Repositories list

• macios

  Public
  .NET for iOS, Mac Catalyst, macOS, and tvOS provide open-source bindings of the Apple SDKs for use with .NET managed languages such as C#

  macosiosxamarin+ 4

  macosiosxamarincsharpdotnettvoswatchos

  C#

  •

  Other

  •562562 forks•2.8k2.8k stars•445445 issues•4141 pull requests•Updated Apr 16, 2026Apr 16, 2026

• fsharp

  Public
  The F# compiler, F# core library, F# language service, and F# tooling integration for Visual Studio

  visual-studiotoolscompiler+ 5

  visual-studiotoolscompilerfsharpfunctional-programmingdotnetnetcoreintellisense

  F#

  •

  MIT License

  •856856 forks•4.3k4.3k stars•1.2k1.2k issues•9090 pull requests•Updated Apr 16, 2026Apr 16, 2026

• dotnet

  Public

  dotnet/dotnet’s past year of commit activity
  Home of .NET's Virtual Monolithic Repository which includes all the code needed to build the .NET SDK.

  dotnetmonorepo

  dotnetmonorepo

  C#

  •

  MIT License

  •279279 forks•1.1k1.1k stars•134134 issues•5454 pull requests•Updated Apr 16, 2026Apr 16, 2026

• android

  Public
  .NET for Android provides open-source bindings of the Android SDK for use with .NET managed languages such as C#

  C#

  •

  MIT License

  •566566 forks•2.1k2.1k stars•403403 issues•2727 pull requests•Updated Apr 16, 2026Apr 16, 2026

• sdk

  Public

  dotnet/sdk’s past year of commit activity
  Core functionality needed to create .NET Core projects, that is shared between Visual Studio and CLI

  clivisual-studiosdk+ 1

  clivisual-studiosdkdotnet

  C#

  •

  MIT License

  •1.2k1.2k forks•3.1k3.1k stars•2.7k2.7k issues•227227 pull requests•Updated Apr 16, 2026Apr 16, 2026

• winforms

  Public

  dotnet/winforms’s past year of commit activity
  Windows Forms is a .NET UI framework for building Windows desktop applications.

  winformsdesktophelp-wanted+ 2

  winformsdesktophelp-wantedwindows-formshacktoberfest

  C#

  •

  MIT License

  •1.1k1.1k forks•4.8k4.8k stars•718718 issues•8686 pull requests•Updated Apr 16, 2026Apr 16, 2026

• runtime

  Public

  dotnet/runtime’s past year of commit activity
  .NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

  dotnethelp-wantedhacktoberfest

  dotnethelp-wantedhacktoberfest

  C#

  •

  MIT License

  •5.4k5.4k forks•18k18k stars•7.8k7.8k issues•439439 pull requests•Updated Apr 16, 2026Apr 16, 2026

• templating

  Public
  This repo contains the Template Engine which is used by dotnet new

  dotnetdotnet-template

  dotnetdotnet-template

  C#

  •

  MIT License

  •394394 forks•1.7k1.7k stars•210210 issues•1111 pull requests•Updated Apr 16, 2026Apr 16, 2026

• dev-proxy

  Public

  dotnet/dev-proxy’s past year of commit activity
  Simulate API failures, throttling, and chaos — all from your command line.

  httpdevelopmentrest+ 12

  httpdevelopmentrestproxymock-serverdevtoolsopenapideveloper-toolsapi-testinghacktoberfest+ 5

  C#

  •

  MIT License

  •8181 forks•785785 stars•2828 issues•66 pull requests•Updated Apr 16, 2026Apr 16, 2026

• efcore

  Public

  dotnet/efcore’s past year of commit activity
  EF Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations.

  c-sharpormdatabase+ 6

  c-sharpormdatabaseentity-frameworkdotnet-coredotnet-standardhacktoberfestdotnet-frameworkaspnet-product

  C#

  •

  MIT License

  •3.4k3.4k forks•15k15k stars•2.4k2.4k issues•3737 pull requests•Updated Apr 16, 2026Apr 16, 2026

• performance

  Public
  This repo contains benchmarks used for testing the performance of all .NET Runtimes

  F#

  •

  MIT License

  •295295 forks•760760 stars•209209 issues•5454 pull requests•Updated Apr 16, 2026Apr 16, 2026

• docs

  Public

  dotnet/docs’s past year of commit activity
  This repository contains .NET Documentation.

  csharpfsharpvisual-basic+ 3

  csharpfsharpvisual-basicdotnetdotnet-corehacktoberfest

  Creative Commons Attribution 4.0 International

  •6.1k6.1k forks•4.7k4.7k stars•932932 issues•6767 pull requests•Updated Apr 16, 2026Apr 16, 2026

• reactive

  Public
  The Reactive Extensions for .NET

  C#

  •

  MIT License

  •789789 forks•7.1k7.1k stars•153153 issues•2626 pull requests•Updated Apr 16, 2026Apr 16, 2026

