List of formerly proprietary software
In some cases, the company continues to publish proprietary releases alongside the non-proprietary version.
|Title||Original release||Relicensed release||Initial free relicense||Notes|
|Adobe Flex||2004||2007||MPL||Since renamed to Apache Flex and changed to Apache License 2.0|
|AdvFS||1990s||2008||GPL v2||HP opened up AdvFS from Tru64 UNIX.|
|AOLserver||1999||GPL / modified MPL|||
|Apache Derby||1996||2004||Apache License 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 License||Formerly Google Wave.|
|Astrolog||1991||2015||GPL v2+ / custom permissive||Has always been freeware and open source, but had a custom attribution demanding permissive license.|
|BDS C Compiler||1979||2002||Public domain||Released by author|
|Bitstream Vera (font)||2003||custom||Through the efforts of Bitstream and the GNOME Foundation|
|BlitzBASIC (Blitz3D, BlitzPlus, BlitzMax)||2001||2014||zlib license||BlitzPlus was released as Open Source on April 28, 2014 under the zlib license on github.com. Blitz3D follow on August 3, 2014. BlitzMax was open sourced on September 21, 2015.|
|Catacomb II||1991||2014||GPL v2|||
|Catacomb Abyss||1992||2014||GPL v2|||
|Catacomb Armageddon||1992||2014||GPL v2|||
|Catacomb 3D||1991||2014||GPL v2|||
|ChakraCore||2009||2016||MIT||On January 13, 2016 Microsoft released ChakraCore under the MIT license on GitHub. 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.|
|Coherent||1980||2015||3-clause BSD License|||
|CP/M family||1974||1997, 2001, 2014|||
|CuneiForm||1993||2008||BSD||Optical character recognition software|
|Dink Smallwood||1998||2003||zlib-like||Some game data (e.g. sounds) not released under a free license.|
|Doom engine||1993||1999||GPL||Code only. Originally released under a restrictive license in 1997|
|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 3½" 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.|
|Duke Nukem 3D||1996||2003||GPL||Game code only, no data, no engine.|
|Etherpad||2008||2009||Apache License 2.0||Open sourced after being purchased by Google|
|FAR Manager||1996||2007||BSD||Version 2.0 released as open source.|
|File Manager (Windows)||1990||April 2018||MIT||On April 6, 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. 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.|
|Free Download Manager (FDM)||2003||2007||GPL||Free since version 2.5|
|FoundationDB||2013||2018||Apache License 2.0||Apple Inc. acquired the founding company in March 2015 and discontinued downloads of the software. In April 2018, Apple open-sourced the database and resumed downloads.|
|Ghostery||2010||2018||Mozilla Public License 2.0||Cliqz GmbH acquired Ghostery from Evidon, Inc. in February 2017. Ghostery's software was open-sourced on March 8, 2018.|
|GEM family||1985||1999||GPL||Development continued as OpenGEM and FreeGEM.|
|Gentium (font)||2002||2005||OFL||Through the efforts of SIL International|
|Gigablast||2000||2013||Apache License 2.0|||
|Glitch||2011||2013||Public domain software (CC0)||After Glitch was officially shut down on December 9, 2012, the artwork and most of the source code was released under the public domain-like Creative Commons license CC0 on November 18, 2013. On December 9, 2014, a fan project to relaunch Glitch under the name Eleven began alpha testing.|
|GLX||1990s||2008||SGI FreeB License|||
|Hovertank 3D||1991||2014||GPL v2|||
|ILWIS||1988||2007||GPL||Released as free and open-source software by ITC|
|id Tech 2||1997||2001||GPL|
|id Tech 3||1999||2005||GPL|
|id Tech 4||2004||2011||GPL||The released version is the source code to Doom 3; source code to newer id Tech 4 games has yet to be released. Changes to the code had to be made to avoid use of the patented Carmack's Reverse.|
|JaikuEngine||2006||2009||Apache License 2.0|||
|Java||1995||2006–2007||GPL||On November 13, 2006, Sun Microsystems released much of Java as free software under the terms of the GNU General Public License (GPL). On May 8, 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.|
|Jumper 2.0||2007||2008||GPL||Publicly announced on September 29, 2008,|
|Korn shell||1982||2000||custom; now CPL|
|LightZone||2005||2012||3-clause BSD||Company went out of business|
|Marathon 2: Durandal||1995||2000||GPL||Only the code was released under the GPL. Now known as Aleph One|
|MiniPanzer and MegaPanzer||GPL||The source code of the programs was released as GPL in 2009 by their author, who retained the copyright.|
|Movable Type||2001||2007||GPL||Weblog software|
|MP/M family||1979||1997, 2001|||
|.NET Framework (most components)||2002||2014||MIT License, Apache license 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.|
|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.|
