ahwootech / BRUTAL
A free, open source C# framework for making games, or your own game engine. Direct access to native APIs and Vulkan, with the low-level libraries around them. The foundation under Kitten Space Agency and RimWorld's Waylith engine.
NethermindEth / LeanCIL
LeanCIL is a Lean 4 formal verification framework for .NET programs. It enables machine-checked proofs of correctness and safety against compiled Common Intermediate Language (CIL), supporting applications written in C#, F#, and other .NET languages.
dotnet / aspnetcore
ASP.NET Core is a cross-platform .NET framework for building modern cloud-based web applications on Windows, Mac, or Linux.
AvaloniaUI / Avalonia
Develop Desktop, Embedded, Mobile and WebAssembly apps with C# and XAML. The future of .NET UI
dotnet / maui
.NET MAUI is the .NET Multi-platform App UI, a framework for building native device applications spanning mobile, tablet, and desktop.
jasontaylordev / CleanArchitecture
Clean Architecture Solution Template for ASP.NET Core
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.
aspnetboilerplate / aspnetboilerplate
ASP.NET Boilerplate - Web Application Framework
JamesNK / Newtonsoft.Json
Json.NET is a popular high-performance JSON framework for .NET
dotnet / orleans
Cloud Native application framework for .NET
cefsharp / CefSharp
.NET (WPF and Windows Forms) bindings for the Chromium Embedded Framework
MahApps / MahApps.Metro
A framework that allows developers to cobble together a better UI for their own WPF applications with minimal effort.
dotnet / machinelearning
ML.NET is an open source and cross-platform machine learning framework 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#.
BepInEx / BepInEx
Unity / XNA game patcher and plugin framework
reactiveui / ReactiveUI
A composable, cross-platform MVVM framework for .NET inspired by functional reactive programming. It moves mutable state out of the user interface, keeps each feature's logic in one readable place, and makes applications easier to test. Supports WPF, WinForms, WinUI, .NET MAUI, Avalonia, Uno Platform, Blazor and Android.
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.
MassTransit / MassTransit
Distributed Application Framework for .NET
dotnet / wpf
WPF is a .NET Core UI framework for building Windows desktop applications.
louthy / language-ext
C# pure functional programming framework - come and get declarative!
PrismLibrary / Prism
Prism is a framework for building loosely coupled, maintainable, and testable XAML applications in WPF, Xamarin Forms, and Uno / Win UI Applications..
devlooped / moq
The most popular and friendly mocking framework for .NET
FastEndpoints / FastEndpoints
A light-weight REST API development framework for ASP.NET 8 and newer.
ServiceStack / ServiceStack
Thoughtfully architected, obscenely fast, thoroughly enjoyable web services for all
liangxiegame / QFramework
Godot/Unity3D System Design Architecture
dotnet / MQTTnet
MQTTnet is a high performance .NET library for MQTT based communication. It provides a MQTT client and a MQTT server (broker). The implementation is based on the documentation from http://mqtt.org/.
dotnet / winforms
Windows Forms is a .NET UI framework for building Windows desktop applications.
microsoft / fluentui-blazor
Microsoft Fluent UI Blazor components library. For use with ASP.NET Core Blazor applications
Cysharp / MagicOnion
Unified Realtime/API framework for .NET platform and Unity.
LavaGang / MelonLoader
The World's First Universal Mod Loader for Unity Games compatible with both Il2Cpp and Mono
kerryjiang / SuperSocket
SuperSocket is a high-performance, extensible socket server application framework for .NET. It provides a robust architecture for building custom network communication applications with support for multiple protocols including TCP, UDP, and WebSocket.
borisdj / EFCore.BulkExtensions
Entity Framework EF Core efcore Bulk Batch Extensions with BulkCopy in .Net for Insert Update Delete Read (CRUD), Truncate and SaveChanges operations on SQL Server, PostgreSQL, MySQL, SQLite, Oracle
thomhurst / TUnit
A modern, fast and flexible .NET testing framework
picoe / Eto
Cross platform GUI framework for desktop and mobile applications in .NET
MvvmCross / MvvmCross
The .NET MVVM framework for cross-platform solutions, including Android, iOS, MacCatalyst, macOS, tvOS, WPF, WinUI
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.
Megabit / Blazorise
Blazorise is a component library built on top of Blazor with support for CSS frameworks like Bootstrap, Tailwind, Bulma, AntDesign, and Material.
fluentmigrator / fluentmigrator
Fluent migrations framework for .NET
robinrodricks / FluentFTP
An FTP and FTPS client for .NET & .NET Standard, optimized for speed. Provides extensive FTP commands, File uploads/downloads, SSL/TLS connections, Automatic directory listing parsing, File hashing/checksums, File permissions/CHMOD, FTP proxies, FXP support, UTF-8 support, Async/await support, Powershell support and more. Written entirely in C#.
mongodb / mongo-csharp-driver
The Official C# .NET Driver for MongoDB
SciSharp / BotSharp
AI Multi-Agent Framework in .NET
FastReports / FastReport
Free Open Source Reporting tool for .NET6/.NET Core/.NET Framework that helps your application generate document-like reports
Caliburn-Micro / Caliburn.Micro
A small, yet powerful framework, designed for building applications across all XAML platforms. Its strong support for MV* patterns will enable you to build your solution quickly, without the need to sacrifice code quality or testability.
IronLanguages / ironpython3
Implementation of Python 3.x for .NET Framework that is built on top of the Dynamic Language Runtime.
serenity-is / Serenity
Business Apps Made Simple with Asp.Net Core MVC / TypeScript
nunit / nunit
NUnit Framework
yhuse / SunnyUI
SunnyUI.NET 是基于.NET Framework 4.0+、.NET6、.NET8、.NET9 框架的 C# WinForm UI、开源控件库、工具类库、扩展类库、多页面开发框架。
eventflow / EventFlow
Async/await first CQRS+ES and DDD framework for .NET
ErikEJ / EFCorePowerTools
Entity Framework Core Power Tools - reverse engineering, migrations and model visualization in Visual Studio & CLI
BrighterCommand / Brighter
A framework for building messaging apps with .NET and C#.
velopack / velopack
Installer and automatic update framework for cross-platform desktop applications
m969 / EGamePlay
一个基于Entity-Component模式的灵活、通用、可扩展的轻量战斗（技能）框架，配置可选使用ScriptableObject或是Excel表格. A flexible, generic, easy to extend, lightweight combat (skills) framework based on Entity-Component pattern. Configuration can choose to use ScriptableObject or Excel tables.
Taiizor / ReaLTaiizor
ReaLTaiizor is a .NET WinForms control library that offers a wide range of components and is user-friendly and design-focused.
Alex-Rachel / TEngine
Unity 商用级别开发框架，原生内置 AI 工作流支持，集成 HybridCLR 高性能热更、Obfuz 代码混淆加固、YooAssets 企业级资源管理方案，构建高效、安全、可扩展的工业化开发底座。
zzzprojects / EntityFramework-Plus
Entity Framework Plus extends your DbContext with must-haves features: Include Filter, Auditing, Caching, Query Future, Batch Delete, Batch Update, and more
oqtane / oqtane.framework
Oqtane is an open-source developer productivity platform for building modern .NET applications and websites that run on Web, Desktop and Mobile.
monksoul / Furion
让 .NET 开发更简单，更通用，更流行。
Cysharp / ConsoleAppFramework
Zero Dependency, Zero Overhead, Zero Reflection, Zero Allocation, AOT Safe CLI Framework powered by C# Source Generator.