Develop Desktop, Embedded, Mobile and WebAssembly apps with C# and XAML. The most popular .NET UI client technology

Mono open source ECMA CLI, C# and .NET implementation.

Cross Platform Terminal UI toolkit for .NET

This repository has examples of broken patterns in ASP.NET Core applications

The Reactive Extensions for .NET

Fast persistent recoverable log and key-value store + cache, in C# and C++.

Aspire is the tool for code-first, extensible, observable dev and deploy.

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

PerfView is a CPU and memory performance-analysis tool

Extensible tool for weaving .net assemblies

gRPC for .NET

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…

A NuGet Package Manager for Unity

A cross-platform plotting library for .NET

The new future of dotnet/reactive and UniRx.

Tools and libraries to glue C/C++ APIs to high-level languages

The Official C# .NET Driver for MongoDB

Ultra fast and low latency asynchronous socket server & client C# .NET Core library with support TCP, SSL, UDP, HTTP, HTTPS, WebSocket protocols and 10K connections problem solution

Cecil is a library to inspect, modify and create .NET programs and libraries.

.NET language playground

Pure C# 3D real time physics simulation library, now with a higher version number.

Zero Allocation StringBuilder for .NET and Unity.

A framework for building messaging apps with .NET and C#.

The Service Bus Explorer allows users to connect to a Service Bus namespace and administer messaging entities in an easy manner. The tool provides advanced features like import/export functionality…

🎷No ceremony, just code. Blazing fast, typesafe binary serialization.

Demo of the potential of C# for systems programming with the .NET native ahead-of-time compilation technology.

Fluxor is a zero boilerplate Flux/Redux library for Microsoft .NET and Blazor.

World's Fastest .NET CSV Parser. Modern, minimal, fast, zero allocation, reading and writing of separated values (`csv`, `tsv` etc.). Cross-platform, trimmable and AOT/NativeAOT compatible.

A C# parser construction toolkit with high-quality error reporting

Microsoft.Diagnostics.Runtime is a set of APIs for introspecting processes and dumps.