|Netscape Navigator/Communicator||1994||1998||MPL||See Mozilla|
|OpenGL sample implementation||1992||2008||SGI FreeB License|||
|Open Sound System||1992||2007||GPL, CDDL|
|OpenWRT||?||2003||GPL||As Linksys built the firmware for their WRT54G wireless router also from GPL'ed code, they were required to make the source code available in July 2003.|
|Performance Co-Pilot||1993||1999||GPL, LGPL|
|PowerShell||2006||August 2016||MIT License||Open sourced by Microsoft in August 2016 on GitHub.|
|Qt||1991||1999||QPL||First released as open source under the QPL. Later released as GPL. Qt 4.5 and later are released under the LGPL. Until 2005 the Windows version was only under proprietary license.|
|Quake engine||1996||1999||GPL||The map sources were also released under the GPL in 2006.|
|RSD Game-Maker||1991||2014||MIT license||After some consultation with the user base, on July 12, 2014 original coder Andy Stone released the Game-Maker 3.0 source code on GitHub, under the MIT license.|
|Rebol||1997||2012||Apache license 2.0||Following the discussion with Lawrence Rosen, the Rebol version 3 interpreter was released under the Apache 2.0 license on December 12, 2012.|
|Rise of the Triad||1994||2002||GPL||Only the code was released under the GPL.|
|Second Life client||2003||2007||GPL v2|
|SimCity||1989||2007||GPL v3||Free version released as 'Micropolis' |
|Solaris||1989||2005||CDDL||Free version released as OpenSolaris|
|Source Code Control System||1972||2006||CDDL|
|StarOffice||1986||2000||LGPL/SISSL||Free version released as OpenOffice.org, later released only under the LGPL. (OpenOffice.org was discontinued in 2011, but forks—most prominently LibreOffice (licensed under the LGPL) and Apache OpenOffice (licensed under the Apache 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||2015||2018||MIT / CC BY-NC||Source code and assets re-released to the public (except for music, which is kept prorietary). The assets are under non-free CC BY-NC license.|
|Synfig||2001||2005||GPL||Some more information is available on the Synfig history page.|
|Tesseract OCR||1985||2005||Apache License 2.0||Released as free and open-source software by HP and UNLV|
|TextSecure||2010||2011||GPLv3||Since renamed to Signal|
|Torque 3D||2001||2012||MIT License||Developed for Tribes 2. Released as free and open-source software by Dynamix|
|Warzone 2100||1999||2004||GPL||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 but acceptable by the OSI.|
|Windows Calculator||1985||2019||MIT License||Windows 1.0, released in November 1985, included the first iteration of Windows Calculator. In March 2019, Microsoft released the source code of Windows Calculator under the MIT License.|
|Windows Live Writer||2012||2015||MIT License||An open source fork of Windows Live Writer was released as Open Live Writer by Microsoft on December 9, 2015.|
|XMind||2007||2008||EPL and LGPL||Mindmapping software based on the Eclipse RCP|
|ZFS||200?||2005||CDDL||Released by Sun Microsystems under an open-source license in 2005. 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 released after version 28, the community forked to OpenZFS.|
- "Archived copy". Archived from the original on March 3, 2016. Retrieved June 9, 2014.CS1 maint: Archived copy as title (link)
- "Archived copy". Archived from the original on June 28, 2016. Retrieved June 14, 2017.CS1 maint: Archived copy as title (link)
- "Archived copy". Archived from the original on October 22, 2015. Retrieved June 9, 2014.CS1 maint: Archived copy as title (link)
- BlitzPlus Source Code Released Archived July 16, 2016, at the Wayback Machine by simonh (April 29, 2014)
- Blitz3D open sourced! Archived September 6, 2016, at the Wayback Machine on Blitz3D Forums by (2014)
- Blitz3D Now Free and Open Source! Archived July 16, 2016, at the Wayback Machine by simonh (August 3, 2014)
- blitz3d Archived February 22, 2017, at the Wayback Machine on github.com
- blitzmax Archived April 9, 2017, at the Wayback Machine on github.com
- "Archived copy". Archived from the original on June 9, 2014. Retrieved June 6, 2014.CS1 maint: Archived copy as title (link)
- Thom Holwerda. "CDE released as open source". OSNews. Archived from the original on August 8, 2012. Retrieved August 6, 2012.
- Dave Lounsbury. "How the Operating System Got Graphical". The Open Group. Archived from the original on November 27, 2012. Retrieved September 27, 2012.
- "CMU Sphinx Open Sourced - Slashdot". news.slashdot.org.
- "SourceForge: CMU Sphinx Transition to Open Source". archive.org. April 22, 2000.
- "Coherent UNIX clone goes Open Source". OSNews. April 2, 2015. Archived from the original on April 4, 2015. Retrieved April 3, 2015.
