List of commercial software with available source code

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This is a list of notable software which were originally developed as commercial (and/or proprietary) software product with the source now available (in contrast to software which is developed from the beginning as free and open source software). Most often sold and released originally without the source code (but not always), sometimes the source code becomes available later. Sometimes the source code is released under a liberal software license on end of life (Abandonware), sometimes it becomes available by other means, like leaking or reverse engineering.

While such software often becomes later open source software or public domain, also other constructs and software licenses exist, for instance shared source or creative commons licenses.[1][2] If the source code is given out without specified license or public domain waiver it has legally to be considered as still proprietary due to the Berne Convention.

For a list of video game software with available source code, see List of commercial video games with available source code. For specifically formerly proprietary software which is now free software, see List of formerly proprietary software.

List of formerly closed-source software
Title Original author Original release Source code availability OpenSource compatible Freeware (data and software) Complete Free software New license Notes
.NET Framework Microsoft 2002 2007/2014 Mostly Yes No 2007: Microsoft Reference Source License (FCL),[3] 2014: MIT license (core), Apache License 2.0, BSD license In 2007 the source code of the Framework Class Library of .NET was released under a Microsoft Reference Source License by Microsoft.[3] In November 2014, core parts of .NET were released under the permissive MIT license.[4][5] Miguel de Icaza announced that the released code will be merged into Mono.[6]
Adobe Flex Adobe 2004 2007 Yes Yes Yes MPL Since renamed to Apache Flex and changed to Apache License 2.0
Adventure Game Studio Chris Jones 1997 2011 Yes Yes Yes Artistic License v2 On 26 October 2010, Chris Jones released the source code for the editor under the terms of the Artistic License version 2.[7] On 27 April 2011, the runtime engine code was released under the same licence.[8] In 2015, community developers keep maintaining and improving the engine.[9]
AdvFS Hewlett-Packard 1990s June 2008 Yes Yes Yes GPL v2 On June 23, 2008 HP opened up AdvFS under GNU General Public License version 2 (instead of current version 3) at SourceForge in order to be compatible with the Linux kernel license.[10]
Andrew File System now OpenAFS Carnegie Mellon University / Transarc Corporation / IBM 1989 2000 Yes Yes Yes IBM Public License AFS was originally developed at Carnegie Mellon University, and developed as a commercial product by the Transarc Corporation, which was subsequently acquired by IBM. IBM announced on 15 August 2000 at LinuxWorld the release of AFS under the IBM Public License, which became OpenAFS.[11]
Allegiance (now FreeAllegiance) Microsoft Research 2000 2004 No Yes No Shared Source[12] Real-time strategy and Space combat simulator videogame released by Microsoft Research under a shared source license ("MSR-SSLA") 2004.[13]
Apache Derby IBM 1996 August 2004 Yes Yes Yes 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
Apple DOS Apple Inc. 1986 2015 No No No non-commercial license The Apple DOS source code was released by the Computer History Museum[14] after Paul Laughton, the creator of the code, donated it.[15]
ASP.NET Microsoft 2002 14 May 2013 Yes Yes Yes Apache License 2.0[16] released by Microsoft in 2013
Photoshop 1.0.1[17] Adobe Systems Inc. 1990 February 2013[18] No  ? No COMPUTER HISTORY MUSEUM SOFTWARE LICENSE (non-commercial license)[19] Adobe Systems Inc. made the source code of the 1990 version 1.0.1 of Photoshop available to the Computer History Museum. Includes all the code with the exception of the MacApp applications library which was licensed from Apple.
