ChakraCore  | 2009  | 2016  | MIT | On 13 January 2016 Microsoft released ChakraCore under the MIT license on GitHub.[23] ChakraCore is essentially the same as the Chakra engine that powers the Microsoft Edge browser, but with platform-agnostic bindings, i.e. without the specific interfaces utilised within the Windows Universal App platform.[24]
CMU Sphinx |  | 2000  | Custom BSD-style license  | [25][26]
CodeXL  |  | 2016  | MIT |
Coherent | 1980  | 2015  | BSD-3-Clause | [27]
CP/M family  | 1974  | 1997,[28][29][30] 2001,[31][32][33][34] 2014[35] |  | [28][29][30][31][32][33][34][35]
CuneiForm | 1993  | 2008  | BSD-3-Clause | Optical character recognition software
Dagor Engine | 2003  | 2023  | BSD-3-Clause | Gaijin Entertainment's in-house game engine was quietly released on GitHub under a BSD license in 2023;[36] this open-source release will be used as the base for VK's Nau Engine.[37]
Dink Smallwood | 1998  | 2003  | zlib-like  | Some game data (e.g. sounds) not released under a free license.[38]
DOS.MASTER  | end 1980s  | 2000  | public domain software  | DOS.MASTER is a program for Apple II computers which allows Apple DOS 3.3 programs to be placed on a hard drive or 3.5-inch floppy disk and run from ProDOS. Written by Glen Bredon as a commercial program during the late 1980s, it was released into the public domain by his family after the author's death.[39]
Duke Nukem 3D | 1996  | 2003  | GPL-2.0-or-later | Game code only, no data, no engine.
Etherpad | 2008  | 2009  | Apache-2.0 | Open sourced after being purchased by Google
Extensible Storage Engine | 1994  | 2021  | MIT | Formerly known as JET Blue
Falcon |  | 2007  | GPL | [40]
FAR Manager  | 1996  | 2007  | BSD-3-Clause | Version 2.0 released as open source.
File Manager (Windows) | 1990  | April 2018  | MIT | On 6 April 2018, Microsoft released binaries and the source code, licensed under the MIT license, for an improved version of File Manager able to be run on Windows 10.[41][42] This version included changes such as the ability to compile in modern versions of Visual Studio, the ability to compile as a 64-bit application, and numerous usability improvements.[42]
Fish Fillets | 1998  | 2002  | GPL-2.0-or-later |
Free Download Manager | 2003  | 2007  | GPL-3.0-only | Free since version 2.5[43]
FoundationDB | 2013  | 2018  | Apache-2.0 | Apple Inc. acquired the founding company in March 2015 and discontinued downloads of the software.[44] In April 2018, Apple open-sourced the database and resumed downloads.[45]
Game-Maker | 1991  | 2014  | MIT | After some consultation with the user base, on 12 July 2014 original coder Andy Stone released the Game-Maker 3.0 source code on GitHub, under the MIT license.[46]
GGPO | 2006  | 2019  | MIT | On 9 October 2019 Cannon announced on his Twitter account that GGPO was now open source and available under the MIT license.[47]
Ghostery | 2010  | 2018  | MPL-2.0
GEM family  | 1985  | 1999[48] | GPL[48] | Development continued as OpenGEM and FreeGEM.[48]
Gentium (font)  | 2002  | 2005  | OFL | Through the efforts of SIL International
Gigablast | 2000  | 2013  | Apache-2.0 | [49]
Glitch | 2011  | 2013  | CC0 | After Glitch was officially shut down on 9 December 2012,[50] the artwork and most of the source code was released under the CC0 license on 18 November 2013.[51][52] On 9 December 2014, a fan project to relaunch Glitch under the name Eleven began alpha testing.[53]
GLX  | 1990s  | 2008  | SGI FreeB License | [54]
GW-BASIC | 1983  | 2020  | MIT | [55]
Haaf's Game Engine  | 2004  | 2005  | LGPL-2.0
Hovertank 3D | 1991  | 2014  | GPL-2.0-or-later | [19]
ILWIS | 1988  | 2007  | GPL-2.0-only | Released as free and open-source software by ITC
id Tech 1 | 1993  | 1999  | GPL-2.0-or-later | The released version is the source code to Doom. Originally released under a restrictive license on 23 December 1997.[56] The sources for Heretic and Hexen (other two games using the Doom engine) were released under the GPL-2.0-only license.[57] The source code for the Atari Jaguar version of Doom was released under the non-free Doom Source License.[58] The source code for the 3DO Interactive Multiplayer port of Doom was released under the MIT License.[59]
id Tech 2 | 1996  | 1999  | GPL-2.0-or-later | The released version is the source code to Quake. The map sources were also released under the GPL in 2006.[citation needed] In 2000 the source for Hexen II (another game using the id Tech 2 engine) was released under the GPL-2.0-only license.[60]
id Tech 2.5 | 1997  | 2001  | GPL-2.0-or-later | The released version is the source code to Quake II.
id Tech 3 | 1999  | 2005  | GPL-2.0-or-later | The released version is the source code to Quake III Arena. The source code for other id Tech 3 games, such as Star Wars Jedi Knight II, and Star Wars Jedi Knight was also released.[61]
id Tech 3.5 | 2001  | 2010  | GPL-3.0-or-later | The released version is the source code to Return to Castle Wolfenstein and Wolfenstein.[62]
id Tech 4 | 2004  | 2011  | GPL-3.0-or-later | The released version is the source code to Doom 3. Changes to the code had to be made to avoid use of the patented Carmack's Reverse.
id Tech 4.5 | 2012  | 2012  | GPL-3.0-or-later | The released version is the source code to Doom 3.[63]
Impulse Tracker | 1995  | 2014  | BSD-3-Clause | Jeffrey Lim released the source code to Impulse Tracker as part of its 20th anniversary, with the main source code released on October 19 and sound driver source code released on December 25.
