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Code licenses: MIT
Code repositories: sharkwouter/oceanpop.git(since 2020, )
Build system: CMake
Developers: ProTheory8, Wouter Wijsman

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Code licenses: MIT
Code repositories: git.code.sf.net/p/ogrian/code
Developers: Jeremiah D. Powell, Mike Prosser, Wh-

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Code licenses: GPL-3.0
Code repositories: hg.code.sf.net/p/osrpgcreation/code
Code dependencies: CEGUI, OGRE
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Developers: AleXXandEr, Kai SD, kornerr, kornerrjenkins, Opensource Game Studio, xmorph

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Code licenses: GPL-3.0
Code repositories: DusteDdk/osgg.git(since 2012, ), osgames/osgg.git @add(since 2019, ), svn.code.sf.net/p/osgg/code
Code dependencies: OpenGL, SDL
Assets licenses: Artistic license-1.0
Build system: Make
Developers: Dmitry Marakasov, Jimmy, Jimmy Christensen

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Code licenses: AGPL-3.0
Code repositories: movitto/omega.git(since 2009, )
Assets licenses: CC BY-SA, Public domain, GPL
Developers: Mo Morsi, Mohammed Morsi, Nicolas Satragno, Nina Satragno

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Code licenses: GPL-2.0
Code repositories: sulix/omnispeak.git(since 2012, )
Build system: Make
Developers: David Gow, Martin Fiedler, NY00123, owenmpierce, Szilárd Biró

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Code licenses: Public domain
Code repositories: jasonrohrer/OneLife.git(since 2017, )
Assets licenses: Public domain
Developers: Jason Rohrer, Justin Love

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Code licenses: GPL-2.0
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Developer: Olli Etuaho

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Code licenses: GPL-3.0
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Code licenses: GPL-2.0
Code repositories: svn.code.sf.net/p/lgames/code
Developer: Michael Speck

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Code licenses: GPL-2.0
Code repositories: OoliteProject/oolite.git(since 2013, )
Code dependencies: Cocoa, SDL
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AnotherCommander, cim, cube, DaymareOn, Eric Walch, Jens Ayton, jobi-wan, Kaks, Kevin Anthoney, Konstantinos Sykas, Nick Rogers, phkb

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Code licenses: MIT
Code repositories: OpenApoc/OpenApoc.git(since 2014, )
Code dependencies: SDL2
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5thAvenue, Alexey Rogachevskiy, Andrey Isakov, Code., Daniel, dl471, emptyVoid, FilmBoy84, Francisco Altoe, Istrebitel, Ivan Shibanov, Jacob Deuchar, Jari, Jonathan Hamilton, Kai Dölger, Kirill Mishustin, Kurtsley, Luis Camara, makus82, Marq Watkin, Martin Červenka, Max, Pavel Antokolsky, redv, ShadowDancer, SiemensSchuckert, Silviu Ghita, sparkstar, Steve Schnepp, Stewart Matheson, Vasiliy Panasenko, Xracer

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Code licenses: MIT
Code repositories: GunshipPenguin/open_flood.git(since 2016, )
Build system: Gradle
Developer: Rhys Rustad-Elliott

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Code licenses: GPL-3.0
Code repositories: OpenFodder/openfodder.git(since 2012, )
Developers: drnovice, Robert Crossfield

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Code licenses: CC-BY-NC-SA-4.0, Custom
Code repositories: KaidemonLP/Open-Fortress-Source.git, svn.openfortress.fun/svn/open_fortress
Code dependencies: Source SDK

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Code licenses: GPL-2.0
Code repositories: atroel/open-greedy.git(since 2014, )
Code dependencies: SDL2
Developer: atroel

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Code licenses: AFL-3.0
Code repositories: vittorioromeo/SSVOpenHexagon.git(since 2012, )

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AlphaPromethium, Bauumm, byte-chan™, IvoryDuke, kiwec, Matija Skala, Mischa Alff, Oliver Jõgar, Ricky Cui, Synth Morxemplum, treier57lol, Vittorio Romeo, Wolf Clément, Zly

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Code licenses: MIT
Code repositories: undefined-darkness/open-horizon.git(since 2014, )
Code dependencies: nya-engine
Developer: undefined-darkness

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Code licenses: LGPL-3.0
Code repositories: akarnokd/open-ig.git(since 2015, )
Developers: David Karnok, Péter Kovács, Robikz, Zoltan

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Code licenses: GPL-2.0
Code repositories: git.code.sf.net/p/opengate/code
Developers: Christoph Brill, Daniel S., spom_spom

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Code licenses: MIT
Code repositories: ssenegas/kickoff.git(since 2016, )
Build system: Gradle
Developer: Sébastien Sénégas

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Code licenses: Custom
Code repositories: openlegend/core-rules.git(since 2014, )
Developers: Brian Feister, Cryogenic, Fabio Endrizzi, Great Mustache Jonathan, istabosz, Mario Lurig, Matthew O'Connor, Michael Loubier, R.J. Wood

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Code licenses: GPL-2.0
Code repositories: OpenMeridian/Meridian59.git(since 2013, )

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Adrien Laws, Andrew Chrapko, Ashton, broodhill, Clint Banzhaf, Daenks, FSU-Phil, M59Gar, M59Khan, Mark Sturm, Matthew Trey, Meridian59, Morbus, PKChrisChan, Roy, Sarevok, siwithaneye, skittles1, theanax, tsShergill, xFirekatx

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Code licenses: GPL-2.0
Code repositories: nicupavel/openpanzer.git(since 2012, )
Developers: Iulian Luca, Nicu Pavel

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Code licenses: GPL-2.0
Code repositories: osgames/openquartz.git(since 2019, ), openquartz.cvs.sourceforge.net
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Build system: Make
Developers: Bill Currie, Charles Galbraith, David Costanzo, Gargoylol, Mapes, Seth Galbraith, Toddd

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Code licenses: GPL-3.0
Code repositories: svn.uktrainsim.com/svn/openrails

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Code licenses: MIT
Code repositories: pierreyoda/o2r.git(since 2017, ), svn.code.sf.net/p/o2r/code
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Developers: Pierre, Pierre-Yves

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Code licenses: AGPL-3.0
Code repositories: open-runescape-classic/core.git(since 2020, ), open-runescape-classic/single-player.git @add(since 2020, ), Open-RSC/Core-Framework.git(since 2018, )
Build system: Gradle

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Aenge, aldrichdev, BeastFable, Bl0ds, Brian Foster, Chris, Cleako, Dan G, Daniel Loth, Fefect, Hubcapp, ipkpjersi, James Wallen-Jones, Kenix3, Kepler, kevincmanning, Luis, Luis Salazar, Marwolf, ornox, Paul Aldrich, Payton, Preston Smith, rsc-g15, Ryan Trujillo, Tessalicious, xjoe28, Yumeko Margatroid, Zachariah Knight

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Code licenses: 3-clause BSD
Code repositories: opensim/opensim.git(since 2009, )
Code dependencies: MonoGame
Assets licenses: ?