BDS C Compiler Leor Zolman 1979 2002 Yes Yes Yes Public domain Released by author
Bitkeeper BitMover Inc. 1998 2016 Yes Yes Yes Apache 2 On May 9, 2016 Bitkeeper became available under Apache 2 license for download on a github repository.[20]
Bitstream Vera (font) Bitstream Inc. Unknown 2003  ? Yes (non-commercial) No (can't be sold by itself) custom non-commercial Through the efforts of Bitstream and the GNOME Foundation
Blender Neo Geo / Not a Number Technologies / Ton Roosendaal 1996 2003 Yes Yes Yes GPL v2 Originally proprietary shareware software, it was open sourced in 2002 after a €100,000 crowdfunding campaign.[21][22][23][24]
Call to Power II Activision 2000 2003 No No No own non-commercial license[25] Source code was handed to the community to allow them self-support.[26][27]
CAS.CADE Matra Datavision 1990s 1999[28] Yes Yes Yes "Open Cascade Technology Public License" / since 6.7.0 LGPL 2.1[29]
C*Base 1980s 2003 Yes Yes Yes GPLv2
ChakraCore Microsoft 2009 2016 Yes Yes Yes MIT On January 13, 2016 Microsoft released ChakraCore under the MIT license on GitHub.[30] 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.[31]
Common Desktop Environment The Open Group 1993 2012 Yes Yes Yes LGPL v2+ [32][33]
CMU Sphinx Carnegie Mellon University/Kai-Fu Lee 2000 Yes Yes Yes BSD 3-clause [34][35]
CuneiForm Cognitive Technologies 1993 2008  ?  ?  ? BSD Optical character recognition software
CP/M Caldera 1974 2001[36] Yes Yes Yes "License Agreement CP/M"[37] In 2001 Caldera released CP/M's source code under an open source license, allowing redistribution and modification, via Tim Olmstead's "The Unofficial CP/M Web site".[36][37][38] In October 2014, to mark the 40th anniversary of the first presentation of CP/M, the Computer History Museum released early source code versions of CP/M.[39]
Deluxe Paint I (1986) Electronic Arts 1996 2003 No Yes No non-commercial license Source code of an early version released by Electronic Arts in 2015.[40]
Duke Nukem 3D 3D Realms 1996 2003 Yes No No GPLv2+ Game code only, no data, no engine.
Darwin (operating system) Apple Inc. 1999 1999 Yes Yes  ? Apple Public Source License
Doom id Software 1993 1997 Yes No No id software license[41]/later GPLv2+ Code only. Originally released under a restrictive license in 1997, in 1999 re-licensed under GPLv2.
DR-DOS/Caldera OpenDOS 7.01 Caldera (company) 1976 May 1997  ?  ?  ? CALDERA'S OPENDOS END-USER LICENSE AGREEMENT[42] The Caldera OpenDOS 7.01 source code was a base for the DR-DOS/OpenDOS Enhancement Project in 2002.[43]
DOS/32 DOS extender Narech Koumar 1996 2002 Yes Yes Yes Apache-like license In May 2002 DOS/32 Advanced DOS extender was released to the public by Narech Koumar including the latest binaries, documentation manuals and the source code under an Apache-like license allowing unrestricted, royalty-free distribution and use of the released materials in any software projects including commercial products.
DOS.MASTER Glen Bredon end 1980s 2000 Yes Yes Yes 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. It was written by Glen Bredon as a commercial program during the late 1980s where it experienced widespread success; it was released into the public domain by his family after the author's death.[44]
Etherpad Google 2008 2009 Yes Yes Yes Apache License 2.0 Open sourced after being purchased by Google
Free Download Manager (FDM) 2003 August 2007 Yes Yes Yes GPLv3[45] Free since version 2.5[46]
Gigablast Matt Wells 2000 2013 Yes Yes Yes Apache License The web search engine was started in 2000 by Matt Wells (former Infoseek) and the source code was released in 2013 under Apache license.[47]
Graphical Environment Manager (GEM) Caldera Thin Clients February 1985 April 1999 Yes Yes Yes GPLv2+ Caldera Thin Clients (later known as Lineo) released the source to GEM under the GNU General Public License (GPL) in April 1999. The development of GEM for PC is continued as OpenGEM and FreeGEM. It also has been ported to the Atari ST again to be used in the free TOS clone EmuTOS.