Inform | 1993  | 2022  | Artistic-2.0 | Source code for Inform 7 v10.1.0 released on GitHub under the Artistic-2.0 license on April 28, 2022.[64]
JaikuEngine  | 2006  | 2009  | Apache-2.0 | [65]
Java | 1995  | 2006–2007  | GPL-2.0-only | On 13 November 2006, Sun Microsystems released much of Java as free software under the terms of the GPL-2.0-only license. On 8 May 2007 Sun finished the process, making all of Java's core code free and open-source, aside from a small portion of code to which Sun did not hold the copyright.[66]
Jumper 2.0  | 2007  | 2008  | GPL | Publicly announced on 29 September 2008,[67]
Komodo IDE | 2000  | 2022  | MPL-1.1 | Open-sourced on December 8, 2022, by ActiveState due to variety of factors, including the deprecation of XUL and XULRunner and the market situation.[68]
KornShell | 1982  | 2000  | custom; now CPL |
Le Lisp | 1981  | 2020  | BSD-2-Clause |
LightZone | 2005  | 2012  | BSD-3-Clause | Company went out of business
Lugaru | 2005  | 2010–2016  | GPL-2.0-or-later/CC BY-SA 3.0 | Source code released by Wolfire Games upon the success of the original Humble Indie Bundle under the GPL-2.0-or-later license.[69] On November 21, 2016, all of the assets (including those of Lugaru HD) were released under the Creative Commons Attribution-ShareAlike 3.0 Unported license.[70]
Maelstrom | 1992  | 1995–2010  | GPL-2.0-or-later/CC BY 3.0
Marathon 2: Durandal | 1995  | 2000  | GPL-2.0-or-later | Only the code was released under the GPL-2.0-or-later license. Now known as Aleph One
Marathon Infinity | 1996  | 2011  | GPL-3.0-or-later |
Mari0 | 2012  | 2018  | MIT | Developed using the LÖVE framework and originally available under the CC BY-NC-SA 3.0 license, it was relicensed to the MIT license on September 29, 2018.[71]
MiniPanzer and MegaPanzer |  |  | GPL | The source code of the programs was released under the GPL in 2009 by their author, who retained the copyright.[72]
MINIX | 1987  | 2000  | BSD-3-Clause |
Motif  | 1980s  | 2012  | LGPL-2.1-or-later | [73]
Movable Type | 2001  | 2007  | GPL | Weblog software
MP/M family  | 1979  | 1997,[28][29] 2001[31][32][33][34] |  | [28][29][31][32][33][34]
MS-DOS 1.25 and 2.0  | 1982–1983  | 2018  | MIT | Originally uploaded by the Computer History Museum in 2014 under a non-commercial license,[74] on 28 September 2018, Microsoft uploaded the source code to GitHub under the MIT license.[75]
.NET Framework (most components)  | 2002  | 2014  | MIT, Apache-2.0, BSD license | Starting in 2014 Microsoft released most of their .NET ecosystem software (.NET Micro Framework, .NET Compiler Platform, ASP.NET, Entity Framework, NuGet etc.) under FOSS licenses and shifted the code to a GitHub repository.[76][77][78][79][80][81][82][83][84][85][86][87]
NetBeans | 1997  | 2007  | GPL, CDDL | An integrated development environment (IDE) for Java and other programming languages
Netscape Enterprise Server  |  | 2009  | BSD | Sun Microsystems open sourced it.[88]
Netscape Navigator/Communicator | 1994  | 1998  | MPL | See Mozilla[89][90]
OpenGL sample implementation  | 1992  | 2008  | SGI FreeB License | [54]
Open Sound System | 1992  | 2007  | GPL-2.0-only, CDDL-1.0 |
OpenWRT  | ?  | 2003  | GPL | As Linksys built the firmware for their WRT54G wireless router also from GPL'ed code,[91] they were required to make the source code available in July 2003.[92][93]
Performance Co-Pilot | 1993  | 1999  | GPL, LGPL |
PhysX | 2001  | 2018  | BSD-3-Clause | [94]
Pinball Construction Set | 1982–1983  | 2013  | MIT
Plan 9 from Bell Labs | 1992/1995–2000  | 2021  | MIT
PowerShell | 2006  | August 2016  | MIT | Open sourced by Microsoft in August 2016 on GitHub.[95]
Qt | 1991  | 1999  | QPL | First released as open source under the QPL license. Later released under the GPL license. Qt 4.5 and later are released under the LGPL license. Until 2005 the Windows version was only under a proprietary license.
RakNet | 2003  | 2014  | BSD-2-Clause | Oculus VR acquired RakNet and open-sourced it shortly after.[96]
Rebol | 1997  | 2012  | Apache-2.0 | Following the discussion with Lawrence Rosen,[97] the Rebol version 3 interpreter was released under the Apache-2.0 license on 12 December 2012.[98]
Rise of the Triad | 1994  | 2002  | GPL-2.0-or-later | Only the code was released under the GPL-2.0-or-later license.