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3di, Adam Frisby, Adam Ivie, Adam Johnson, AdilElFarissi, Ai Austin, AlexRa, Alicia Raven, BlueWall (James Hughes), Christian.K.72, dahliaT, Dan Lake, David Rowe, Diva Canto, Fernando Oliveira, Fly Man, Geir Nøklebye, genkii, Homer Horwitz, Jak Daniels, jeff-kelley, John Hurliman, Jonathan Freedman, kcozens, kunnis, Latif Khalifa, lbsa71, Magnuz Binder, Marck00, Matthew Beardmore, Melanie Thielker, Mic Bowman, Michael Cerquoni, Michael Cortez, Mike Mazur, MW, opensim-mirror, Oren Hurvitz, Robert, Robert Adams, Sean Dague, Sean McNamara, SignpostMarv, Snoopy Pfeffer, speedlimits, szielins, Tedd, Teravus, Tom the Dragon, TomMeta, Ubit Umarov, ¡Cinder! ㊝

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Code licenses: GPL-3.0
Code repositories: dmecke/OpenSoccerStar.git(since 2014, )
Developer: Daniel Mecke

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Code licenses: GPL-3.0
Code repositories: alemart/opensurge.git(since 2018, ), svn.code.sf.net/p/opensnc/code
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Build system: CMake

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Alexandre Almeida, Alexandre Martins, Arthur Blot, Christian Zigotzky, Christopher Martinus, Francesco, Halatnikov, Reimund Renner, SecularSteve, Stilic, Stylix58, Szymon Weihs, Tomires

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Code licenses: ?
Developer: Mathew Velasquez

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Code licenses: GPL-2.0
Code repositories: opentibia/server.git(archived, since 2012, ), opentibia/yatc.git @add(since 2012, )
Build system: CMake

Developers: (48)

13r, adakraz, Alexandre Severino, Anstice, Arkold Thos, Artur Pacan, assassina, Assassina Mutante, Axel, Daniel Antunes, Dennis, Eduardo Bart, Elf, fike, Gilfar, GriZzm0, Haktivex, Hampus Joakim Borgos, Hampus Joakim Nilsson, Heliton, Ivan Vučica, jakexblaster (Marcos Cunha), Jiddo, johannesrosenqvist, johnny8020, Konrad Kuśnierz, Luis Hernandez, Mark Samman, mips, Nate Fries, OsoSangre, pedro_b, Piotr Walaszczyk, Rafael Hamdan, Rafał Wrzeszcz, Remere, René Mujica Moreau, Ricochet, Roberto, Simone, smyg, Sorcuring, Stefan Maier, Sven Matner, Thomaz Yuji, Thomaz Yuji Babá, Vitor, Winghawk

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Code licenses: CC-BY-NC-SA-4.0
Code repositories: gitea.it/rixty/OpenValley.git
Code dependencies: SDL2, Flare engine

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Code licenses: GPL-2.0
Code repositories: git.code.sf.net/p/openyahtzee/code, osgames/openyahtzee.git @add(since 2019, )
Developers: Guy Rutenberg, Journeyman, smcgill

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Code languages: C, C++
Code licenses: zlib
Code repositories: openzelda/openzelda-source.git(since 2015, )
Assets licenses: proprietary, CC-BY-NC-SA-3.0, CC-BY-SA-2.5

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Code licenses: GPL-3.0
Code repositories: r1sc/Open76.git(since 2017, )
Code dependencies: Unity
Developers: Johan Rensenbrink, r1sc

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Code licenses: GPL-2.0
Code repositories: svn.code.sf.net/p/openalchemist/code
Code dependencies: ClanLib
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Developers: Antoine Morineau, Gecko667, guigoz, Guillaume Delhumeau, MrPouit, silkut

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Code licenses: GPL-3.0
Code repositories: Mige5/openarena.git(since 2022, )

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Code licenses: GPL-2.0
Code repositories: OpenArena/engine.git(since 2014, ), suijingfeng/vkOpenArena.git @add(since 2018, )

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Anthony Pesch, Ensiform, hairball, Jack Slater, James Canete, Jeremiah Sypult, leilei-, Ludwig Nussel, Poul Sander, Richard Allen, Ryan C. Gordon, Sui Jingfeng, Thilo Schulz, Tim Angus, Tony White, Zack Middleton, zturtleman

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Code licenses: GPL-3.0
Code repositories: OpenAWE-Project/OpenAWE.git(since 2021, )
Build system: CMake
Developers: Max Black, Patrick Dworski

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Code languages: Go
Code licenses: MIT
Code repositories: OpenBiohazard2/OpenBiohazard2.git(since 2020, )
Developer: Samuel Yuan

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Code languages: C, C++
Code licenses: GPL-3.0
Code repositories: openblack/openblack.git(since 2018, )
Code dependencies: OpenGL, SDL2
Build system: CMake
Developers: FalseIlyu, Matt, Matt Stevens, Michał Janiszewski, NeroBurner, raffclar, Sandy

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Code languages: C++
Code licenses: GPL-3.0
Code repositories: mmatyas/openblok.git(since 2016, )
Build system: CMake
Developers: Mátyás Mustoha, Wouter Wijsman

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Code languages: Python, Lua
Code licenses: GPL-3.0
Code repositories: hg.code.sf.net/p/openblox/openblox, osgames/openblox.git @add(since 2019, ), hg.code.sf.net/p/openblox/bloxstaller
Code dependencies: Panda3D, wxPython
Assets licenses: CC-BY-SA-3.0
Developers: Alfredzo Nash, Bednesti, brutustodd, Chris Bradley, DangerOnTheRanger, Danny Green, Oliver Frye, TheEnd

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Code languages: C#
Code licenses: GPL-3.0
Code repositories: WickedPeanuts/OpenBound.git(since 2020, )
Build system: VisualStudio
Developer: Carlos H. M. S.

