Source
Game Development and Java.
Best Source Alternatives & Competitors in 2025
The best Source alternatives based on verified products, community votes, reviews and other factors.
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Open-Source Alternatives.
Latest update:
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/godot-engine-alternativesFeature-packed 2D and 3D open source game engine.
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/unreal-engine-alternativesUnreal Engine 4 is a suite of integrated tools for game developers to design and build games, simulations, and visualizations.
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/frostbite-alternativesAn integrated clinical practice, education and research institution specializing in treating patients. Account maintained by @MayoClinic/MCSMN.
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/cryengine-alternativesThe most powerful game development platform is now available to everyone. Full engine source code.
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/havok-alternativesColorado Thrash Metal - New Website Coming Soon
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/unity-alternativesThe multiplatform game creation tools for everyone.
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/appgamekit-alternativesAppGameKit is a game development platform for mobile devices.
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/unity3d-alternativesUnity is the ultimate game development platform. Use Unity to build high-quality 3D and 2D games, deploy them across mobile, desktop, VR/AR, consoles or the Web, and connect with loyal and enthusiastic players and customers.
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/game-guru-alternativesCreate, play and share fun games on your PC with absolutely no technical knowledge needed!
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/tombstone-engine-alternativesA direct successor to the C4 engine.
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/babylon-js-alternativesA complete JavaScript framework for building 3D games with HTML5, WebGL and Web Audio
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/playcanvas-alternativesPlayCanvas is an open-source game engine built on WebGL and WebVR.
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/armory3d-alternativesArmory 3D is a free and open source game development software developed using Haxe and Kha and made to run inside Blender.