Ryzom | 2004  | 2010  | AGPL-3.0-or-later | [99][100]
Sandboxie | 2004  | 2020  | GPL-3.0-or-later | The final 5.40 version was a source code-only release,[101] published a year after Sophos announced its discontinuation of development.[102]
Second Life client  | 2003  | 2007  | GPL-2.0 |
Second Reality | 1993  | 2013  | Public domain software (Unlicense)  | Released by Jussi Laakkonen, former member of Future Crew, to celebrate the 20th anniversary of the original release.[103]
SimCity | 1989  | 2007  | GPL-3.0-or-later | Free version released as 'Micropolis' [104]
Solar2D | 2009  | 2019  | GPL-3.0 | Originally released under the GPL-3.0 license (with an option for a commercial license),[105] the following year it was re-licensed under the MIT license.[106]
Solaris | 1989  | 2005  | CDDL | Free version released as OpenSolaris, which was discontinued in 2010. Forked as Illumos.
Soldat | 2002  | 2020  | MIT/CC BY 4.0 | Originally limited to the game engine,[107] assets followed shortly after under CC BY 4.0 license.[108]
Source Code Control System | 1972  | 2006  | CDDL |
StarOffice | 1986  | 2000  | LGPL/SISSL[109] | Free version released as OpenOffice.org, later released only under the LGPL license. (OpenOffice.org was discontinued in 2011, but forks—most prominently LibreOffice (licensed under the MPL-2.0 license) and Apache OpenOffice (licensed under the Apache-2.0 license)—have become its dominant successors.) StarOffice was still released separately under a proprietary license, using mostly the same code, until its discontinuing in 2011; Sun required all contributors to the main OpenOffice.org project assign joint copyright to Sun.
Star Ruler 2[110] | 2015  | 2018[110] | MIT / CC BY-NC 2.0 | Source code and assets re-released to the public (except for music, which is kept proprietary). The assets are under a non-free CC BY-NC 2.0 license.
Stride | 2014  | 2014  | GPL-3.0 | Originally released under the GPL-3.0 license (with an option for a commercial license),[111] it became proprietary in 2017,[112] and it was re-licensed to the MIT license in 2018.[113]
Super Lemonade Factory | 2012  | 2012–2021  | MIT/GPL-3.0-only | Source code for the Adobe AIR (Microsoft Windows/Mac OS X) and Flixel (iOS) versions was released on 27 July 2012 on GitHub under the MIT License, the assets were included but were not free.[114] The entire source code repository for the Ouya version was released on 4 February 2021 under the GPL-3.0-only license.[115]
Symbian platform  | 1998  | 2010  | EPL |
Synfig | 2001  | 2005  | GPL-2.0-or-later | Some more information is available on the Synfig history page.
Tesseract OCR  | 1985  | 2005  | Apache-2.0 | Released as free and open-source software by HP and UNLV
TextSecure | 2010  | 2011  | GPL-3.0 | Since renamed to Signal
Torque 2D/iTorque 2D  | 2006–2009  | 2013  | MIT | A combination of Torque 2D and iTorque,[116] named Torque 2D MIT, was released under the MIT license by GarageGames.[117] The source code for Larva Mortus, a game using the engine, was released on 1 May 2009 under a non-free non-commercial license.[118]
Torque 3D | 2001  | 2012  | MIT | Developed for Tribes 2. Released as free and open-source software by GarageGames.[119]
TurboCASH | 1985  | 2003  | GPL |
Two Tribes Engine | 2007  | 2021  | GPL-2.0-only | On December 17, 2021, Two Tribes released the source code to their in-house game engine under the terms of the GPL-2.0-only license (with an option for a proprietary license).[120]
Ancient UNIX (Version 6 Unix, Version 7 Unix, UNIX/32V)  | 1971—1979  | 2002  | BSD-4-Clause | The source code for the versions 1 to 7 of Unix and UNIX/32V was re-licensed by Caldera International (later SCO Group) under the BSD-4-Clause free-software license.[121][122]
ViewMAX | 1990  | 1999[48] | GPL[48] |
Visual Studio Code | 2015  | 2015[123] | MIT |
Warzone 2100 | 1999  | 2004  | GPL-2.0-or-later | Video game by Eidos Interactive
Watcom C compiler  | 1988  | 2003  | Sybase Open Watcom Public License | Free version released as Open Watcom under a license which is considered non-free by the GNU project[124] but acceptable by the OSI.
Windows Calculator | 1985  | 2019  | MIT
Windows Console |  | 2019  | MIT | In 2019, the Windows Console infrastructure was open-sourced under the MIT license, alongside Windows Terminal.[125]
Windows Live Writer | 2012  | 2015  | MIT | An open source fork of Windows Live Writer was released as Open Live Writer by Microsoft on 9 December 2015.[126]
Wintermute Engine | 2003  | 2009  | LGPL-3.0-or-later | Source code released upon request under the LGPL-3.0-or-later license with the release of the version 1.8.9.[127] Publicly available under the terms of the MIT license since March 23, 2013.[128] The source code for The White Chamber, a game using the engine, was released on 30 June 2008 under a non-free CC BY-NC-SA 2.0 UK license.[129]
Wire | 2014  | 2016  | GPL-3.0  |
Wolfenstein 3D engine | 1992  |  | GPL-2.0-or-later | Originally released under a restrictive license on 21 July 1995, it was relicensed to the GPL at some point.[130] The source code for Rise of the Triad and Blake Stone (two games using the engine) was also released under the GPL-2.0-or-later.[131][132]
Worms? | 1983  | 2021  | MIT | [133]
XMind | 2007  | 2008  | EPL and LGPL | Mindmapping software based on the Eclipse RCP
YSFlight | 1999  | 2022  | BSD-3-Clause | [134]
ZFS | 200?  | 2005  | CDDL | Released by Sun Microsystems under an open-source license in 2005.[135] Due to a FSF announced license incompatibility of the GPL with the CDDL, ZFS wasn't directly integrated in Linux, but in the BSDs or MacOS due to their permissive licensed kernel which offers better license compatibility. After the later owner Oracle didn't release after version 28, the community forked to OpenZFS.[136]

## See also

* History of free and open-source software
* List of commercial video games with available source code
* List of free and open-source software packages
* List of free and open-source web applications
* List of proprietary source-available software
* List of formerly free and open-source software

## References

1. ↑ Endicott, Sean (4 May 2022). "Nerd sniping convinces Microsoft to open source 3D Movie Maker from 1995". Future plc. https://www.windowscentral.com/nerd-sniping-convinces-microsoft-open-source-3d-movie-maker-1995.