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Code languages: C#
Code licenses: Public domain
Code repositories: leezer3/OpenBVE.git(since 2015, )
Developers: BX Zhang, Christopher Lees, Connor Fitzgerald, Jakub Vaněk, LX862, Marc Riera, Maurizio M. Gavioli, Nemo, s520

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Code licenses: GPL-2.0
Code repositories: osgames/opencity.git(since 2019, ), svn.code.sf.net/p/opencity/code, opencity.cvs.sourceforge.net
Developers: Duong Khang NGUYEN, frodrigo

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Code licenses: GPL-3.0
Code repositories: pjasicek/OpenClaw.git(since 2017, )
Code dependencies: Box2D, SDL
Build system: CMake
Developers: Bakasura, Denis Papec, Dmitrii Dementev, Pavel Löbl, Petr Jašíček

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Code licenses: ISC
Code repositories: openclonk/openclonk.git(since 2013, )
Build system: CMake

Developers: (28)

Armin, Armin Burgmeier, Armin S., Armin Scheurens, Benjamin Herr, boni, ckanibal, David Dormagen, Ewan Mellor, Fabian Pietsch, Felix Wagner, Frieslover69, Fulgen301, gitMarky, isilkor, jcaesar, Kevin Zheng, Linus Heckemann, Lukas Werling, Maikel de Vries, Meowtimer, Peter Wortmann, Philipp Kern, Sven, Tobias Zwick, Tushar Maheshwari, Urschel, win3981

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Code licenses: MIT
Code repositories: gurka/OpenCrystalCaves.git(since 2017, )
Developers: Cong, Simon Sandström

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Code licenses: GPL-3.0
Code repositories: eezstreet/OpenD2.git(since 2017, )
Build system: CMake
Developer: Nick

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Code licenses: GPL-2.0
Code repositories: volca02/openDarkEngine.git(since 2014, )
Build system: CMake
Developers: Gorbeh, volca02

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Code languages: C++
Code licenses: GPL-3.0
Code repositories: kcat/opendf.git(since 2015, )
Build system: CMake
Developers: Cornee Traas, kcat

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Code languages: Go
Code licenses: GPL-3.0
Code repositories: OpenDiablo2/OpenDiablo2.git(archived, since 2018, )

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Alex Yatskov, Alexei Yatskov, AndrejMijic, Brendan Porter, danhale-git, David Carrell, Diego M., gravestench, Gürkan Kaymak, Huw Griffiths, Intyre, juander-ux, Julien Ganichot, Kacper Drobny, leahiel, liberodark, M.Sz., Matheus Cardoso, Maxime Lavigne (malavv), ndechiara, nicholas-eden, Panagiotis Georgiadis, presiyan-ivanov, Robin, S. Herring, Thomas Christlieb, Tim Sarbin, Will, Ziemas

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Code languages: PHP
Code licenses: AGPL-3.0
Code repositories: OpenDominion/OpenDominion.git(since 2015, )
Code dependencies: Laravel

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barmmie, Christopher Smith, Cody Kinsey, Guilherme Portela, Gustavo Straube, Jake, James Hodgson, John Strömblom, Kender2, MJBrennan, Ope Aina, WaveHack

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Code licenses: GPL-3.0
Code repositories: rofl0r/openDOW.git(since 2013, )
Build system: Make
Developer: rofl0r

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Code languages: C#
Code licenses: GPL-3.0
Code repositories: drogoganor/OpenDR.git(since 2018, )
Code dependencies: OpenRA
Developers: abcdefg30, David Wilson, Matthias Mailänder, Paul Chote, phrohdoh

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Code licenses: GPL-3.0
Code repositories: Zalasus/opendrakan.git(since 2018, )
Build system: CMake
Developers: BuXXe, Markus Jylhänkangas, Zalasus

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Code licenses: GPL-2.0
Code repositories: OpenDUNE/OpenDUNE.git(since 2012, )
Developers: drnovice, glx22, KO Myung-Hun, Loïc Guilloux, Máximo Castañeda, Olaf van der Spek, Patric Stout, Thomas BERNARD, wangds, Xaroth

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Code licenses: GPL-3.0
Code repositories: OpenDungeons/OpenDungeons.git(since 2014, )

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4562448, Bebere, BorQube, Danimal696, David CARLIER, hwoarangmy, Ian T. Jacobsen, oyvindln, Pavel Rojtberg, Rémi Verschelde, tomluchowski, Yohann Ferreira

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Code licenses: GPL-3.0
Code repositories: opene2140/opene2140.git(since 2020, )
Build system: CMake

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Code licenses: LGPL-3.0
Code repositories: OpenEnroth/OpenEnroth.git(since 2016, )
Build system: CMake

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Aleksey Komarov, Alex, Alexander Izmailov, Baste Nesse Buanes, botanicvelious, captainurist, Eksekk, Konstantin Kuzov, Nik-RE-dev, pskelton, Yury Klushin, zippanto

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Code languages: JavaScript, Rust
Code licenses: MIT
Code repositories: serprex/openEtG.git(since 2013, )
Developers: elysiumplain, Philip Dubé, Trevor Sayre, Wesley M. Botello-Smith

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Code languages: C
Code licenses: MIT
Code repositories: Last-Minute-Creations/openFire.git(since 2016, )
Developer: KaiN

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Code languages: C
Code licenses: GPL-2.0
Code dependencies: SDL

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Code languages: C
Code licenses: MIT
Code repositories: MotoLegacy/OpenFNaF.git(since 2019, )
Code dependencies: SFML
Developers: cypress, darkhaven3, Ian

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Code languages: C++
Code licenses: GPL-2.0

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Code languages: C, C++
Code licenses: GPL-3.0
Code repositories: capnramses/opengl_test_drive_clone.git(archived, since 2014, )
Code dependencies: OpenGL
Developer: Anton Gerdelan

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Code languages: C++
Code licenses: GPL-2.0
Code repositories: git.code.sf.net/p/snowstorm/git, osgames/snowstorm.git @add(since 2019, )
Code dependencies: SDL
Developers: Jonny D, Sean Ford, Zardus

