Top CSHARP GitHub Repositories & Tools (2026)

The Windows App SDK empowers all Windows desktop apps with modern Windows UI, APIs, and platform features, including back-compat support, shipped via NuGet.

Static site generator for .NET API documentation.

Lightweight and fast library written in C# for reading Microsoft Excel files

OpenAPI based HTTP Client code generator

A OneNote add-in with simple, yet powerful and useful features

Business Apps Made Simple with Asp.Net Core MVC / TypeScript

A framework for building messaging apps with .NET and C#.

Undetectable, Fast, Cross-Platform, Free VPN

.NET for Apache® Spark™ makes Apache Spark™ easily accessible to .NET developers.

A production-ready data access platform for .NET applications.

Fast, cross-platform and reliable multipart downloader with asynchronous progress events for .NET applications.

An open-source project for Windows developers to learn how to add AI with local models and APIs to Windows apps.

E-commerce platform built with ASP.NET Core using MongoDB for NoSQL storage

A .NET library for making bots using the Discord API.

Cross-platform video editing (compositing) software.

A powerful C# Roslyn analyzer that uses static analysis to detect bugs, surface security issues, and enforce best practices—helping developers and AI write more reliable code.

C#/.NET client library for the Binance.com cryptocurrency exchange REST and WebSocket APIs, supporting Spot and Futures trading and market data with strongly typed models.

Open-source cross-platform symbolic algebra library for C# and F#. Can be used for both production and research purposes.

.NET for the NES game console

A C# Client library for Supabase