• website-thanks-data

  Public
  Console app for creating data file for https://thanks.dot.net

  dotnetdotnet-core

  dotnetdotnet-core

  C#

  •

  MIT License

  •88 forks•88 stars•11 issue•22 pull requests•Updated Apr 16, 2026Apr 16, 2026

• roslyn

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

  visual-studiocsharproslyn+ 2

  visual-studiocsharproslynvisual-basichacktoberfest

  C#

  •

  MIT License

  •4.2k4.2k forks•20k20k stars•5.5k5.5k issues•637637 pull requests•Updated Apr 16, 2026Apr 16, 2026

• csharplang

  Public
  The official repo for the design of the C# programming language

  csharplanguage-design

  csharplanguage-design

  C#

  •1.1k1.1k forks•13k13k stars•237237 issues•4040 pull requests•Updated Apr 16, 2026Apr 16, 2026

• dotnet-monitor

  Public

  dotnet/dotnet-monitor’s past year of commit activity
  This repository contains the source code for .NET Monitor - a tool that allows you to gather diagnostic data from running applications using HTTP endpoints

  C#

  •

  MIT License

  •122122 forks•706706 stars•126126 issues•55 pull requests•Updated Apr 16, 2026Apr 16, 2026

• docfx

  Public
  Static site generator for .NET API documentation.

  apimarkdownstatic-site-generator+ 3

  apimarkdownstatic-site-generatordocumentationcsharpdotnet

  C#

  •

  MIT License

  •886886 forks•4.4k4.4k stars•402402 issues•4848 pull requests•Updated Apr 16, 2026Apr 16, 2026

• extensions

  Public
  This repository contains a suite of libraries that provide facilities commonly needed when creating production-ready applications.

  dotnet

  dotnet

  C#

  •

  MIT License

  •863863 forks•3.1k3.1k stars•208208 issues•2222 pull requests•Updated Apr 16, 2026Apr 16, 2026

• diagnostics

  Public
  This repository contains the source code for various .NET Core runtime diagnostic tools and documents.

  C++

  •

  MIT License

  •392392 forks•1.3k1.3k stars•255255 issues•2828 pull requests•Updated Apr 16, 2026Apr 16, 2026

• installer

  Public
  .NET SDK Installer

  434434 forks•1.3k1.3k stars•2323 issues•66 pull requests•Updated Apr 16, 2026Apr 16, 2026

• windowsdesktop

  Public
  PowerShell

  •

  MIT License

  •6464 forks•208208 stars•1313 issues•00 pull requests•Updated Apr 16, 2026Apr 16, 2026

• skills

  Public
  Repository for skills to assist AI coding agents with .NET and C#

  agent-skills

  agent-skills

  C#

  •

  MIT License

  •9595 forks•1.2k1.2k stars•4444 issues•3535 pull requests•Updated Apr 16, 2026Apr 16, 2026

• razor

  Public
  Compiler and tooling experience for Razor ASP.NET Core apps in Visual Studio and VS Code.

  aspnethacktoberfest

  aspnethacktoberfest

  C#

  •

  MIT License

  •238238 forks•708708 stars•670670 issues•3434 pull requests•Updated Apr 16, 2026Apr 16, 2026

• arcade

  Public
  Tools that provide common build infrastructure for multiple .NET Foundation projects.

  C#

  •

  MIT License

  •384384 forks•719719 stars•417417 issues•4343 pull requests•Updated Apr 16, 2026Apr 16, 2026

• wpf

  Public
  WPF is a .NET Core UI framework for building Windows desktop applications.

  dotnetwpfhelp-wanted

  dotnetwpfhelp-wanted

  C#

  •

  MIT License

  •1.3k1.3k forks•7.6k7.6k stars•1.4k1.4k issues•213213 pull requests•Updated Apr 16, 2026Apr 16, 2026

• sourcelink

  Public

  dotnet/sourcelink’s past year of commit activity
  Source Link enables a great source debugging experience for your users, by adding source control metadata to your built assets

  C#

  •

  MIT License

  •136136 forks•1.3k1.3k stars•133133 issues•1414 pull requests•Updated Apr 16, 2026Apr 16, 2026

• command-line-api

  Public

  dotnet/command-line-api’s past year of commit activity
  Command line parsing, invocation, and rendering of terminal output.

  parserterminalparsing+ 10

  parserterminalparsingcommand-lineposixdotnet-coredotnet-standardvt100hacktoberfestcompletions+ 3

  C#

  •

  MIT License

  •416416 forks•3.7k3.7k stars•446446 issues•3232 pull requests•Updated Apr 16, 2026Apr 16, 2026

• emsdk

  Public
  Emscripten SDK

  PowerShell

  •

  Other

  •806806 forks•1717 stars•00 issues•55 pull requests•Updated Apr 16, 2026Apr 16, 2026

• deployment-tools

  Public
  This repo contains the code to build the .NET deployment tools and installers for all supported platforms, as well as the sources to .NET deployment tools.

  C#

  •

  MIT License

  •6666 forks•207207 stars•3434 issues•44 pull requests•Updated Apr 16, 2026Apr 16, 2026