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Code languages: Lisp, C++
Code licenses: ISC
Code repositories: open-goal/jak-project.git(since 2020, )
Build system: CMake

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animalstyletaco, blahpy, BreakPoints, Brent Hickey, Ethan Lafrenais, Fabian Bergström, Hat Kid, Luminar Light, ManDude, Matt Dallmeyer, OpenGOAL Bot, shay, Tyler Wilding, water111, ZedB0T, Ziemas

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Code languages: C, C++
Code licenses: GPL-3.0
Code repositories: Mandarancio/OpenGOO.git(since 2011, )
Code dependencies: Qt
Build system: QMake
Developers: Adam Mizerski, Dmitry Batarov, Fabrizio Signoretti, Marco Torsello, Martino Ferrari, Oleksiy Slyshyk

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Code languages: C++
Code licenses: Custom
Code repositories: madebr/OpenGTA.git(since 2015, )

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Code languages: C++
Code licenses: GPL-3.0
Code repositories: osgames/openhomm.git(since 2019, ), code.launchpad.net/openhomm
Code dependencies: Qt, SDL
Build system: QMake
Developers: crackedmind, Ice

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Code languages: C, C++
Code licenses: GPL-3.0
Code repositories: TalonBraveInfo/OpenHoW.git(archived, since 2017, )
Code dependencies: OpenAL, SDL2
Build system: CMake
Developers: Bonerlord, Daniel Collins, DummkopfOfHachtenduden, Mark Sowden, Stefano

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Code languages: C#, Lua
Code licenses: GPL-3.0
Code repositories: OpenHV/OpenHV.git(since 2019, )
Code dependencies: OpenRA
Assets licenses: CC-BY-3.0, CC-BY-SA-4.0
Build system: Make, msbuild
Developers: dnqbob, Dzierzan, Matthias Mailänder, Paweł Dzierżanowski, SeanScherer, William Weber Berrutti, Zimmermann Gyula

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Code languages: C, C++
Code licenses: MIT
Code repositories: openitg/openitg.git(archived, since 2011, )
Build system: Autoconf
Developers: August Gustavsson, Carl Myers, DataBeaver, Kate Gray, Mikko Rasa, mooinglemur, spigwitmer, Toni Spets, vyhd

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Code languages: C++
Code licenses: GPL-2.0
Code repositories: AlisterT/openjazz.git(since 2014, )
Code dependencies: SDL
Build system: Make
Developers: AlisterT, Carsten Teibes, Fabian Greffrath, Mike Purvis, Przemysław Buczkowski, Scott, StanB123

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Code languages: C
Code licenses: ISC
Code repositories: shinyquagsire23/OpenJKDF2.git(since 2018, )
Build system: CMake
Developers: Anno, Max Thomas, Strike

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Code languages: C#
Code licenses: GPL-3.0
Code repositories: IceReaper/OpenKrush.git(since 2018, )
Code dependencies: OpenRA
Developers: abcdefg30, Andre Mohren, Dzierzan, Paul Chote, Paweł Dzierżanowski, phrohdoh, taryn

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Code languages: C++, C
Code licenses: 2-clause BSD
Code repositories: XProger/OpenLara.git(since 2016, )
Code dependencies: WebGL

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Gh0stBlade, laripette, Leo-89, Manuel Alfayate Corchete, Pablo Maiolo, Saracen, SaracenOne, Timur Gagiev, Torsten Kammer, vaguerant, vanfanel2

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Code languages: C++, C
Code licenses: Custom
Code repositories: gliptic/liero.git(since 2014, )
Code dependencies: SDL
Developers: Anders Höckersten, gliptic

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Code languages: C++
Code licenses: LGPL-2.0
Code repositories: albertz/openlierox.git(since 2011, ), git.code.sf.net/p/openlierox/code
Build system: CMake
Developers: Albert Zeyer, Karel Petránek, lxkurko, Martin Erik Werner, Olof Larsson, Sergii Pylypenko, yuri

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Code languages: C++
Code licenses: MIT
Code repositories: OpenLoco/OpenLoco.git(since 2018, )
Build system: CMake

Developers: (23)

Aaron van Geffen, Benjamin Sutas, ceeac, David Schoemehl, Duncan, GalBr, Justin Gottula, Kane, Leslie Yip, Marijn van der Werf, Matt, Matthias Moninger, memellis, Michael Steenbeek, Michał Janiszewski, Peter Gaal, Reinaldo Antonio Camargo Rauch, Richard Jenkins, Svelbeard, Ted John, TELK, Zcooger, ζeh Matt

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Code languages: C++
Code licenses: GPL-3.0
Code repositories: OpenMC2/OpenMC2.git(since 2016, )
Developers: Duncan, LRFLEW

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Code languages: C, C++
Code licenses: GPL-2.0
Code repositories: openmoh/openmohaa.git(since 2015, )
Developers: pryon, RyBack, smallmodel

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Code languages: C, C++
Code licenses: GPL-3.0
Code repositories: Jakz/openmom.git(since 2014, )
Code dependencies: SDL2
Build system: CMake
Developer: Jacopo Santoni

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Code languages: Python
Code licenses: GPL-2.0
Code repositories: pjotrligthart/openmoo2-hg-mirror.git(since 2015, )
Code dependencies: pygame
Build system: setup.py
Developer: II9T5

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Code languages: C++, Perl
Code licenses: GPL-2.0
Code repositories: osgames/openmortal.git(since 2019, ), openmortal.cvs.sourceforge.net
Build system: Make
Developers: arvind, Gabor Sebestyen, Kami, openmortaldev, UPi

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Code languages: C++
Code licenses: GPL-2.0
Code repositories: openMSX/openMSX.git(since 2015, ), git.code.sf.net/p/openmsx/openmsx, svn.code.sf.net/p/openmsx/code
Build system: Meson

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Albert Beevendorp, Alex Wulms, Arnold Metselaar, boukichi, Cacodemon345, D15C0DE, David Heremans, Edwin, Eric Boon, Filip H.F. "FiXato" Slagter, Herman Oudejans, Joost Yervante Damad, Laurens Holst, Maarten ter Huurne, Manuel Bilderbeek, Max Feingold, Patrick van Arkel, Pedro de Medeiros, peterhanraets, Reikan, retrocomputacion, Sandy Pleyte, sdsnatcher73, Sean Young, Wouter Vermaelen