- Olmstead, Tim (August 10, 1997). "CP/M Web site needs a host". Newsgroup: comp.os.cpm. Retrieved September 9, 2018.
- Olmstead, Tim (August 28, 1997). "ANNOUNCE: Caldera CP/M site is now up". Newsgroup: comp.os.cpm. Retrieved September 9, 2018. 
- "License Agreement". Caldera, Inc. August 28, 1997. Archived from the original on September 24, 2015.   
- Sparks, Bryan W. (October 19, 2001). Chaudry, Gaby (ed.). "License agreement for the CP/M material presented on this site". Lineo, Inc. Archived from the original on September 14, 2015.
[…] 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 […]
- Chaudry, Gaby (ed.). "The Unofficial CP/M Web Site". Archived from the original on February 3, 2016.
- Gasperson, Tina (November 26, 2001). "CP/M collection is back online with an Open Source licence - Walk down memory lane". The Register. Archived from the original on September 1, 2017.
- Swaine, Michael (June 1, 2004). "CP/M and DRM". Dr. Dobb's Journal. Retrieved September 9, 2018.
- Laws, David (October 1, 2014). "Early Digital Research CP/M Source Code". Computer History Museum. Archived from the original on July 27, 2015. Retrieved July 25, 2015.
- "Dink Smallwood Source License Information". Code Dojo. Archived from the original on July 18, 2015. Retrieved July 22, 2015.
- Public.Domain.notice.txt Archived February 1, 2006, at the Wayback Machine on apple2.org.za
- "MySQL Falcon Storage Engine Open Sourced - Slashdot". tech.slashdot.org.
- "'90s kids rejoice! Microsoft releases the original Windows 3.0 File Manager source code – TechCrunch". techcrunch.com.
- Microsoft Corporation. "Microsoft/winfile: Original Windows File Manager (winfile) with enhancements". GitHub. Retrieved April 7, 2018.
- Free Download Manager » Blog Archive » FDM 2.5 is released! Archived February 9, 2012, at the Wayback Machine
- Panzarino, Matthew (March 24, 2015). "Apple Acquires Durable Database Company FoundationDB". TechCrunch. Retrieved January 4, 2019.
- Claburn, Thomas (April 20, 2018). "Apple unleashes FoundationDB as an open source project". The Register. Retrieved January 4, 2019.
- Lomas=date=2017-02-15, Natasha. "Private search browser Cliqz buys Ghostery ad-tracker tool". TechCrunch. Retrieved February 18, 2019.
- Matsakis, Louise (March 8, 2018). "Ad-Blocker Ghostery Just Went Open Source—And Has a New Business Model". Wired. ISSN 1059-1028. Retrieved February 18, 2019 – via www.wired.com.
- Jemmett, Ben A. L. (April 1999). "Caldera releases GEM under the GPL". Deltasoft - GEM News. Archived from the original on November 7, 2016. Retrieved November 7, 2016.
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.
- Gigablast Inc. "Gigablast Now an Open Source Search Engine". PR Newswire. Retrieved January 5, 2019.
- "A sad announcement from Tiny Speck". Archived from the original on November 10, 2013. Retrieved December 31, 2012.
- tinyspeck (November 18, 2013). "Glitch is Dead, Long Live Glitch! - Art & Code from the Game Released into Public Domain". glitchthegame.com. Archived from the original on December 13, 2013. Retrieved December 11, 2013.
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.
- Blackwell, Laura (November 18, 2013). "Afterlife of an MMO: Glitch's offbeat art enters public domain". pcworld.com. Archived from the original on December 9, 2013. Retrieved December 11, 2013.
- "'Two Years Past' or 'Welcome Home'". The Eleven Project. Archived from the original on January 20, 2015. Retrieved January 11, 2015.
- "SGI - Press Releases: SGI Further Opens Its OpenGL Contributions". archive.org. December 2, 2008.
- "Archived copy". Archived from the original on July 14, 2014. Retrieved June 9, 2014.CS1 maint: Archived copy as title (link)
- open.itworld.com - JAVAONE: Sun - The bulk of Java is open sourced Archived September 12, 2007, at the Wayback Machine
- NEWS-Jumper_Networks_Releases_Jumper_2.0_Platform.pdf "Jumper Networks Press Release for Jumper 2.0" Check
|url=value (help) (PDF). Jumper Networks, Inc. September 29, 2008.
- "Archived copy". Archived from the original on October 19, 2014. Retrieved March 17, 2016.CS1 maint: Archived copy as title (link)
- "ICS MotifZone". October 2012. Archived from the original on October 5, 2012. Retrieved December 6, 2017.
- NET Core is Open Source Archived March 1, 2016, at the Wayback Machine on dotnetfoundation.org (November 2014)
- ".NET Core 5". dotnetfoundation.org. .NET Foundation. Archived from the original on February 17, 2015. Retrieved February 17, 2015.
