Open Source Alternatives to Unity Technologies
4 open source Game Engine options similar to Unity Technologies, ranked by named competitors first, sector overlap, and our 0-100 AI-readiness score. Every company listed publishes its source: each one carries an open source sector tag and a public GitHub repository.
Heroic Labs47GamingLisbon, PortugalSocial infrastructure for games, makers of Nakama game server.
Open source · Self-hostable
Cua39AI AgentSan Francisco, United States$500KCua provides an open-source framework and cloud desktops for AI agents to control operating systems and desktop applications across Linux, Windows, macOS, and Android.
Open source
.NET8Software DevelopmentRedmond, USAA free, cross-platform, open-source developer platform for building many types of applications.
Open source · Self-hostable
GDevelop7Computer GamesLondon, GBNo-code game development platform empowering creators to build games without prior technical skills.
Open source
| Company | Sector | License | HQ | Funding | Score | Website |
|---|---|---|---|---|---|---|
| Heroic LabsSocial infrastructure for games, makers of Nakama game server. | Gaming | Open source · Self-hostable | Lisbon, Portugal | — | 47 | |
| CuaCua provides an open-source framework and cloud desktops for AI agents to control operating systems and desktop applications across Linux, Windows, macOS, and Android. | AI Agent | Open source | San Francisco, United States | $500K | 39 | |
| .NETA free, cross-platform, open-source developer platform for building many types of applications. | Software Development | Open source · Self-hostable | Redmond, USA | — | 8 | |
| GDevelopNo-code game development platform empowering creators to build games without prior technical skills. | Computer Games | Open source | London, GB | — | 7 |