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Code languages: Kotlin, Java
Code licenses: GPL-3.0
Code repositories: xyzz/openmw-android.git(archived, since 2018, )
Build system: Gradle
Developers: Bret Curtis, Licaon_Kter, sandstranger, xyzz

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Code languages: C#, Lua
Code licenses: MIT
Code repositories: OpenNefia/OpenNefia.git(since 2021, ), Ruin0x11/OpenNefia.git
Build system: VisualStudio
Developers: kekobleibtkeko, Ruin0x11, zhguyu

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Code languages: C#
Code licenses: GPL-3.0
Code repositories: BBQGiraffe/OpenNitemare3D.git(since 2019, )
Build system: VisualStudio
Developer: BBQGiraffe

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Code languages: C++
Code licenses: GPL-3.0
Code repositories: verhoevenv/OpenNotrium.git(since 2014, )
Code dependencies: SDL2
Developers: Eduardo Pinho, Vincent Verhoeven

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Code languages: C, Go
Code licenses: GPL-3.0
Code repositories: noxworld-dev/opennox.git(since 2019, )
Build system: Make
Developers: angrykirc, Anton, Denys Smirnov, Evengard, Jeong, Heon, paperjack93

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Code languages: C, C++
Code licenses: MIT
Code repositories: omf2097/openomf.git(since 2013, )
Build system: CMake
Developers: Alexander Weps, Andreas Gnau, Andrew Thompson, animehunter, Giuseppe Deda, Martti Rannanjärvi, Snafulator, TheOnlyJoey, Tuomas Virtanen

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Code languages: C#
Code licenses: GPL-3.0
Code repositories: OpenRA/OpenRA.git(since 2010, )

Developers: (132)

abc013, abcdefg30, abmyii, Adam Mitchell, Alexander Fast, alexander-boll, Alexandre Oliveira, Alexis Hunt, Alfredo Brandau, Alli, Andre Mohren, Andrew Odintsov, anvilvapre, AoAGeneral, Arular101, atimoschenkow, atlimit8, BGluth, blackhand1001, Booom3, Braxton Williams, Carko, CH4Code, Chris Forbes, Christopher Grant, clemty, Clément Bœsch, Cody Brittain, Curtis Shmyr, Daniel Hernandez, Danny Keary, darkademic, David Jiménez, David Wilson, DeadlySurprise, Deniz, Dmitri Suvorov, dnqbob, DSUK, earthpig, Eduardo Cáceres, epicelite, evgeniysergeev, forcecore, fruestueck, Glenn Martin Jensen, GSonderling, Gustas, Heli Aldridge, Hellhake, HenrytheSlav, Ian T. Jacobsen, Igor Popov, Inq8, Ivaylo Draganov, Jacob Dufault, Jan Beich, John Turner, Jonas A. Lind, Jonathan Ling, JovialFeline, jrb0001, jsd1982, Kanar, Kenny Hoxworth, Kevin, Kyrylo Silin, ltem, Markus Hartung, Matija Hustić, matija-hustic, Matthias Mailänder, MatthijsBenschop, Max Ugrumov, michaeldgg2, Micr0Bit, Moritz M., MorMund, Moviuro, Mustafa Alperen Seki, mvdhout1992, N.N,>, Nah, Neth, Nikolay Fomin, NJ, Oliver Brakmann, OmegaBolt, Orb370, Paolo Chiodi, Paul Chote, Paul van Tilburg, Pavel Penev, Pavlos Touboulidis, Peter Antal, Peter Evers, phrohdoh, Pi Delport, pizzaoverhead, psydev, r0b0v, r34ch, Raymond Bedrossian, raz, reaperrr, Remco, Robert Rouhani, RoosterDragon, s1w_, Sam, Scott, sinf, Smittytron, SteelPhase, taryn, teees, teinarss, TheChosenEvilOne, Thijs Waalen, Thomas Christlieb, Tim M, Tinne M., tovl, Trevor Nichols, Tyson Liddell, UberWaffe, Unrud, Wojciech Walaszek, xan2622, yesfish, ytinasni, Zimmermann Gyula

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Code languages: C, C++
Code licenses: GPL-2.0
Code repositories: xythobuz/OpenRaider.git(since 2013, ), openraider.cvs.sourceforge.net
Code dependencies: OpenAL, OpenGL, SDL2
Build system: CMake
Developers: Carsten Teibes, Terry 'Mongoose' Hendrix II, Thomas Buck

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Code languages: C++
Code licenses: GPL-3.0
Code repositories: OpenRCT2/OpenRCT2.git(since 2014, )
Build system: CMake

Developers: (220)

