Repositories list

• msbuild

  Public
  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•1.4k1.4k issues•9696 pull requests•Updated Apr 17, 2026Apr 17, 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•648648 pull requests•Updated Apr 17, 2026Apr 17, 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•449449 pull requests•Updated Apr 17, 2026Apr 17, 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•3232 pull requests•Updated Apr 17, 2026Apr 17, 2026

• maui-labs

  Public
  Experimental and pre-release tools for .NET MAUI

  androidmicrosoftios+ 10

  androidmicrosoftiosmulti-platformmobileaidotnetmcpdesktopuser-interface+ 3

  C#

  •

  MIT License

  •99 forks•7575 stars•99 issues•1111 pull requests•Updated Apr 17, 2026Apr 17, 2026

• ef6

  Public
  This is the codebase for Entity Framework 6 (previously maintained at https://entityframework.codeplex.com). Entity Framework Core is maintained at https://gith…

  ormdatabaseentity-framework+ 3

  ormdatabaseentity-frameworkef6dotnet-frameworkentity-framework-6

  C#

  •

  MIT License

  •553553 forks•1.4k1.4k stars•22 issues•00 pull requests•Updated Apr 17, 2026Apr 17, 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

  •1.9k1.9k forks•23k23k stars•3.7k3.7k issues•303303 pull requests•Updated Apr 17, 2026Apr 17, 2026

• dotnet-operator-sdk

  Public
  KubeOps is a Kubernetes operator sdk in dotnet. Strongly inspired by kubebuilder.

  kubernetessdkdotnet+ 3

  kubernetessdkdotnetoperatorcrdskubernetes-operator-sdk

  C#

  •

  Apache License 2.0

  •8484 forks•359359 stars•2828 issues•22 pull requests•Updated Apr 17, 2026Apr 17, 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•231231 pull requests•Updated Apr 17, 2026Apr 17, 2026

• 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•446446 issues•4141 pull requests•Updated Apr 17, 2026Apr 17, 2026

• EntityFramework.Docs

  Public
  Documentation for Entity Framework Core and Entity Framework 6

  documentationormentity-framework+ 2

  documentationormentity-frameworkentity-framework-coreentity-framework-6

  Mermaid

  •

  Creative Commons Attribution 4.0 International

  •2k2k forks•1.7k1.7k stars•557557 issues•11 pull request•Updated Apr 17, 2026Apr 17, 2026

• skills

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

  agent-skills

  agent-skills

  C#

  •

  MIT License

  •9797 forks•1.3k1.3k stars•4242 issues•3737 pull requests•Updated Apr 17, 2026Apr 17, 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•3.6k3.6k issues•250250 pull requests•Updated Apr 17, 2026Apr 17, 2026

• dotnet-api-docs

  Public
  .NET API reference documentation (.NET 5+, .NET Core, .NET Framework)

  hacktoberfest

  hacktoberfest

  C#

  •

  Other

  •1.7k1.7k forks•905905 stars•1.5k1.5k issues•100100 pull requests•Updated Apr 17, 2026Apr 17, 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•8787 pull requests•Updated Apr 17, 2026Apr 17, 2026

• docs-maui

  Public
  This repository contains documentation for .NET Multi-platform App UI (MAUI).

  csharpdotnet

  csharpdotnet

  Creative Commons Attribution 4.0 International

  •253253 forks•274274 stars•144144 issues•1111 pull requests•Updated Apr 17, 2026Apr 17, 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•1212 pull requests•Updated Apr 17, 2026Apr 17, 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•3535 pull requests•Updated Apr 17, 2026Apr 17, 2026

• dotnet

  Public
  Home of .NET's Virtual Monolithic Repository which includes all the code needed to build the .NET SDK.

  dotnetmonorepo

  dotnetmonorepo

  C#

  •

  MIT License

  •280280 forks•1.1k1.1k stars•135135 issues•5151 pull requests•Updated Apr 17, 2026Apr 17, 2026

• SqlClient

  Public
  Microsoft.Data.SqlClient provides database connectivity to SQL Server for .NET applications.

  C#

  •

  MIT License

  •328328 forks•963963 stars•232232 issues•7575 pull requests•Updated Apr 17, 2026Apr 17, 2026

• installer

  Public
  .NET SDK Installer

  434434 forks•1.3k1.3k stars•2323 issues•33 pull requests•Updated Apr 17, 2026Apr 17, 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•254254 issues•2626 pull requests•Updated Apr 17, 2026Apr 17, 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•211211 pull requests•Updated Apr 17, 2026Apr 17, 2026

• dotnet-monitor

  Public
  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•22 pull requests•Updated Apr 17, 2026Apr 17, 2026

• Scaffolding

  Public
  Code generators to speed up development.

  C#

  •

  MIT License

  •242242 forks•806806 stars•240240 issues•1515 pull requests•Updated Apr 17, 2026Apr 17, 2026

• Silk.NET

  Public
  The high-speed OpenGL, OpenCL, OpenAL, OpenXR, GLFW, SDL, Vulkan, Assimp, WebGPU, and DirectX bindings library your mother warned you about.

  audioopenglcsharp+ 14

  audioopenglcsharpnativegraphicsvulkanopenclglfwgame-developmentopenal+ 7

  C#

  •

  MIT License

  •452452 forks•5k5k stars•8282 issues•1919 pull requests•Updated Apr 17, 2026Apr 17, 2026

• windowsdesktop

  Public
  Shell

  •

  MIT License

  •6464 forks•208208 stars•1313 issues•00 pull requests•Updated Apr 17, 2026Apr 17, 2026

• winforms

  Public
  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 17, 2026Apr 17, 2026

• nbgv

  Public
  The repo behind the dotnet/nbgv GitHub Action

  TypeScript

  •

  MIT License

  •88 forks•5959 stars•22 issues•1010 pull requests•Updated Apr 17, 2026Apr 17, 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•671671 issues•3333 pull requests•Updated Apr 17, 2026Apr 17, 2026