PolySharp provides generated, source-only polyfills for C# language features, to easily use all runtime-agnostic features downlevel. Add a reference, set your C# version to latest and have fun! 🚀

Curated list of awesome Roslyn books, tutorials, open-source projects, analyzers, code fixes, refactorings, and source generators

Alloc-free and fast replacement for Linq, with code generation

Roslyn analyzer that finds usages of APIs that will throw PlatformNotSupportedException on certain platforms.

The ultimate fast alternative to Activator.CreateInstance<T> / new T()

Keyset/Seek/Cursor pagination for Entity Framework Core.

A small front-end framework for Unity's UIToolkit powered by code generation.

AsyncFixer: Async/Await Analyzers and Code Fixes

Roslyn analyzers that aim to help security audit on .NET applications.

Roslyn analyzers for xUnit.net (please open issues in https://github.com/xunit/xunit)

A source code generator for automatically implementing IEquatable<T> using only attributes.

Transform your codebase into an intelligent knowledge base for AI-powered development with Cursor IDE, Google AntiGravity, and MCP-enabled assistants

Roslyn analyzers for writing unit tests with NUnit

Lightweight fork of the .NET Compiler Platform ("Roslyn") by adding a compiler plugin infrastructure

C# Analyzer Adding Exhaustive Checking of Switch Statements and Expressions

Your codebase - is your Knowledge Graph

Manage Visual Studio extensions, VSIX packages, themes, analyzers, and development resources from a simple Windows desktop application.

A Roslyn-based C# analyzer that detects exception handling patterns in your code

Building unbreakable modular monoliths in .NET. Ensuring that the last feature you build is just as easy to ship as the first.

C# immutable records generator