73, A,N., A.N, Aaron van Geffen, Adam, Adam Bloom, Adrian Wielgosik, Albert Morgese, Alexander Overvoorde, Andrew, Andy Ford, annoyingdroid, anyc, Aram Kazorian, atmaxinger, AuraSpecs, aw20368, Basssiiie, Ben Johnston, Ben Pye, blackhand1001, Breno Rodrigues Guimarães, Bryan DiLaura, camthesaxman, ceeac, Chanwoong Kim, Chaosmeister, Charles Machalow, Cheetos420, Christian F. Coors, Christian Murphy, Christian Schubert, Cody Jung, Conrad Kostecki, Cory Sanin, Craig Craig, Craig Ward, CraigCraig, Daan de Heij, danidoedel, Daniel Kamil Kozar, Daniel Karandikar, Daniel Trujillo Viedma, Daniël Heres, Dennis Devriendt, Dennis-Z, dennis-z, deurklink, Dom Light, Duncan, DutchRPW, Dániel Tar, Fruitsalad, frutiemax, frutiemax92, Gabriel Guedes, GalBr, GD Park, Gericom, GingerAdonis, Graham Edgecombe, Harry Hopkinson, Harry Lam, Haven Kim, Helio Nunes Santos, Hendrik v. Raven, Henry Cheng, hexdec, Hielke Morsink, hokasha2016, HtotheTML, Hudson Oliveira, irrelevantirreverent, Jackson Davis, James, jensj12, Jeroen Sack, JeroenDStout, Jim, Jim Armstrong, John, Jonathan Haas, Josh Trzebiatowski, Joshua Moerman, Josue Acevedo, Julia Pinheiro, Justin Gottula, Jørn Lomax, Kane, Keatzee, Keith Stellyes, Kevin, Kevin Burke, Krutonium, Kyle Kirbatski, kyphii, Leurak, Linus Unnebäck, LordOfLunacy, LRFLEW, Lucas Åström, lurimax-north, Maciek Baron, Maikel Stuivenberg, MaikelS11, Manuel Vögele, Marco Costa, marcovmun, Margen67, Marijn van der Werf, Martin Černáč, Mathias Gibbens, Matt, Matt Souza, Matte A, Matthias Lanzinger, Matthias Mailänder, Matthias Moninger, Max, Maximilian Irlinger, MaxMallon, mdbckrtn, Meehoi, Melissa, Michael Steenbeek, Michał Janiszewski, Michiel, Miso Zmiric, mrmbernardi, muemart, Mustapha Elghoul, NathanIkola, nexgenration, Nic, Nicolas Hawrysh, nightroan, Nils Caspar, Olivier Wervers, OpenRCT2 git bot, Osmodium, oystedal, Patrick Wijnings, Paul Sajna, Paweł Bylica, Peter, Peter Froud, Peter Hill, Peter Ryszkiewicz, Philip Goto, Phillip Walters, Piotr Kubaj, pizza2004, pkubaj, platipo, Pulkit, quale, Raymond Zhao, Richard Fine, Richard Jenkins, Richard Qian, Rik Smeets, Robert Jordan, Rodbourn, RollingStar, Romain, rpstester, Ruben De Smet, Rune Laenen, Ryan, Ryan Dupke, Saad Rehman, Sadret, Sam Atkins, Sam Horn, seanmajorpayne, Severin Paul Höfer, Sid, Sidney, Sijmen, Silent, Simon J, skdltmxn, Skip, Sophie Wallace, spacek531, Stephan Spengler, Ted John, TELK, TheAssassin, Thomas den Hollander, Timmy Weerwag, Tobias Kohlbau, Tom Lankhorst, Tom Parsons, Tom van der Kleij, Tomas Dittmann, TomasZilinek, Tomáš Žilínek, Trevor Harkness, Trevor Wilson, Tulio Leao, Umdlye, Vinicius Sa, w-flo, William Wallace, Wirlie, wolfreak99, X123M3-256, Xkeeper, xp4xbox, xperia64, Yannic Geurts, Yaroslav Tretyakov, YJSoft, zaxcav, ZeeMaji, ZeeMajora, Íkorni, Łukasz Pękalski, ζeh Matt

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Code languages: TypeScript, JavaScript
Code licenses: MIT
Code repositories: anprogrammer/OpenRoads.git(since 2014, )
Code dependencies: WebGL
Assets licenses: ?
Developer: Daniel Church

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Code languages: Python
Code licenses: GPL-2.0
Code repositories: osgames/openrts.git(since 2019, )
Code dependencies: PGU, pygame
Developers: Andreas Røsdal, Rtsfan

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Code languages: C#, Lua
Code licenses: GPL-3.0
Code repositories: Dzierzan/OpenSA.git(since 2019, )
Code dependencies: OpenRA
Developers: abcdefg30, Dzierzan, Matthias Mailänder, Paul Chote, Paweł Dzierżanowski, phrohdoh, taryn, Zimmermann Gyula

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Code languages: JavaScript
Code licenses: GPL-3.0
Code repositories: nicholas-ochoa/OpenSC2K.git(since 2018, )
Code dependencies: Phaser, WebGL
Developer: Nicholas Ochoa

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Code languages: C++
Code licenses: GPL-2.0
Code repositories: fabianschuiki/OpenSkyscraper.git(since 2010, )
Build system: CMake
Developers: Fabian Schuiki, Hoshi, matthewharvey

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Code languages: PHP
Code licenses: GPL-3.0
Code repositories: delight-im/OpenSoccer.git(since 2014, )
Developers: cosme12, Diego Lanciotti, Marco

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Code languages: C++
Code licenses: Unlicense
Code repositories: mdodis/OpenSolomonsKey.git(since 2019, )
Build system: Custom
Developers: immortalx74, John Dodis, Michael Dodis

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Code languages: C, C++, AngelScript
Code licenses: GPL-3.0
Code repositories: yvt/openspades.git(since 2013, )
Build system: CMake

Developers: (23)

ArionWT, ButterFinger, Chameleonhider, chammey, Damien Flament, David CARLIER, Dennis Barzakovsky, Dmitry Marakasov, Flávio Monteiro, Hanju Yoo, Ilia, Ilia Sidorenko, John Ericson, João Rodrigues, Kent Delante, Marco Schlumpp, Masaki Yamahata, mt-field, Nick Renieris, NotAFile, Pablo Dallegri, teodor6140, yvt

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Code languages: C++
Code licenses: GPL-3.0
Code repositories: ObKo/OpenSR.git(archived, since 2011, )
Code dependencies: OpenAL, Qt
Build system: CMake
Developers: Alexander Akulich, Dmitrii Kosarev, Kakadu, Konstantin Oblaukhov

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Code languages: C
Code licenses: GPL-3.0
Code repositories: sergiou87/open-supaplex.git(since 2020, )
Code dependencies: SDL2
Build system: Make
Developers: Alexey Sokolov, Cameron Cawley, Cillié Malan, mills32, MrHuu, Román Jiménez, Sergio Padrino

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Code languages: C, C++
Code licenses: GPL-2.0
Code repositories: OpenSWE1R/openswe1r.git(since 2017, ), james-knippes/openlgr.git
Code dependencies: OpenGL, SDL2
Build system: CMake
Developers: Jannik Vogel, Tobias Taschner

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Code languages: C
Code licenses: GPL-3.0
Code repositories: stople/OpenTitus.git(since 2012, )
Code dependencies: SDL
Developers: Eirik Stople, stople

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Code languages: Java
Code licenses: GPL-3.0
Code repositories: benjaminfoo/OpenTriad.git(since 2015, )
Build system: Gradle
Developer: Benjamin Fuu

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Code languages: C#
Code licenses: MPL-2.0
Code repositories: LazyDuchess/OpenTS2.git(since 2022, )
Code dependencies: Unity
Developers: Ammar Askar, berylliumquestion, Nahuel Rocchetti, riperiperi