FAR Manager Eugene Roshal/Far Group October 1996 October 2007 Yes Yes Yes BSD revises Version 2.0 released as open source.
Gentium (font) SIL International 2002 2005 Yes Yes Yes OFL Through the efforts of SIL International
Helix (multimedia project)[48][49] RealNetworks 2002  ? Yes No RealNetworks Community Source License The Helix Community is an open collaborative effort to develop and extend the Helix DNA platform.[50]
Highcharts Highsoft 2009 2009 No No No non-commercial license, free for personal use[51][52] Source code is on github, but license is sold for non-personal commercial use.
HoverRace GrokkSoft 1996 2006  ? No No originally time limited license / later non-commercial GrokkSoft HoverRace SourceCode License.[53]
ICQ Mail.Ru Group 1996 2016 Yes Yes Yes Apache license In March 2016 the source code of the ICQ client was released under the Apache license released on github.com.[54][55]
Impulse Tracker Jeffrey "Pulse" Lim 1995[56] 2014 Yes Yes Yes BSD License[57] A Music tracker originally released by Jeffrey "Pulse" Lim in 1995 for MS-DOS. The software was distributed as freeware beside an advanced commercial version with extra features. After the commercial version was publicly pirated, the development ended with release April 8, 1999.[58] On December 25, 2014, the complete Impulse Tracker source code was added to a GitHub repository under the BSD license by the author.[59]
ILWIS ITC 1988 2007 Yes Yes Yes GPL Released as free and open-source software by ITC
Jump 'n Bump Brainchild Design 1998 1999  ? Yes No Emailware[60] Source code released under a emailware license.
id Tech 2 id Software 1997 2001 Yes Yes Yes GPL
id Tech 3 id Software 1999 2005 Yes Yes Yes GPL
id Tech 4 id Software 2004 2011 Yes Yes Yes GPL The released version is the source code to Doom 3; source code to newer id Tech 4 games has yes to be released. Changes to the code had to be made to avoid use of the patented Carmack's Reverse.
Java Sun Microsystems 1995 1998 No Yes No Sun Community Source License In 1998 Sun Microsystems released much of Java under the terms of the Sun Community Source License.[61]
Jumper 2.0 2007 2008 Yes Yes Yes GPL Publicly announced on 29 September 2008.[62]
Korn shell 1982 2000 Yes Yes Yes custom license; later CPL
LightZone Light Crafts 2005 2012 Yes Yes Yes 3-clause BSD Company went out of business
Linksys WRT54G series wireless router firmware (now OpenWRT) Linksys  ? 2003 Yes Yes Yes GPL As Linksys built the firmware for their WRT54G wireless router also from GPL'ed code,[63] they were required to make the source code available in July 2003.[64][65]
MacPaint Apple Inc. 1984 2010 No Yes No non-commercial license[66] MacPaint 1.3's source code (written in a combination of Assembly and Pascal) is available through the Computer History Museum, along with the QuickDraw source code.[67]
Marathon 2: Durandal Relic Entertainment 1995 2000 Yes No No GPL The code was released under the GPL while the data is still proprietary. Now known as Aleph One
MegaZeux Alexis Janson (Software Visions) 1994 1998 Yes Yes Yes GPLv2 MegaZeux is a game creation system (GCS) inspired by Tim Sweeney/Epic Megagames' classic shareware game ZZT. Both the code and the world files and music files are made freely available by Alexis Janson (Software Visions). Released around 1998 under GPL by Greg Janson.
