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dotnet/roslyn

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

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What it does

Roslyn is the engine that powers Microsoft's C# and Visual Basic programming languages, turning code written by developers into software that computers can actually run. It also exposes a rich set of tools that let other software analyze, understand, and even rewrite code automatically.

Why it matters

Any product built on Microsoft's .NET ecosystem — which powers a massive share of enterprise software — runs on top of Roslyn, making it foundational infrastructure for millions of applications. Builders creating developer tools, code editors, or automated code-review products on the .NET stack can tap directly into this open-source project to add powerful code intelligence features without building from scratch.

35Active

On the radar — signal detected

Stars
20.3k
Forks
4.2k
Contributors
1005
Language
C#

Score updated Mar 25, 2026

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