2. ↑ Speed, Richard (4 May 2022). "Microsoft reanimates 1995's 3D Movie Maker via GitHub". Situation Publishing. https://www.theregister.com/2022/05/04/3d_movie_make/.
3. ↑ Buria, Taras (4 May 2022). "Windows 3D Movie Maker from 1995 is now open source". https://www.neowin.net/news/windows-3d-movie-maker-from-1995-is-now-open-source/.
4. ↑ 4.0 4.1 Cunningham, Andrew (4 May 2022). "Microsoft open-sourced the code for 1995's 3D Movie Maker because someone asked". Condé Nast. https://arstechnica.com/gadgets/2022/05/microsoft-open-sourced-the-code-for-1995s-3d-movie-maker-because-someone-asked/.
5. ↑ "AOLServer Open Sourced". Slashdot. 8 July 1999. http://slashdot.org/story/99/07/09/0232220/aolserver-open-sourced.
6. ↑ "Google releases Wave protocol implementation source code | Ars Technica". https://arstechnica.com/information-technology/2009/07/google-releases-wave-protocol-implementation-source-code/.
7. ↑ Polyacov, Ivan (29 March 2020). "The game engine is made open source". Valve Corporation. https://store.steampowered.com/news/app/22500/view/2121699291612666539.
8. ↑ Polyacov, Ivan (30 September 2020). "Source code of the Astral Towers game". https://www.patreon.com/posts/source-code-of-42204726. "As promised, here is the source code of the Astral Towers game recently published on Steam. It can be compiled with Delphi Community Edition."
9. ↑ "Atom: Free and open source for everyone · GitHub". https://github.com/blog/1831-atom-free-and-open-source-for-everyone.
10. ↑ BlitzPlus Source Code Released by simonh (2014-04-29)
11. ↑ Blitz3D open sourced! on Blitz3D Forums by (2014)
12. ↑ Blitz3D Now Free and Open Source! by simonh (2014-08-03)
13. ↑ blitz3d on github.com
14. ↑ blitzmax on github.com
15. ↑ "C-Dogs". http://www.orcsoftware.com/~ronny/C-Dogs.html. "I've decided to release the C-Dogs source publically [sic]. Do with it what you wish, but please bear in mind that the graphics are still mine."
16. ↑ "C-Dogs is now free". 7 May 2016. https://cxong.github.io/cdogs-sdl/news/2016/05/07/c-dogs-is-now-free.html.
17. ↑ Fuchs, Carsten (25 December 2009). "Cafu is now open-source!". https://www.cafu.de/news/cafu-is-now-open-source/.
18. ↑ Fuchs, Carsten (19 June 2016). "Changing the license from GPL to MIT". https://www.cafu.de/news/changing-the-license-from-gpl-to-mit/.
19. ↑ 19.0 19.1 19.2 19.3 19.4 19.5 "[Phoronix] id Software's Softdisk Open-Sources Some Really Old Games". https://www.phoronix.com/scan.php?page=news_item&px=MTcxMjM.
20. ↑ Larabel, Michael (24 August 2022). "Cemu Emulator For The Wii U Now Open-Source, Building On Linux". https://www.phoronix.com/news/Cemu-Open-Source-Linux.
21. ↑ "CDE released as open source". OSNews. http://www.osnews.com/story/26247/CDE_released_as_open_source.
22. ↑ "How the Operating System Got Graphical". The Open Group. http://blog.opengroup.org/2012/09/27/how-the-operating-system-got-graphical/.
23. ↑ Microsoft open sources Edge web browser's JavaScript engine, plans port to Linux on zdnet.com by Steven J. Vaughan-Nichols (on 2016-01-13)
24. ↑ "Microsoft Edge's JavaScript engine to go open-source". Microsoft. https://blogs.windows.com/msedgedev/2015/12/05/open-source-chakra-core/.
25. ↑ "CMU Sphinx Open Sourced". Slashdot. http://news.slashdot.org/story/00/01/31/0848243/cmu-sphinx-open-sourced.
26. ↑ "SourceForge: CMU Sphinx Transition to Open Source". 2000-04-22. http://sourceforge.net/forum/forum.php?forum_id=5494.
27. ↑ "Coherent UNIX clone goes Open Source". OSNews. 2015-04-02. http://www.osnews.com/story/28443/Coherent_UNIX_clone_goes_Open_Source.
28. ↑ 28.0 28.1 28.2 28.3 Olmstead, Tim (1997-08-10). "CP/M Web site needs a host". Newsgroup: comp.os.cpm. Archived from the original on 2017-09-01. Retrieved 2018-09-09.
