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C# repos to contribute to

OpenSrc lists 65 C# repositories with open issues for new contributors, and 33 of them are first-PR friendly. Between them they have 940 open good first issues and 1,265 help-wanted issues. The median welcome score is 74/100, and the best-scored right now are dotnet/aspnetcore, dotnet/maui and stride3d/stride. Most are about Game Dev, Databases and Web Frontend.

65 repos by best score

Filter these in the directory

  • dotnet/aspnetcore

    ASP.NET Core is a cross-platform .NET framework for building modern cloud-based web applications on Windows…

    15good first issues+141 help wanted
    • C#
    • Field: Web Frontend
    • Field: DevOps
    • Stars:38.5K
    • MIT
    • CONTRIBUTING
    • replies in ~2d
    Score92 out of 100 contributor score, very welcomingFirst-PR friendly

  • dotnet/maui

    .NET MAUI is the .NET Multi-platform App UI, a framework for building native device applications spanning…

    33good first issues+3 help wanted
    • C#
    • Field: Mobile
    • Field: Web Frontend
    • Stars:23.3K
    • MIT
    • CONTRIBUTING
    Score91 out of 100 contributor score, very welcomingFirst-PR friendly

  • stride3d/stride

    Stride (formerly Xenko), a free and open-source cross-platform C# game engine.

    18good first issues
    • C#
    • Field: Game Dev
    • Field: Graphics
    • Stars:7.8K
    • MIT
    • CONTRIBUTING
    • replies in ~15h
    Score91 out of 100 contributor score, very welcomingFirst-PR friendly

  • MudBlazor/MudBlazor

    Blazor Component Library based on Material Design principles. Do more with Blazor, utilizing CSS and keeping…

    69good first issues+115 help wanted
    • C#
    • Field: Web Frontend
    • Stars:10.6K
    • MIT
    • CONTRIBUTING
    • replies in ~6d
    Score89 out of 100 contributor score, very welcoming

  • unoplatform/uno

    Open-source platform for building cross-platform native Mobile, Web, Desktop, and Embedded apps from a single…

    73good first issues+6 help wanted
    • C#
    • Field: Mobile
    • Field: OS
    • Stars:10.1K
    • Apache-2.0
    • CONTRIBUTING
    Score89 out of 100 contributor score, very welcomingFirst-PR friendly

  • jellyfin/jellyfin

    The Free Software Media System - Server Backend & API

    5good first issues
    • C#
    • Field: Backend
    • Stars:57.6K
    • GPL-2.0
    • CONTRIBUTING
    • replies in ~3h
    Score87 out of 100 contributor score, very welcomingFirst-PR friendly

  • stryker-mutator/stryker-net

    Mutation testing for .NET core and .NET framework!

    11good first issues
    • C#
    • Stars:2.1K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~8h
    Score87 out of 100 contributor score, very welcomingFirst-PR friendly

  • files-community/Files

    A modern file manager that helps users organize their files and folders.

    3good first issues+12 help wanted
    • C#
    • Field: Editors
    • Stars:45.7K
    • MIT
    • CONTRIBUTING
    • replies in ~3h
    Score86 out of 100 contributor score, very welcomingFirst-PR friendly

  • dlemstra/Magick.NET

    The .NET library for ImageMagick

    5good first issues+14 help wanted
    • C#
    • Stars:4K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~28h
    Score86 out of 100 contributor score, very welcomingFirst-PR friendly

  • OrchardCMS/OrchardCore

    Orchard Core is an open-source modular and multi-tenant application framework built with ASP.NET Core, and a…

    5good first issues+1 help wanted
    • C#
    • Stars:8.2K
    • BSD-3-Clause
    • CONTRIBUTING
    • replies in ~5h
    Score85 out of 100 contributor score, very welcomingFirst-PR friendly

  • unitystation/unitystation

    The original unitystation

    56good first issues
    • C#
    • Field: Game Dev
    • Stars:734
    • AGPL-3.0
    • CONTRIBUTING
    Score85 out of 100 contributor score, very welcomingFirst-PR friendly

  • dotnet/runtime

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

    14good first issues+393 help wanted
    • C#
    • Field: DevOps
    • Field: Mobile
    • Stars:18.3K
    • MIT
    • CONTRIBUTING
    Score83 out of 100 contributor score, very welcomingFirst-PR friendly

  • getsentry/sentry-dotnet

    Sentry SDK for .NET

    19good first issues+1 help wanted
    • C#
    • Field: Observability
    • Stars:768
    • MIT
    • CONTRIBUTING
    Score83 out of 100 contributor score, very welcomingFirst-PR friendly

  • dotnet/winforms

    Windows Forms is a .NET UI framework for building Windows desktop applications.