MS-DOS 1.10 and 2.0 Microsoft 1982 2014 No Yes No MICROSOFT RESEARCH LICENSE (non-commercial license)[68] On 25 March 2014 Microsoft made the code to MS-DOS 1.10 and 2.0 available to the public under a Microsoft Research License for educational purposes.[69][70]
Microsoft Word for Windows version 1.1a Microsoft 1991 2014 No Yes No MICROSOFT RESEARCH LICENSE (non-commercial license) Microsoft made the source code of the 1991 version of Word available to the Computer History Museum and to the public for educational purposes.[68][71]
Miles Sound System (early DOS version called Audio Interface Library) John Miles 1991 2000 Yes Yes Yes Public domain Source code release of the AIL version 2 for DOS by John Miles into the public domain in 2000.[72][73]
MINIX Andrew Tanenbaum 1987 2000 Yes Yes Yes BSD 3-clause
Movable Type Weblog software October 2001 December 2007 Yes Yes Yes GPL By Weblog software
MySQL MySQL AB 1995 2000 Yes Yes Yes dual-licensing: GPL[74][75][76] / proprietary license[77]
NASTRAN NASA 1960 2001  ?  ?  ? own license In 2001 the NASA released with the "NASA Classics" package also the Finite Element Analysis simulator's source code to the public for fee.[78][79][80]
NCSA Mosaic 2.7 NCSA 1993 March 2010[81]  ? Yes  ? own license[82] first graphical browser
NetBeans 1997 October 2007 Yes Yes No GPL, CDDL An integrated development environment (IDE) for Java and other programming languages
Netscape Enterprise Server Sun Microsystems January 2009  ?  ? BSD Sun Microsystems open sourced it.[83]
Netscape Navigator/Communicator Netscape Communications 1994 1998 Yes Yes Yes MPL See Mozilla[84][85]
Open Sound System 4Front Technologies 1992 2007 Yes Yes Yes GPL, CDDL
PhysX Nvidia 2004 2015 No No No  ? (proprietary) At GDC 2015, Nvidia made the PhysX' source code available on GitHub, but requires registration on developer.nvidia.com and EULA signing.[86]
Pine (email client) 1989 1996  ?  ?  ? own license[87] Before 1996 under BSD license, it was switched to a proprietary license while still having the source code available.[88]
Performance Co-Pilot Ken McDonell and Mark Goodwin 1993 December 1999 Yes Yes Yes GPL, LGPL
Qt Trolltech 1991 1995 Yes Yes Yes FreeQT (1995), Q Public License (1999), GPLv2 (2000), LGPLv2.1 (2009),[89] LGPLv3 (2014)[90] First released as open source under the FreeQT license, then QPL. Later released as GPLv2. Qt 4.5 and later are released under the LGPLv2.1. Until 2005 the Windows version was only under proprietary license.
Quake id Software 1996 1999 Yes No No GPLv2 The map sources were also released under the GPL in 2006.
Rise of the Triad 3D Realms 1994 2002 Yes No No GPLv2 Only the code was released under the GPL.
Scilab INRIA and École nationale des ponts et chaussées Yes Yes Yes Scilab license[91] / later CeCILL Before v5 Scilab's source code was distributed under the non-commercial "scilab license".
Second Life client Linden Lab 2003 2007 Yes Yes Yes GPL v2 The client was released under GPLv2.
SimCity Don Hopkins 1989 2007 Yes Yes Yes GPL v3 Free version released as 'Micropolis' [92]
Solaris Sun Microsystems 1989 2005 Yes Yes Yes CDDL Free version released as OpenSolaris.[93]
StarOffice Sun Microsystems 1986 2000 Yes Yes Yes LGPL/SISSL[94] Free version released as OpenOffice.org, now released only under the LGPL. (OpenOffice.org has since been forked into LibreOffice, which is also under the LGPL and has largely displaced OpenOffice.org.) StarOffice is still released separately under a proprietary license, using mostly the same code; Sun requires all contributors to the main OpenOffice.org project assign joint copyright to Sun.
Stellar Frontier Stardock 1997 2008[95] No Yes No STARDOCK SHARED SOURCE STELLAR FRONTIER LICENSE (non-commercial license)[96] Stellar Frontier is a multiplayer space strategy/shooter game made by Doug Hendrix in 1995 and published by Stardock. Stardock closed the master server on 4 August 2006, ceasing official support for multiplayer mode but released the source code under a shared source license in 2008.
