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

  •575575 forks•2.9k2.9k stars•425425 issues•4747 pull requests•Updated Jul 31, 2026Jul 31, 2026

• skills

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

  agent-skills

  agent-skills

  C#

  •

  MIT License

  •351351 forks•4.8k4.8k stars•6767 issues•1919 pull requests•Updated Jul 31, 2026Jul 31, 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

  •578578 forks•2.1k2.1k stars•375375 issues•2626 pull requests•Updated Jul 31, 2026Jul 31, 2026

• runtime

  Public
  .NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

  dotnethelp-wantedhacktoberfest

  dotnethelp-wantedhacktoberfest

  C#

  •

  MIT License

  •5.5k5.5k forks•18k18k stars•7.2k7.2k issues•477477 pull requests•Updated Jul 31, 2026Jul 31, 2026

• fsharp

  Public

  dotnet/fsharp’s past year of commit activity
  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

  •871871 forks•4.3k4.3k stars•1.1k1.1k issues•109109 pull requests•Updated Jul 31, 2026Jul 31, 2026

• docker-tools

  Public

  dotnet/docker-tools’s past year of commit activity
  This is a repo to house some common tools for our various docker repos.

  C#

  •

  MIT License

  •6767 forks•179179 stars•102102 issues•1212 pull requests•Updated Jul 31, 2026Jul 31, 2026

• maui

  Public
  .NET MAUI is the .NET Multi-platform App UI, a framework for building native device applications spanning mobile, tablet, and desktop.

  androidmicrosoftios+ 10

  androidmicrosoftiosmulti-platformmobiledotnetdesktopuser-interfacehacktoberfestmaui+ 3

  C#

  •

  MIT License

  •2k2k forks•23k23k stars•3.9k3.9k issues•110110 pull requests•Updated Jul 31, 2026Jul 31, 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

  •1.3k1.3k forks•3.2k3.2k stars•2.3k2.3k issues•164164 pull requests•Updated Jul 31, 2026Jul 31, 2026

• arcade

  Public

  dotnet/arcade’s past year of commit activity
  Tools that provide common build infrastructure for multiple .NET Foundation projects.

  C#

  •

  MIT License

  •393393 forks•725725 stars•357357 issues•4242 pull requests•Updated Jul 31, 2026Jul 31, 2026

• roslyn

  Public

  dotnet/roslyn’s past year of commit activity
  The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

  visual-studiocsharproslyn+ 2

  visual-studiocsharproslynvisual-basichacktoberfest

  C#

  •

  MIT License

  •4.3k4.3k forks•21k21k stars•5.6k5.6k issues•722722 pull requests•Updated Jul 31, 2026Jul 31, 2026

• android-libzipsharp

  Public
  A managed wrapper (and then some) around libzip (https://libzip.org/)

  dotnetmononative-libraries+ 1

  dotnetmononative-librarieslibzip

  C#

  •

  MIT License

  •2222 forks•3030 stars•55 issues•00 pull requests•Updated Jul 31, 2026Jul 31, 2026

• msbuild

  Public

  dotnet/msbuild’s past year of commit activity
  The Microsoft Build Engine (MSBuild) is the build platform for .NET and Visual Studio.

  microsoftvisual-studiobuild+ 3

  microsoftvisual-studiobuildmsbuildhelp-wantedhacktoberfest

  C#

  •

  MIT License

  •1.4k1.4k forks•5.5k5.5k stars•1.5k1.5k issues•110110 pull requests•Updated Jul 31, 2026Jul 31, 2026

• versions

  Public
  This repo contains information about the various component versions that ship with .NET Core.

  MIT License

  •159159 forks•154154 stars•00 issues•00 pull requests•Updated Jul 31, 2026Jul 31, 2026

• aspnetcore

  Public
  ASP.NET Core is a cross-platform .NET framework for building modern cloud-based web applications on Windows, Mac, or Linux.

  dotnetaspnetcorehelp-wanted+ 1

  dotnetaspnetcorehelp-wantedhacktoberfest

  C#

  •

  MIT License

  •11k11k forks•38k38k stars•3.7k3.7k issues•333333 pull requests•Updated Jul 31, 2026Jul 31, 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

  •328328 forks•1.2k1.2k stars•137137 issues•3737 pull requests•Updated Jul 31, 2026Jul 31, 2026