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Code languages: C++
Code licenses: GPL-2.0
Code repositories: OpenTTD/OpenTTD.git(since 2018, )
Build system: Autoconf

Developers: (53)

Alberth289346, Alexander Weiss, Andy, Artin Alavi, Bernard Teo, Bouke Haarsma, Brendon Green, Charles Pigott, Dan Villiom Podlaski Christiansen, Didac Perez Parera, dP, Eddi-z, embeddedt, Emil Djupfeldt, Frazer Smith, frosch, Gabda, glx22, Greg-21, Henry, Ingo von Borstel, JMcKiern, Joan Josep, Joe Stringer, Jonathan G Rennison, Juriy Petrochenkov, kiwitreekor, Kuhnovic, Loïc Guilloux, Matt Kimber, Matthijs Kooijman, merni-ns, Michael Lutz, Milek7, nchappe, Niels Martin Hansen, Nik Nyby, nikolas, Owen Rudge, Patric Stout, Pavel Stupnikov, Peter Nelson, PeterN, Richard Wheeler, rubidium42, SamuXarick, sean, stormcone, TELK, Thijs Marinussen, Tyler Trahan, Ulf Hermann, Vít Šefl

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Code languages: C
Code licenses: GPL-2.0
Code repositories: opentyrian/opentyrian.git(since 2020, )
Code dependencies: SDL
Developers: Carl Reinke, schmerm, Stephan T. Lavavej, Yuri Kunde Schlesner

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Code languages: C
Code licenses: GPL-2.0
Code repositories: KScl/opentyrian2000.git(since 2020, )
Build system: Make
Developers: Carl Reinke, Kaito Sinclaire, schmerm, Stephan T. Lavavej, Yuri Kunde Schlesner

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Code languages: C#
Code licenses: ?
Code repositories: clashbyte/openvice.git(since 2016, )
Build system: VisualStudio
Developers: Mats Vederhus, Mikhail Popov

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Code languages: Go, C
Code licenses: GPL-3.0
Code repositories: andreas-jonsson/openwar.git(since 2016, )
Developer: Andreas T Jonsson

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Code languages: PHP
Code licenses: LGPL-3.0
Code repositories: ihofmann/open-websoccer.git(since 2014, )
Developer: Ingo Hofmann

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Code languages: C++
Code licenses: GPL-3.0
Code repositories: OpenXcom/OpenXcom.git(since 2011, )
Build system: CMake

Developers: (68)

54x, Alexander Kashev, Alexey Rogachevskiy, alienfood, Andrew Schultz, Andrii Kmit, Andriy B. Kmit', Andriy Kmit', Andrzej Owsiejczuk, Angelos Tzotsos, atlimit8, Azamat H. Hackimov, boozedog, cfailde, cornels, d2uriel, Daniel, DarkDefender, David A. Buser, Dmitriy Trushnikov, Dmitry Marakasov, dtrushn, Eino Keskitalo, FalkoOXC, Fenyő, Gix, greg, Greg Bonik, Greg V., Guido Pinkas, hackbunny, IvanDogovich, Jaco, Jason Gilbert, Jay Atkinson, JDarthenay, Jonathan Hamilton, kevL, Kim Nilsson, Konstantinos Arvanitis, Krzysztof Knapik, Marq Watkin, Meridian, Myk, NHOrus, Nik Konyuchenko, nilekurt, OmniscientQ, Player701, R1dO, radius75, redv, Ross Horsman, Ryan C. Creasey, ShadowGJ, sheepo99, Shugyousha, stefkosdev, stiiin, tomvd, Tomáš Chvátal, uqs, Volutar, Warboy1982, Westin Breger, WorMzy Tykashi, Yankes, ZehCastro

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Code languages: C#
Code licenses: GPL-3.0
Code repositories: Evilpersonwithnosoul/OpenYandere.git(since 2018, )
Code dependencies: Unity
Developer: HardlyACoolPerson

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Code languages: C++
Code licenses: GPL-2.0
Code repositories: osgames/kursk.git(since 2018, )
Developer: Kalman Andrasi

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Code languages: C++, GDScript
Code licenses: GPL-3.0
Code repositories: OpMonTeam/OpMon.git(since 2020, ), OpMonTeam/OpMon-Data.git @add(since 2018, )
Code dependencies: SFML
Assets licenses: CC-BY-SA, CC-BY
Build system: CMake
Developers: Aerzia, Bobor-dev, Cyrielle, Ethan_Charrier, Jonny Paton, Kévin Bernard-Allies, Michael Vetter, Navet56, Olivier Grech

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Code languages: C++
Code licenses: GPL-2.0
Code dependencies: OpenGL, SDL

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Code languages: JavaScript
Code licenses: GPL-2.0
Code repositories: bni/orbium.git(since 2010, )
Developer: Björn Nilsson

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Code languages: Go
Code licenses: MIT
Code repositories: code.ur.gs/lupine/ordoor.git

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Code languages: Fortran
Code licenses: ISC

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Code languages: C#, Java
Code licenses: GPL-2.0
Code repositories: osgames/orient.git(since 2018, )
Build system: Visual Studio, Ant
Developer: Michael Kriegel

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Code languages: CoffeeScript
Code licenses: GPL-2.0
Code repositories: stephank/orona.git(archived, since 2010, )
Developer: Stéphan Kochen

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Code languages: C++
Code licenses: GPL-3.0
Code repositories: dulsi/ostrichriders.git(since 2016, )
Build system: Make
Developers: Dennis Payne, dulsi, Rémi Verschelde

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Code languages: C#
Code licenses: MIT
Code repositories: ppy/osu.git(since 2014, )
Code dependencies: .NET

Developers: (302)

