AvaloniaUI / Avalonia
Develop Desktop, Embedded, Mobile and WebAssembly apps with C# and XAML. The future of .NET UI
AvaloniaUI / Avalonia
icsharpcode / ILSpy
.NET Decompiler with support for PDB generation, ReadyToRun, Metadata (&more) - cross-platform!
QuantConnect / Lean
Lean Algorithmic Trading Engine by QuantConnect (Python, C#)
MaterialDesignInXAML / MaterialDesignInXamlToolkit
Google's Material Design in XAML & WPF, for C# & VB.Net.
duplicati / duplicati
Store securely encrypted backups in the cloud!
dotnet / efcore
EF Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations.
MonoGame / MonoGame
One framework for creating powerful cross-platform games.
abpframework / abp
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.
QuestPDF / QuestPDF
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.
JustArchiNET / ArchiSteamFarm
C# application with primary purpose of farming Steam cards from multiple accounts simultaneously.
aspnetboilerplate / aspnetboilerplate
ASP.NET Boilerplate - Web Application Framework
chocolatey / choco
Chocolatey - the package manager for Windows
dotnet / BenchmarkDotNet
Powerful .NET library for benchmarking
JamesNK / Newtonsoft.Json
Json.NET is a popular high-performance JSON framework for .NET
mRemoteNG / mRemoteNG
mRemoteNG is the next generation of mRemote, open source, tabbed, multi-protocol, remote connections manager.
StockSharp / StockSharp
Algorithmic trading and quantitative trading open source platform to develop trading robots (stock markets, forex, crypto, bitcoins, and options).
kanaka / mal
mal - Make a Lisp
studyzy / imewlconverter
”深蓝词库转换“ 一款开源免费的输入法词库转换程序
cefsharp / CefSharp
.NET (WPF and Windows Forms) bindings for the Chromium Embedded Framework
unoplatform / uno
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.
MahApps / MahApps.Metro
A framework that allows developers to cobble together a better UI for their own WPF applications with minimal effort.
reactiveui / refit
The automatic type-safe REST library for .NET. Refit turns a REST API into a C# interface and generates the HttpClient implementation, with support for HttpClientFactory, pluggable serializers and a testing package.
SignalR / SignalR
Incredibly simple real-time web for .NET
JeffreySu / WeiXinMPSDK
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#.
mouredev / roadmap-retos-programacion
Ruta de estudio basada en ejercicios de código de la comunidad MoureDev para aprender y practicar lógica usando cualquier lenguaje de programación.
OrchardCMS / OrchardCore
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.
SixLabors / ImageSharp
A modern, cross-platform, 2D Graphics library for .NET
MassTransit / MassTransit
Distributed Application Framework for .NET
quartznet / quartznet
Quartz Enterprise Scheduler .NET
louthy / language-ext
C# pure functional programming framework - come and get declarative!
FlaxEngine / FlaxEngine
Flax Engine – multi-platform 3D game engine
jstedfast / MailKit
A cross-platform .NET library for IMAP, POP3, and SMTP.
PrismLibrary / Prism
Prism is a framework for building loosely coupled, maintainable, and testable XAML applications in WPF, Xamarin Forms, and Uno / Win UI Applications..
MessagePack-CSharp / MessagePack-CSharp
Extremely Fast MessagePack Serializer for C#(.NET, .NET Core, Unity, Xamarin). / msgpack.org[C#]
NLog / NLog
NLog - Flexible and Structured Logging for various .NET Platforms
StackExchange / StackExchange.Redis
The Redis client for .NET
aalhour / C-Sharp-Algorithms
:books: :chart_with_upwards_trend: Plug-and-play class-library project of standard Data Structures and Algorithms in C#
Azure / azure-sdk-for-net
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.
ChilliCream / graphql-platform
Welcome to the home of the Hot Chocolate GraphQL server for .NET, the Strawberry Shake GraphQL client for .NET and Nitro the awesome Monaco based GraphQL IDE.
AngleSharp / AngleSharp
:angel: The ultimate angle brackets parser library parsing HTML5, MathML, SVG and CSS to construct a DOM based on the official W3C specifications.
ServiceStack / ServiceStack
Thoughtfully architected, obscenely fast, thoroughly enjoyable web services for all
Cysharp / ZLinq
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.
MapsterMapper / Mapster
A fast, fun and stimulating object to object Mapper
Shane32 / QRCoder
A pure C# Open Source QR Code implementation
akkadotnet / akka.net
Canonical actor model implementation for .NET with local + distributed actors in C# and F#.
HearthSim / Hearthstone-Deck-Tracker
A deck tracker and deck manager for Hearthstone on Windows
stratumauth / app
📱 Two-Factor Authentication (2FA) client for Android + Wear OS
xunit / xunit
xUnit.net is a free, open source, community-focused unit testing tool for .NET.
Cysharp / MagicOnion
Unified Realtime/API framework for .NET platform and Unity.
riok / mapperly
A .NET source generator for generating object mappings. No runtime reflection.
cake-build / cake
:cake: Cake (C# Make) is a cross platform build automation system.
mcintyre321 / OneOf
Easy to use F#-like ~discriminated~ unions for C# with exhaustive compile time matching
MvvmCross / MvvmCross
The .NET MVVM framework for cross-platform solutions, including Android, iOS, MacCatalyst, macOS, tvOS, WPF, WinUI
siteserver / cms
SSCMS 基于 .NET Core，能够以最低的成本、最少的人力投入在最短的时间内架设一个功能齐全、性能优异、规模庞大并易于维护的网站平台。链接是SSCMS推出的全新AI视频开源社区：献丑AI
space-wizards / space-station-14
A multiplayer game about paranoia and chaos on a space station. Remake of the cult-classic Space Station 13.
fluentassertions / fluentassertions
A very extensive set of extension methods that allow you to more naturally specify the expected outcome of a TDD or BDD-style unit tests. Targets .NET Framework 4.7, as well as .NET Core 2.1, .NET Core 3.0, .NET 6, .NET Standard 2.0 and 2.1. Supports the unit test frameworks MSTest2, NUnit3, XUnit2, MSpec, and NSpec3.
npgsql / npgsql
Npgsql is the .NET data provider for PostgreSQL.
elastic / elasticsearch-net
This strongly-typed, client library enables working with Elasticsearch. It is the official client maintained and supported by Elastic.
opentk / opentk
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL, OpenAL & OpenCL. It also includes windowing, mouse, keyboard and joystick input and a robust and fast math library, giving you everything you need to write your own renderer or game engine. OpenTK can be used standalone or inside a GUI on Windows, Linux, Mac.
oxyplot / oxyplot
A cross-platform plotting library for .NET