29. ↑ 29.0 29.1 29.2 29.3 Olmstead, Tim (1997-08-29). "ANNOUNCE: Caldera CP/M site is now up". Newsgroup: comp.os.cpm. Archived from the original on 2017-09-01. Retrieved 2018-09-09. [1]
30. ↑ 30.0 30.1 "License Agreement". Caldera, Inc.. 1997-08-28. http://www.retroarchive.org/cpm/archive/unofficial/lisence.html. [2][yes|permanent dead link|dead link}}] [3][yes|permanent dead link|dead link}}]
31. ↑ 31.0 31.1 31.2 31.3 Chaudry, Gabriele "Gaby", ed (2001-10-19). "License agreement for the CP/M material presented on this site". Lineo, Inc.. http://www.cpm.z80.de/license.html. "[…] Let this email represent a right to use, distribute, modify, enhance and otherwise make available in a nonexclusive manner the CP/M technology as part of the "Unofficial CP/M Web Site" with its maintainers, developers and community. I further state that as Chairman and CEO of Lineo, Inc. that I have the right to do offer such a license. […] Bryan Sparks […]"
32. ↑ 32.0 32.1 32.2 32.3 Chaudry, Gabriele "Gaby", ed. "The Unofficial CP/M Web Site". http://www.cpm.z80.de/.
33. ↑ 33.0 33.1 33.2 33.3 "CP/M collection is back online with an Open Source licence - Walk down memory lane". The Register. 2001-11-26. https://www.theregister.co.uk/2001/11/26/cp_m_collection_is_back/.
34. ↑ 34.0 34.1 34.2 34.3 "CP/M and DRM". Dr. Dobb's Journal (CMP Media LLC) 29 (6): 71–73. 2004-06-01. #361. http://www.drdobbs.com/cpm-and-drm/184405699. Retrieved 2018-09-09. [4]
35. ↑ 35.0 35.1 "Early Digital Research CP/M Source Code". Computer History Museum. 2014-10-01. http://www.computerhistory.org/atchm/early-digital-research-cpm-source-code/.
36. ↑ Dawe, Liam (1 November 2023). "War Thunder game engine Dagor Engine from Gaijin now open source". https://www.gamingonlinux.com/2023/11/war-thunder-game-engine-dagor-engine-from-gaijin-now-open-source/.
37. ↑ Chirkov, Maxim, ed (29 October 2023). "Открыт код игрового движка Dagor Engine, который будет использован VK в Nau Engine" (in ru). https://www.opennet.ru/opennews/art.shtml?num=60009.
38. ↑ "Dink Smallwood Source License Information". Code Dojo. http://www.codedojo.com/files/dink/license.txt.
39. ↑ Public.Domain.notice.txt on apple2.org.za
40. ↑ "MySQL Falcon Storage Engine Open Sourced". Slashdot. http://tech.slashdot.org/story/07/01/02/209227/mysql-falcon-storage-engine-open-sourced.
41. ↑ "'90s kids rejoice! Microsoft releases the original Windows 3.0 File Manager source code – TechCrunch". https://techcrunch.com/2018/04/09/90s-kids-rejoice-microsoft-releases-the-original-windows-3-0-file-manager-source-code/.
42. ↑ 42.0 42.1 Microsoft Corporation. "Microsoft/winfile: Original Windows File Manager (winfile) with enhancements". GitHub. https://github.com/microsoft/winfile.
43. ↑ Free Download Manager » Blog Archive » FDM 2.5 is released!
44. ↑ "Apple Acquires Durable Database Company FoundationDB". 2015-03-24. https://techcrunch.com/2015/03/24/apple-acquires-durable-database-company-foundationdb/.
45. ↑ "Apple unleashes FoundationDB as an open source project". The Register. 2018-04-20. https://www.theregister.co.uk/2018/04/20/apple_foundationdb_open/.
46. ↑ G. Andrew Stone, "Recreational Software Design's GameMaker product, released in 1994"
47. ↑ Cannon, Tony [@Pond3r] (2019-10-09). "GGPO has a new home and is now available under the MIT license. Get it here!: t.co/7KXHGQ7OMN". https://twitter.com/Pond3r/status/1181800172184977408.
48. ↑ 48.0 48.1 48.2 48.3 48.4 "Caldera releases GEM under the GPL". Deltasoft - GEM News. April 1999. http://www.deltasoft.com/news.htm. "Caldera Thin Clients, Inc. released the source code for GEM and ViewMAX under the GNU Public License in mid April, following years of speculation over GEM's future. Caldera bought the GEM sources from Novell along with the DR-DOS in 1996, at the time noting that they may develop GEM into a platform for mobile computers and thin clients. However, these plans were dropped, and GEM was instead released into the open-source community."
49. ↑ Gigablast Inc.. "Gigablast Now an Open Source Search Engine". https://www.prnewswire.com/news-releases/gigablast-now-an-open-source-search-engine-217624911.html.
50. ↑ "A sad announcement from Tiny Speck". http://www.glitchthegame.com/closing/.
51. ↑ tinyspeck (2013-11-18). "Glitch is Dead, Long Live Glitch! - Art & Code from the Game Released into Public Domain". glitchthegame.com. http://www.glitchthegame.com/public-domain-game-art/. "The entire library of art assets from the game, has been made freely available, dedicated to the public domain. Code from the game client is included to help developers work with the assets. All of it can be downloaded and used by anyone, for any purpose."
52. ↑ "Afterlife of an MMO: Glitch's offbeat art enters public domain". pcworld.com. 2013-11-18. http://www.pcworld.com/article/2064273/afterlife-of-an-mmo-glitchs-offbeat-art-enters-public-domain.html.
