C-sharp

Verified open-source repositories and technical documentation formatted for LLM context windows and autonomous AI coding agents (53 repositories indexed).

.NET Decompiler with support for PDB generation, ReadyToRun, Metadata (&more) - cross-platform!

25,848 GitHub

EF Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations.

14,763 GitHub

Open-source web application framework for ASP.NET Core! Offers an opinionated architecture to build enterprise software solutions with best practices on top of the .NET. Provides the fundamental infrastructure, cross-cutting-concern implementations, startup templates, application modules, UI themes, tooling and documentation.

14,391 GitHub

QuestPDF is a modern library for PDF document generation. Its fluent C# API lets you design complex layouts with clean, readable code. Create documents using a flexible, component-based approach.

14,003 GitHub

mRemoteNG is the next generation of mRemote, open source, tabbed, multi-protocol, remote connections manager.

10,898 GitHub

Open-source platform for building cross-platform native Mobile, Web, Desktop, and Embedded apps from a single C#/XAML codebase. Work from any IDE/CLI with Hot Reload, Visual Designer, MCPs, and Skills built for modern .NET workflows. 200M+ NuGet downloads.

10,002 GitHub

Algorithmic trading and quantitative trading open source platform to develop trading robots (stock markets, forex, crypto, bitcoins, and options).

9,885 GitHub

A framework that allows developers to cobble together a better UI for their own WPF applications with minimal effort.

9,788 GitHub

The automatic type-safe REST library for .NET Core, Xamarin and .NET. Heavily inspired by Square's Retrofit library, Refit turns your REST API into a live interface.

9,556 GitHub

微信全平台 .NET SDK， Senparc.Weixin for C#，支持 .NET Framework 及 .NET Core、.NET 10.0。已支持微信公众号、小程序、小游戏、微信支付、企业微信/企业号、开放平台、JSSDK、微信周边等全平台。 WeChat SDK for C#.

8,857 GitHub

Ruta de estudio basada en ejercicios de código de la comunidad MoureDev para aprender y practicar lógica usando cualquier lenguaje de programación.

8,606 GitHub

Orchard Core is an open-source modular and multi-tenant application framework built with ASP.NET Core, and a content management system (CMS) built on top of that framework.

8,149 GitHub

Prism is a framework for building loosely coupled, maintainable, and testable XAML applications in WPF, Xamarin Forms, and Uno / Win UI Applications..

6,773 GitHub

NLog - Flexible and Structured Logging for various .NET Platforms

6,538 GitHub

:books: :chart_with_upwards_trend: Plug-and-play class-library project of standard Data Structures and Algorithms in C#

6,158 GitHub

This repository is for active development of the Azure SDK for .NET. For consumers of the SDK we recommend visiting our public developer docs at https://learn.microsoft.com/dotnet/azure/ or our versioned developer docs at https://azure.github.io/azure-sdk-for-net.

6,032 GitHub

:angel: The ultimate angle brackets parser library parsing HTML5, MathML, SVG and CSS to construct a DOM based on the official W3C specifications.

5,524 GitHub

Zero allocation LINQ with LINQ to Span, LINQ to SIMD, and LINQ to Tree (FileSystem, JSON, GameObject, etc.) for all .NET platforms and Unity, Godot.

5,090 GitHub

Canonical actor model implementation for .NET with local + distributed actors in C# and F#.

5,069 GitHub

xUnit.net is a free, open source, community-focused unit testing tool for .NET.

4,569 GitHub

📱 Two-Factor Authentication (2FA) client for Android + Wear OS

4,419 GitHub