- ".NET Micro Framework". dotnetfoundation.org. .NET Foundation. Archived from the original on February 17, 2015. Retrieved February 17, 2015.
- ".NET Compiler Platform ("Roslyn")". dotnetfoundation.org. .NET Foundation. Archived from the original on November 13, 2014. Retrieved February 17, 2015.
- "ASP.NET 5". dotnetfoundation.org. .NET Foundation. Archived from the original on November 23, 2014. Retrieved February 17, 2015.
- "ASP.NET MVC, Web API and Web Pages (Razor)". dotnetfoundation.org. .NET Foundation. Archived from the original on February 17, 2015. Retrieved February 17, 2015.
- "ASP.NET Ajax Control Toolkit". dotnetfoundation.org. .NET Foundation. Archived from the original on February 17, 2015. Retrieved February 17, 2015.
- "ASP.NET SignalR". dotnetfoundation.org. .NET Foundation. Archived from the original on February 17, 2015. Retrieved February 17, 2015.
- "Entity Framework 6". dotnetfoundation.org. .NET Foundation. Archived from the original on February 17, 2015. Retrieved February 17, 2015.
- "NuGet". dotnetfoundation.org. .NET Foundation. Archived from the original on February 17, 2015. Retrieved February 17, 2015.
- "Announcing .NET 2015 Preview: A New Era for .NET". .NET Framework Blog. Microsoft. November 12, 2014. Archived from the original on February 28, 2015.
- "Microsoft .NET Framework Redistributable EULA". MSDN. Microsoft. Archived from the original on April 2, 2015. Retrieved February 28, 2015.
- jyri virkki (January 13, 2009). "Announcing Open Source Web Server". sun.com. Archived from the original on February 9, 2009. Retrieved April 23, 2012.
- "NETSCAPE ANNOUNCES PLANS TO MAKE NEXT-GENERATION COMMUNICATOR SOURCE CODE AVAILABLE FREE ON THE NET". Netscape Communications Corporation. January 22, 1998. Archived from the original on April 1, 2007. Retrieved August 8, 2013.
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
- "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. March 31, 1999. Archived from the original on March 26, 2014. Retrieved January 10, 2013.
[...]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.
- Linksys WRT54G and the GPL on lkml (Jun 7, 2003)
- The Open Source WRT54G Story Archived November 13, 2014, at the Wayback Machine By Aaron Weiss (November 8, 2005)
- Linksys Releases GPLed Code for WRT54G Archived November 29, 2014, at the Wayback Machine on slashdot (July 2003)
- Microsoft open sources PowerShell; brings it to Linux and OS X Archived August 18, 2016, at the Wayback Machine by Mary Jo Foley on zdnet.com (August 18, 2016)
- G. Andrew Stone, "Recreational Software Design's GameMaker product, released in 1994" Archived September 5, 2014, at the Wayback Machine
- "REBOL to become open source". Rebol.com. September 25, 2012. Archived from the original on December 3, 2013. Retrieved January 23, 2014.
- Sassenrath, Carl (December 12, 2012). "Comments on: R3 Source Code Released!". rebol.com. Archived from the original on August 19, 2014. Retrieved August 14, 2014.
You probably thought the source release would never happen? Am I right? Well, it's there now in github at github.com/rebol/rebol.
- "Ryzom is free software! What can we do from here?". Free Software Foundation. May 4, 2010. Archived from the original on July 18, 2015.
- "Ryzom source released as free software". LWN.net. May 6, 2010. Archived from the original on December 8, 2015.
- "Micropolis Downloads". Donhopkins.com. Archived from the original on April 14, 2012. Retrieved April 23, 2012.
- Proffitt, Brian (October 13, 2000). "StarOffice Code Released in Largest Open Source Project". linuxtoday.com. Archived from the original on October 16, 2013. Retrieved January 10, 2013.
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.
- "Star Ruler 2 is now Open Source!". Official discussion boards for Star Ruler 2 on Steam. July 22, 2018. Archived from the original on July 24, 2018. Retrieved July 24, 2018.
- Watcom Archived July 24, 2010, at the Wayback Machine on gnu.org
- Foley, Mary Jo (March 6, 2019). "Microsoft is open-sourcing Windows Calculator on GitHub". ZDNet. Retrieved March 10, 2019.
- Microsoft open-sources Live Writer, beloved but abandoned blogging tool Archived June 12, 2016, at the Wayback Machine by Peter Bright on Ars Technica "Opening the app means that it'll get some much-needed maintenance." (2015)
- Sun opens ZFS source code Archived June 28, 2016, at the Wayback Machine on Ars Technica by Ryan Paul (November 17, 2005)
- FAQ Archived January 3, 2016, at the Wayback Machine on open-zfs.org