53. ↑ "'Two Years Past' or 'Welcome Home'". The Eleven Project. http://wp.elevengiants.com/?p=372.
54. ↑ 54.0 54.1 "SGI - Press Releases: SGI Further Opens Its OpenGL Contributions". 2008-12-02. http://www.sgi.com/company_info/newsroom/press_releases/2008/september/opengl.html.
55. ↑ Turner, Rich (21 May 2020). "Microsoft Open-Sources GW-BASIC". Windows Command Line (Microsoft). https://devblogs.microsoft.com/commandline/microsoft-open-sources-gw-basic/.
56. ↑ "Hot New Stuff". id Software. 4 January 1998. http://idsoftware.com/hot/index.html. "Dec 23rd, 1997: John Carmack has released the DOOM Source Code on our ftp site. More information can be found in the readme."
57. ↑ Frederick, Logan (8 September 2008). "Hexen and Heretic Code Opened Under GPL". Themis Media. https://v1.escapistmagazine.com/news/view/86131-Hexen-and-Heretic-Code-Opened-Under-GPL.
58. ↑ Yarusso, Albert (27 April 2003). "Jaguar DOOM Source Code Released!". https://atariage.com/forums/topic/25350-jaguar-doom-source-code-released/.
59. ↑ Prescott, Shaun (16 December 2014). "DOOM 3DO source code is now publicly available". PC Gamer (Future plc). https://www.pcgamer.com/doom-3do-source-code-is-now-publicly-available/. Retrieved 23 December 2021.
60. ↑ "Hexen 2 source released". GameSpy Industries. http://archive.gamespy.com/news/november00/hexen2/.
61. ↑ Plunkett, Luke (2013-04-03). "Lucasarts' Closure Convinces Developers To Release Awesome Star Wars Source Code". Kotaku. http://kotaku.com/lucasarts-closure-convinces-developers-to-release-awes-468994505. "In the wake of Lucasarts' closure today, Raven - the developers of the thoroughly excellent Jedi Outcast - have decided to release the source code for the game. Oh, and the code for its sequel, Jedi Academy, as well."
62. ↑ O'Connor, Alice; Leahy, Brian (13 August 2010). "Source Code Released for Wolfenstein: Enemy Territory and Return to Castle Wolfenstein". GameFly Media. https://www.shacknews.com/article/65118/source-code-released-for-wolfenstein.
63. ↑ Grandstaff, Matt (26 November 2012). "Source Code and Title Update for BFG Edition". ZeniMax Media. http://www.bethblog.com/2012/11/26/source-code-and-title-update-for-bfg-edition/.
64. ↑ "Inform 7 v10.1.0 is now open-source". April 28, 2022. https://intfiction.org/t/inform-7-v10-1-0-is-now-open-source/55674.
65. ↑ "Jaikido Blog: JaikuEngine is now open source!". http://jaikido.blogspot.de/2009/03/jaikuengine-is-now-open-source.html.
66. ↑ open.itworld.com - JAVAONE: Sun - The bulk of Java is open sourced
67. ↑ "Jumper Networks Press Release for Jumper 2.0". Jumper Networks, Inc.. 2008-09-29. http://www.jumpernetworks.com/NEWS-Jumper_Networks_Releases_Jumper_2.0_Platform.pdf.
68. ↑ Hoffman, Carey (8 December 2022). "ActiveState Komodo IDE Now Open Source". ActiveState. https://www.activestate.com/blog/activestate-komodo-ide-now-open-source/.
69. ↑ Rosen, David (11 May 2010). "Lugaru goes open-source". Wolfire Games. http://blog.wolfire.com/2010/05/Lugaru-goes-open-source.
70. ↑ Rosen, David (21 November 2016). "Relicensing all Wolfire Lugaru assets to CC-BY-SA 3.0 (51203b53) · Commits · OSS Lugaru / lugaru · GitLab". https://gitlab.com/osslugaru/lugaru/-/commit/51203b531b2054a8a7c40356e2108a5ec7b9f366.
71. ↑ Guégan, Maurice (29 September 2018). "Change license to MIT". https://github.com/Stabyourself/mari0/commit/f00ca704b1d18bfa740936cfe77113af987acf68.
72. ↑ "Swiss coder publicises government spy Trojan - Techworld.com". http://news.techworld.com/security/3200593/swiss-coder-publicises-government-spy-trojan.
73. ↑ "ICS MotifZone". October 2012. http://motif.ics.com/.
74. ↑ "Computer History Museum Makes Historic MS-DOS and Word for Windows Source Code Available to the Public". Computer History Museum. 25 March 2014. https://computerhistory.org/press-releases/ms-source-code/.
75. ↑ Turner, Rich (28 September 2018). "Re-Open-Sourcing MS-DOS 1.25 and 2.0". Microsoft. https://devblogs.microsoft.com/commandline/re-open-sourcing-ms-dos-1-25-and-2-0/.
76. ↑ NET Core is Open Source on dotnetfoundation.org (November 2014)
77. ↑ ".NET Core 5". .NET Foundation. https://www.dotnetfoundation.org/netcore5.
78. ↑ ".NET Micro Framework". .NET Foundation. https://www.dotnetfoundation.org/dotnet-micro-framework.
79. ↑ ".NET Compiler Platform ("Roslyn")". .NET Foundation. https://www.dotnetfoundation.org/dotnet-compiler-platform.
80. ↑ "ASP.NET 5". .NET Foundation. https://www.dotnetfoundation.org/aspnet-5.
81. ↑ "ASP.NET MVC, Web API and Web Pages (Razor)". .NET Foundation. https://www.dotnetfoundation.org/aspnet-4.