_ltn, Acid Chicken (硫酸鶏), Adam Baker, Adonais Romero González, Aergwyn, aitani9, Akash Mozumdar, Albert Tang, Albie, Alchyr, Alden Wu, Alex, Alex Amadori, AlFas, alice isabel, alikindsys, alix, alula, Andrei Baciu, Andrei Zavatski, Andrew Hong, andy, anellie, Angela Zhang, apollo, azutake, B3nn1, Badewanne3, BananeVolante, Bartłomiej Dach, Bastian Pedersen, Berkan Diler, BlauFx, Brandon Dong, C0D3 M4513R, cdwcgt, CenTdemeern1, Charlie, Charlotte Herngreen, chayleaf, Christian Kamphausen, Christine Chen, ckie, clayton, Clément Burgelin (Zyf), Cootz, Crafti, Craftplacer, Damnae, Dan Balasescu, Daniel Kirschten, Dao Heng Liu, Darius, Darius Wattimena, David Paiva, David Zhao, Dawid Kraiński, Dawid Sośnia, Dean Herbert, default0, Derrick Timmermans, Desconocidosmh, Detze, Dragicafit, Drew DeVault, Drezi126, DTSDAO, Dylan Nantz, ekrctb, Elvendir, emu1337, Endrik, Fabian L, Fabian Lindgren, Feodor0090, Fire937, Firmatorenio, Fluxie, frankhjwx, FreezyLemon, Fukashi13, Fyodor Ryzhov, Gabe Livengood, Gagah Pangeran Rosfatiputra, Ganendra Afrasya, Givikap120, Grrum, Gyoshi, Hanamuke, Henry Lin, HiddenNode, HoLLy, Huo Yaoyuan, Ibby, iilwy, ilsubyeega-desu, Integer, Isaac Andrews, its5Q, Ivan Pavluk, Jack Boswell, Jack Lee, Jack Scotson, JackLee9355, Jacob, Jacob Odgård Tørring, Jai Sharma, James, James Wilson, James58899, Jamie Taylor, Jamieson Berida, Jan Jurzitza, Jarosław Zgierski, Jason Won, Jay Lawton, Jayden, Jesse Myers, Jessica Meng, Jihoon, Jihoon Yang, JimmyC7834, John Biddle, John Neijzen, Joppe27, jorolf, Joseph Madamba, Joseph-Ramos-CMU, Josh, Joshua Hegedus, Justin, Justus Tumacder, jvyden, KaisoBits, Kaleb, kamp, Keijia, Kelvin, Kenny Sun, Khangaroo, KoziLord, kyekiller, Kyle Chang, Laica, LastExceed, LeeMustache, Leon Gebler, Liam DeVoe, LiangXiang Shen, Lily, Loreos7, Lucas A., Lucas Arriesse, LukynkaCZE, M0RGaming, maarvin, Maciej Sołtys, MafinBoy, Magnus-Cosmos, Malox10, Marco Stephan, maromalo, Martin, Mateusz, MATRIX-feather, Matěj Černický, Max, Max Hübner, Maximilian Kruse, MBmasher, McEndu, Mikal S., Mikal Stordal, Mike Will, MillhioreF, miterosan, MK56, molneya, Morguldir, morguldir, Moritz Bender, n4b3l, Nabile Rahmani, Naeferith, NaiPofo, nanashi, Nao, naoey, Nathan, Nathan Alo, Nathan Du, Naxess, Noah M., Nostril, NotGumballer91, nwabear, O Thiago, OAO, ocboogie, odgaard, OliBomby, Olivier Schipper, Olle Kelderman, Ondřej Vajďák, Opelkuh, OpenSauce, Owen Young, Pariring, Pascal Pomper, Pasi, Pasi4K5, Patrick Andersson, Paul Teng, Pedro Montes Alcalde, PercyDan, Pereira Matthieu, pfg, phos, Piotrek Brzeziński, PM-CS, Poliwrath, Power Maker, Poyo, ProgrammaticNajel, ProTheory8, QuantumSno, qwewqa, recapitalverb, RedMindZ, rednir, Remie Richards, Rizon, RizonFTW, Robin Avery, Rodrigo Pina, rogerqcify, Ron B, Ronnie, Ronnie Moir, rootcan, RORIdev, roridev, Roxie Wattz, Ruki, rushii, Ryan Zmuda, Salman Ahmed, Samuel Cattini-Schultz, Samuel Huang, Santeri Nogelainen, Sebastian Krajewski, Semro, Seth, sh0ckR6, Shane Woolcock, Shawdooow, Shivam, smallketchup82, Sofia Lindgren, solstice23, Spooghetti420, StanR, Stedoss, su, Sunghwan Bang, Susko3, Swekka, Swords, tgi, TheOmyNomy, ThePyrotechnic, Thomas Müller, Thomas Tan, Tib, Tim Nolte, Tim Oliver, timiimit, Tom Arrow, TPGPL, Tyler, UselessToucan, Vidalee, Viktor Rosvall, Vincent Maggioli, VINXIS, Vivi, Vladimir Pavlov, voided, voidedWarranties, vperus, vunyunt, Walavouchey, wildtree, Willy Tu, Wleter, Wooster, Xexxar, Y. T., Yao Chung Hu, yesseruser, Инсур, 파링

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Code languages: C, C++
Code licenses: Custom
Code repositories: jp8900308/other-life.git(since 2015, ), gregoryfenton/other-life.git @add(since 2012, )
Developers: Alexander Gottwald, Felix Janda, Gé Vissers, Joe "Flame" Sullivan, Karol, Paul Broadhead (bluap in EL), Sir-Odie, xaphier

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Code languages: Ren'Py
Code licenses: GPL-3.0
Code repositories: qirien/personal-space.git(since 2012, )
Code dependencies: Ren'Py
Developers: Andrea Landaker, Rachel

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Code languages: Python
Code licenses: GPL-2.0
Code repositories: ospaceteam/outerspace.git(since 2012, ), svn.code.sf.net/p/ospace/code
Code dependencies: pygame
Developers: Aina Melkor, Anderuso, Marek Haičman, Mental, PeS, Qark, Random Chaos, Sindel, Vladimir Meister

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Code languages: C++
Code licenses: 3-clause BSD
Code repositories: OutpostUniverse/OPHD.git(since 2018, )
Build system: Make
Developers: Alex, belgianguy, Brett, cugone, Daniel Stevens, Inglonias, Leeor Dicker, matt-handy, Robert Toth

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Code languages: C
Code licenses: GPL-2.0
Assets licenses: ?
Developer: Linley Henzell

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Code languages: C, C++
Code licenses: Apache-2.0
Code repositories: WolfireGames/overgrowth.git(since 2022, )
Build system: CMake
Developers: Max Bo Johan Danielsson, Neal Gompa (ニール・ゴンパ), redruin1, Stephan Vedder