    4good first issues+90 help wanted
    • C#
    • Field: Web Frontend
    • Stars:4.9K
    • MIT
    • CONTRIBUTING
    • replies in ~3d
    Score82 out of 100 contributor score, very welcomingFirst-PR friendly

  • dotnet/sdk

    Core functionality needed to create .NET Core projects, that is shared between Visual Studio and CLI

    25good first issues+25 help wanted
    • C#
    • Field: CLI Tools
    • Stars:3.2K
    • MIT
    • replies in ~6h
    Score82 out of 100 contributor score, very welcoming

  • elsa-workflows/elsa-core

    The Workflow Engine for .NET

    6good first issues+1 help wanted
    • C#
    • Stars:7.9K
    • MIT
    • CONTRIBUTING
    • replies in ~2h
    Score80 out of 100 contributor score, very welcomingFirst-PR friendly

  • Revolutionary-Games/Thrive

    The main repository for the development of the evolution game Thrive.

    100good first issues+17 help wanted
    • C#
    • Field: Game Dev
    • Field: Scientific Computing
    • Stars:3.7K
    • CONTRIBUTING
    • replies in ~30d
    Score80 out of 100 contributor score, very welcoming

  • tryAGI/LangChain

    C# implementation of LangChain. We try to be as close to the original as possible in terms of abstractions…

    12good first issues+12 help wanted
    • C#
    • Field: Machine Learning
    • Stars:1.1K
    • MIT
    • CONTRIBUTING
    Score80 out of 100 contributor score, very welcomingFirst-PR friendly

  • Fervent-Tempo/AF-Media-Bar

    Windows 10/11 桌面上的媒体控制与轻度美化软件。 Media control and minor beautification software for Windows 10/11 desktops.

    6good first issues+15 help wanted
    • C#
    • Stars:727
    • MIT
    • CONTRIBUTING
    • replies in ~2d
    Score80 out of 100 contributor score, very welcomingFirst-PR friendly

  • simple-acme/simple-acme

    A simple cross platform ACME client (for use with Let's Encrypt et al.)

    5good first issues
    • C#
    • Field: CLI Tools
    • Field: OS
    • Stars:628
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~18h
    Score79 out of 100 contributor score, very welcomingFirst-PR friendly

  • dotnet/efcore

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

    3good first issues+5 help wanted
    • C#
    • Field: Databases
    • Stars:14.8K
    • MIT
    • CONTRIBUTING
    • replies in ~5d
    Score78 out of 100 contributor score, very welcoming

  • NethermindEth/nethermind

    A robust, high-performance execution client for Ethereum node operators.

    14good first issues+1 help wanted
    • C#
    • Field: Blockchain
    • Stars:1.6K
    • GPL-3.0
    • CONTRIBUTING
    • replies in ~9h
    Score78 out of 100 contributor score, very welcomingFirst-PR friendly

  • Azure/azure-functions-core-tools

    Command line tools for Azure Functions

    11good first issues+1 help wanted
    • C#
    • Field: CLI Tools
    • Stars:1.5K
    • MIT
    • CONTRIBUTING
    Score78 out of 100 contributor score, very welcomingFirst-PR friendly

  • chummer5a/chummer5a

    Character generator for Shadowrun 5th edition

    8good first issues+4 help wanted
    • C#
    • Stars:636
    • GPL-3.0
    • CONTRIBUTING
    • replies in ~3d
    Score78 out of 100 contributor score, very welcomingFirst-PR friendly

  • bitwarden/server

    Bitwarden infrastructure/backend (API, database, Docker, etc).

    4good first issues
    • C#
    • Field: Databases
    • Field: Backend
    • Stars:20.2K
    • CONTRIBUTING
    • replies in ~1m
    Score77 out of 100 contributor score, very welcomingFirst-PR friendly

  • tgstation/tgstation-server

    A production scale tool for DreamMaker server management

    12good first issues+3 help wanted
    • C#
    • Field: Backend
    • Field: Databases
    • Stars:86
    • AGPL-3.0
    • CONTRIBUTING
    Score77 out of 100 contributor score, very welcomingFirst-PR friendly

  • MaterialDesignInXAML/MaterialDesignInXamlToolkit

    Google's Material Design in XAML & WPF, for C# & VB.Net.

    4good first issues+40 help wanted
    • C#
    • Stars:16.3K
    • MIT
    • CONTRIBUTING
    Score76 out of 100 contributor score, very welcomingFirst-PR friendly

  • SciSharp/LLamaSharp

    A C#/.NET library to run LLM (🦙LLaMA/LLaVA) on your local device efficiently.

    4good first issues+3 help wanted
    • C#
    • Field: Machine Learning
    • Field: OS
    • Stars:3.8K
    • MIT
    • CONTRIBUTING
    • replies in ~4h
    Score76 out of 100 contributor score, very welcomingFirst-PR friendly

  • dotnet/macios

    .NET for iOS, Mac Catalyst, macOS, and tvOS provide open-source bindings of the Apple SDKs for use with .NET…

    18good first issues+14 help wanted
    • C#
    • Field: Mobile
    • Stars:2.9K
    Score76 out of 100 contributor score, very welcoming

  • dotnet/spark

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

    11good first issues+4 help wanted
    • C#
    • Field: Machine Learning
    • Field: Data Science
    • Stars:2.1K
    • MIT
    • CONTRIBUTING
    Score75 out of 100 contributor score, very welcomingFirst-PR friendly

Showing 30 of 65 repos