82. ↑ "ASP.NET Ajax Control Toolkit". .NET Foundation. https://www.dotnetfoundation.org/aspnet-ajax.
83. ↑ "ASP.NET SignalR". .NET Foundation. https://www.dotnetfoundation.org/asp.net-signalr.
84. ↑ "Entity Framework 6". .NET Foundation. https://www.dotnetfoundation.org/entity-framework-6.
85. ↑ "NuGet". .NET Foundation. https://www.dotnetfoundation.org/nuget.
86. ↑ "Announcing .NET 2015 Preview: A New Era for .NET". Microsoft. 2014-11-12. http://blogs.msdn.com/b/dotnet/archive/2014/11/12/announcing-net-2015-preview-a-new-era-for-net.aspx.
87. ↑ "Microsoft .NET Framework Redistributable EULA". Microsoft. https://msdn.microsoft.com/en-us/library/ms994405.aspx.
88. ↑ "Announcing Open Source Web Server". sun.com. 2009-01-13. http://blogs.sun.com/jyrivirkki/date/20090113.
89. ↑ "NETSCAPE ANNOUNCES PLANS TO MAKE NEXT-GENERATION COMMUNICATOR SOURCE CODE AVAILABLE FREE ON THE NET". Netscape Communications Corporation. 1998-01-22. http://wp.netscape.com/newsref/pr/newsrelease558.html. "BOLD MOVE TO HARNESS CREATIVE POWER OF THOUSANDS OF INTERNET DEVELOPERS; COMPANY MAKES NETSCAPE NAVIGATOR AND COMMUNICATOR 4.0 IMMEDIATELY FREE FOR ALL USERS, SEEDING MARKET FOR ENTERPRISE AND NETCENTER BUSINESSES"
90. ↑ "MOUNTAIN VIEW, Calif., April 1 /PRNewswire/ -- Netscape Communications and open source developers are celebrating the first anniversary, March 31, 1999, of the release of Netscape's browser source code to mozilla.org". Netscape Communications. 1999-03-31. http://www.prnewswire.com/news-releases/netscape-celebrates-first-anniversary-of-open-source-software-release-to-mozillaorg-73806207.html. "[…] The organization that manages open source developers working on the next generation of Netscape's browser and communication software. This event marked a historical milestone for the Internet as Netscape became the first major commercial software company to open its source code, a trend that has since been followed by several other corporations. Since the code was first published on the Internet, thousands of individuals and organizations have downloaded it and made hundreds of contributions to the software. Mozilla.org is now celebrating this one-year anniversary with a party Thursday night in San Francisco."
91. ↑ Linksys WRT54G and the GPL on lkml (2003-06-07)
92. ↑ The Open Source WRT54G Story By Aaron Weiss (2005-11-08)
93. ↑ Linksys Releases GPLed Code for WRT54G on slashdot (July 2003)
94. ↑ Lebaredian, Rev (3 December 2018). "NVIDIA Extends PhysX for High-Fidelity Simulations, Goes Open Source". Nvidia. https://blogs.nvidia.com/blog/2018/12/03/physx-high-fidelity-open-source/.
95. ↑ Microsoft open sources PowerShell; brings it to Linux and OS X by Mary Jo Foley on zdnet.com (2016-08-18)
96. ↑ "Announcing Oculus Connect, RakNet Open Source, and E3 2014 Awards". Facebook, Inc.. 7 July 2014. https://www.oculus.com/blog/announcing-oculus-connect-raknet-open-source-and-e3-2014-awards/.
97. ↑ "REBOL to become open source". Rebol.com. 2012-09-25. http://www.rebol.com/article/0511.html.
98. ↑ "Comments on: R3 Source Code Released!". rebol.com. 2012-12-12. http://www.rebol.com/cgi-bin/blog.r?view=0519. "You probably thought the source release would never happen? Am I right? Well, it's there now in github at github.com/rebol/rebol."
99. ↑ "Ryzom is free software! What can we do from here?". Free Software Foundation. 2010-05-04. https://www.fsf.org/blogs/licensing/ryzom-free-software.
100. ↑ "Ryzom source released as free software". 2010-05-06. https://lwn.net/Articles/386551/.
101. ↑ "Sandboxie - Download the latest version of Sandboxie" (in en). https://www.sandboxie.com/DownloadSandboxie.
102. ↑ "[IMPORTANT Sandboxie Open Source Code is available for download"] (in en). Sophos. 2020-04-08. https://community.sophos.com/products/sandboxie/f/forum/119641/important-sandboxie-open-source-code-is-available-for-download.
103. ↑ Smith, Ryan (1 August 2013). "Happy 20th Birthday Second Reality". Future plc. https://www.anandtech.com/show/7196/happy-20th-birthday-second-reality.
104. ↑ "Micropolis Downloads". Donhopkins.com. http://www.donhopkins.com/home/micropolis/.
105. ↑ Miracle, Rob (2 January 2019). "The Corona 2D game engine is going open source in 2019". Corona Labs. https://coronalabs.com/blog/2019/01/02/the-corona-2d-game-engine-is-going-open-source-in-2019/. "Corona will be dual-licensed under both commercial and open source licenses. The open source license is the GNU GPLv3 license, and commercial license will be available upon agreement with Corona Labs."
106. ↑ Miracle, Rob (30 April 2020). "Future of Corona". Corona Labs. https://coronalabs.com/blog/2020/04/30/future-of-corona/. "Pretty much all code related to Corona Labs has been made available under the MIT license."