Symbian Nokia 1997 (as Psion EPOC32)[97] 2010[98][99] Yes Yes No EPL / Nokia Symbian License[100]
Synfig Robert Quattlebaum 2001 2005 Yes Yes Yes GPL Some more information is available on the Synfig.[101]
TensorFlow Google  ? 2015 Yes Yes Yes Apache license 2.0 TensorFlow was originally developed by the Google Brain team for Google's research and production purposes and later released under the Apache 2.0 open source license on November 9, 2015.[102][103]
Technicolor TC72xx chipset cable modem firmware/eCos Technicolor 2008 2015 Yes Yes  ? GPLv2, lGPL, eCos 2.0 license[104] Released on GitHub on 30. November 2015.[105][106]
Tesseract OCR HP and UNLV 1985 2005 Yes Yes Yes Apache License 2.0 Released as free and open-source software by HP and UNLV
TextMate 2 MacroMates 2004 2012[107] Yes No Yes GPL v3 In August 2012, TextMate 2’s source code was published on GitHub under the terms of the GPLv3.[108] It remains a commercial product and users are required to purchase a license from Macromates.[109] Odgaard stated he prefers receiving patches as public domain as this preserves his ability to release a future version under a more permissive license, or to make a version available on the Mac App Store.[110][111]
Toonz Digital Video S.p.a. 1993 2016 Yes Yes Yes BSD license On March 19, 2016 it was announced that Toonz will be released as Free and open source software on March 26, 2016.[112] It was released under BSD license to github.[113]
Torque 3D Dynamix 2001 2012 Yes Yes Yes MIT License Developed for Tribes 2. Released as free and open-source software by Dynamix.
TurboCASH Pink Software April 1985 July 2003 Yes Yes Yes GPL
Turbo Vision Borland 1990 1997 Yes Yes Yes Public domain software Around 1997, the C++ source code was released by Borland into the public domain.[114][115] It is developed by the open-source community under a GPL license and a BSD license branch.
v7 Unix Caldera International 1979 2002 Yes Yes Yes BSD-like license In 2002, Caldera International released[116] V7 Unix as FOSS under a permissive BSD-like software license.[117][118][119]
Unrar Rarlabs 1995 2000 No Yes No own unrar license[120] Unrar source code was released by Eugene Roshal/RARlabs sometime in 2000. A GPL fork of older codebase exists.[121]
Warzone 2100 Pumpkin Studios/Eidos Interactive March 1999 December 2004 Yes Yes (only movies not)[122] Yes (GPL2+, only movies not)[122] GPLv2 Video game by Eidos Interactive
Watcom C compiler Watcom 1988 2003 Yes Yes No Sybase Open Watcom Public License Released as Open Watcom, under a license which is considered free by the OSI[123] but not by the FSF. The FSF has problems with the license as it demands more freedom than the GPL by requiring the release of source code also in the case of private use.[124]
WebOS Hewlett-Packard 2009 2012 Yes Yes Yes Apache license Written originally in 2009 by Palm, in December 2011 HP announced it would release the WebOS source code in the near future under an open-source license.[125] In August 2012, code specific to the existing devices was released as WebOS Community Edition (CE), with support for the existing HP hardware.[126]
Xerox Alto Computer History Museum 1975 2014 No Yes No own non-commercial license On 21 October 2014, Xerox Alto's source code and other resources were released from the Computer History Museum.[127]
XMind XMind Ltd. 2007 2008 Yes Yes Yes Eclipse Public License and LGPL Mindmapping software based on the Eclipse RCP
ZFS Sun Microsystems 200? 2005 Yes Yes Yes CDDL The innovative next-generation file system was released by Sun Microsystems under an open-source license in 2005.[128] Due to the license incompatibility of the GPL with the CDDL it can't be directly integrated in linux, but in the BSDs or MacOS due to their permissive licensed kernel. After the later owner Oracle didn't released after version 28, the community forked to OpenZFS.[129]

See also

References

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