UnityCsReference

UnityCsReference is the C# reference source code for the Unity engine and editor. It provides developers transparency into how Unity's C# APIs are implemented under the hood but is strictly for reference—not for modification or redistribution without a commercial license. The terms of use do not permit you to modify or redistribute the C# code (in either source or binary form). If you want to modify Unity's source code (C# and C++), contact Unity sales for a commercial source code license. The repository includes third-party code subject to third-party notices.

Features

Contains the full C# implementation of Unity engine and editor APIs
Useful for educational insight into Unity's internal workings
Includes third-party code along with proper notices
Encourages filing bugs via Unity Bug Reporter, though does not accept pull requests
Supports viewing of Editor, runtime, module and binding components

Project Samples

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License

MIT License

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Additional Project Details

Operating Systems

Linux, Mac, Windows

Programming Language

Related Categories

C# Source Code Management Software

Registered

2025-08-14

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