107. ↑ Marcinkowski, Michael (26 May 2020). "Soldat source code released and a story of how it all started". UBM Technology Group. https://www.gamasutra.com/blogs/MichaelMarcinkowski/20200526/363614/Soldat_source_code_released_and_a_story_of_how_it_all_started.php.
108. ↑ Soldat asset license on github.com
109. ↑ "StarOffice Code Released in Largest Open Source Project". linuxtoday.com. 2000-10-13. http://www.linuxtoday.com/developer/2000101300221NWDTSW. "Sun's joint effort with CollabNet kicked into high gear on the OpenOffice Web site at 5 a.m. PST this morning with the release of much of the source code for the upcoming 6.0 version of StarOffice. According to Sun, this release of 9 million lines of code under GPL is the beginning of the largest open source software project ever."
110. ↑ 110.0 110.1 "Star Ruler 2 is now Open Source!". 2018-07-22. https://steamcommunity.com/app/282590/discussions/1/1710690176754840807/.
111. ↑ "Open sourcing, new platforms and more". Silicon Studio. 17 October 2014. https://stride3d.net/blog/new-version-open-sourcing/.
112. ↑ "Release and Pricing Information". Silicon Studio. 3 March 2017. https://stride3d.net/blog/release-and-pricing-info/.
113. ↑ Bello, Virgile (2 August 2018). "Xenko 3.0 is now free and open-source!". https://stride3d.net/blog/xenko-opensource-mit/.
114. ↑ Brouwer, Shane (27 July 2012). "Super Lemonade Factory releases source code". http://initialscommand.com/main/?p=656.
115. ↑ Brouwer, Shane [@initials_games] (4 February 2021). "So do you remember the OUYA preservation effort? I've just dumped the source code for Super Lemonade Factory for OUYA and you're welcome to do whatever you want with it". https://twitter.com/initials_games/status/1357172820640337922.
116. ↑ Preisz, Eric (12 December 2012). "Torque 2D MIT Coming Soon". GarageGames. http://www.garagegames.com/community/blogs/view/22062/. "Torque 2D MIT is an all new, open source, version of our 2D game development software. [...] Take Torque 2D, combine it with iTorque, add in Box 2D physics, several major enhancements and bug fixes, and make it open source. That is Torque 2D MIT."
117. ↑ Perry, Michael (5 February 2013). "Torque 2D MIT 2.0 Now Available!". GarageGames. http://www.garagegames.com/community/blogs/view/22166.
118. ↑ Tovarys, Pavel (1 May 2009). "Source code of Larva Mortus". Rake in Grass. http://blog.rakeingrass.com/?p=23.
119. ↑ Wyand, Dave (20 September 2012). "It's here! The MIT licensed Torque 3D GitHub repo is ready!". GarageGames. http://www.garagegames.com/community/blogs/view/21886/.
120. ↑ "Two Tribes' Game Engine is Now Open Source!". 17 December 2021. https://www.gamespress.com/en-AU/Two-Tribes-Game-Engine-is-Now-Open-Source.
121. ↑ Johnson, Dion L., II (2002-01-24). "Liberal license for ancient UNIX sources". http://www.lemis.com/grog/UNIX/.
122. ↑ Broderick, Bill (January 23, 2002). "Dear Unix enthusiasts". Caldera International. https://www.tuhs.org/Archive/Caldera-license.pdf.
123. ↑ "Visual Studio now supports debugging Linux apps; Code editor now open source". Ars Technica. 2015-11-18. https://arstechnica.com/information-technology/2015/11/visual-studio-now-supports-debugging-linux-apps-code-editor-now-open-source/.
124. ↑ Watcom on gnu.org
125. ↑ Cinnamon, Kayla (6 May 2019). "Introducing Windows Terminal". Microsoft. https://devblogs.microsoft.com/commandline/introducing-windows-terminal/.
126. ↑ Microsoft open-sources Live Writer, beloved but abandoned blogging tool by Peter Bright on Ars Technica "Opening the app means that it'll get some much-needed maintenance." (2015)
127. ↑ "Wintermute Engine » license". http://dead-code.org/home/index.php/license/.
128. ↑ Nedoma, Jan (23 March 2013). "Wintermute Engine source code - the complete guide". http://forum.dead-code.org/index.php?topic=5434.0.
129. ↑ "the white chamber source code released". Studio Trophis Production Company. 30 June 2008. https://www.studiotrophis.com/site/news/twcopensource.
130. ↑ readme_iWolf.txt: «I released the original source for Wolfenstein 3D many years ago, originally under a not-for-commercial purposes license, then later under the GPL.»
131. ↑ Siegler, Joe (20 December 2002). "Rise of the Source Code". 3D Realms. http://legacy.3drealms.com/news/2002/12/rise_of_the_sou.html.
132. ↑ "Apogee Releases Blake Stone Source Code". Apogee Software. 8 July 2013. http://www.apogeesoftware.com/uncategorized/apogee-releases-blake-stone-source-code.
133. ↑ Savetz, Kay [@KaySavetz] (17 March 2021). "Thanks to [John Keoni Morris we have recovered the source code for the Commodore 64 version of "Worms?" (Electronic Arts, 1983.) The creator, David S. Maynard, has released the code with a free software license. I recovered the Atari version last week."]. https://twitter.com/KaySavetz/status/1372225168731295751.
134. ↑ "YSFlight Source Code Released!". 20 August 2022. https://forum.ysfhq.com/viewtopic.php?t=10850.
135. ↑ Sun opens ZFS source code on Ars Technica by Ryan Paul (2005-11-17)
136. ↑ FAQ on open-zfs.org

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