• skills-data

  Public

  dotnet/skills-data’s past year of commit activity
  MIT License

  •33 forks•11 star•11 issue•11 pull request•Updated Jul 31, 2026Jul 31, 2026

• arcade-services

  Public
  Home to .NET's dependency flow system & tooling

  infrastructuredotnetdependencies+ 2

  infrastructuredotnetdependenciesengineering-platformsdepedency-tracking

  C#

  •

  MIT License

  •8585 forks•8585 stars•160160 issues•77 pull requests•Updated Jul 31, 2026Jul 31, 2026

• runtimelab

  Public
  This repo is for experimentation and exploring new ideas that may or may not make it into the main dotnet/runtime repo.

  MIT License

  •222222 forks•1.6k1.6k stars•252252 issues•55 pull requests•Updated Jul 31, 2026Jul 31, 2026

• SqlClient

  Public

  dotnet/SqlClient’s past year of commit activity
  Microsoft.Data.SqlClient provides database connectivity to SQL Server for .NET applications.

  C#

  •

  MIT License

  •332332 forks•986986 stars•231231 issues•4242 pull requests•Updated Jul 31, 2026Jul 31, 2026

• BenchmarkDotNet

  Public
  Powerful .NET library for benchmarking

  c-sharpbenchmarkingbenchmark+ 4

  c-sharpbenchmarkingbenchmarkperformancecsharpdotnethacktoberfest

  C#

  •

  MIT License

  •1.1k1.1k forks•11k11k stars•136136 issues•3636 pull requests•Updated Jul 31, 2026Jul 31, 2026

• emsdk

  Public
  Emscripten SDK

  Python

  •

  Other

  •810810 forks•1919 stars•00 issues•11 pull request•Updated Jul 31, 2026Jul 31, 2026

• diagnostics

  Public

  dotnet/diagnostics’s past year of commit activity
  This repository contains the source code for various .NET Core runtime diagnostic tools and documents.

  C++

  •

  MIT License

  •403403 forks•1.3k1.3k stars•273273 issues•2727 pull requests•Updated Jul 31, 2026Jul 31, 2026

• website-thanks-data

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

  dotnetdotnet-core

  dotnetdotnet-core

  C#

  •

  MIT License

  •1212 forks•1010 stars•11 issue•22 pull requests•Updated Jul 31, 2026Jul 31, 2026

• dotnet-buildtools-prereqs-docker

  Public
  Used to maintain the Docker images hosted at the mcr.microsoft.com/dotnet-buildtools/prereqs image repository

  Dockerfile

  •

  MIT License

  •117117 forks•8888 stars•3838 issues•11 pull request•Updated Jul 31, 2026Jul 31, 2026

• core

  Public
  .NET news, announcements, release notes, and more!

  dotnetdotnet-core

  dotnetdotnet-core

  PowerShell

  •

  MIT License

  •4.9k4.9k forks•22k22k stars•341341 issues•77 pull requests•Updated Jul 31, 2026Jul 31, 2026

• vscode-csharp

  Public
  Official C# support for Visual Studio Code

  c-sharpcsharpdotnet+ 2

  c-sharpcsharpdotnetvscodeomnisharp

  TypeScript

  •

  MIT License

  •730730 forks•3.1k3.1k stars•678678 issues•2222 pull requests•Updated Jul 31, 2026Jul 31, 2026

• efcore

  Public
  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•2.3k2.3k issues•3939 pull requests•Updated Jul 31, 2026Jul 31, 2026

• performance

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

  F#

  •

  MIT License

  •300300 forks•771771 stars•209209 issues•5353 pull requests•Updated Jul 31, 2026Jul 31, 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•7.7k7.7k stars•1.4k1.4k issues•223223 pull requests•Updated Jul 31, 2026Jul 31, 2026

• dev-proxy

  Public
  Simulate API failures, throttling, and chaos — all from your command line.

  httpdevelopmentrest+ 12

  httpdevelopmentrestproxymock-serverdevtoolsopenapideveloper-toolsapi-testinghacktoberfest+ 5

  C#

  •

  MIT License

  •8989 forks•812812 stars•3333 issues•99 pull requests•Updated Jul 31, 2026Jul 31, 2026