ASP.NET Core is a cross-platform .NET framework for building modern cloud-based web applications on Windows, Mac, or Linux.

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

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

One framework for creating powerful cross-platform games.

The official repo for the design of the C# programming language

Open-source platform for building cross-platform native Mobile, Web, Desktop and Embedded apps quickly. Create rich, C#/XAML, single-codebase apps from any IDE. Hot Reload included! 90m+ NuGet Down…

LiteDB - A .NET NoSQL Document Store in a single data file

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

Interactive plotting library for .NET

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

Static site generator for .NET API documentation.

Another fucking c# Steamworks implementation

A .NET library to run C# code in parallel on the GPU through DX12, D2D1, and dynamically generated HLSL compute and pixel shaders, with the goal of making GPU computing easy to use for all .NET dev…

ReportGenerator converts coverage reports generated by coverlet, OpenCover, dotCover, Visual Studio, NCover, Cobertura, JaCoCo, Clover, gcov or lcov into human readable reports in various formats.

Makes life working with units of measurement just a little bit better.

An implementation of StyleCop rules using the .NET Compiler Platform

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

This repo includes .NET Core implementations for various IoT boards, chips, displays and PCBs.

A game made by the Celeste developers in a week(ish, closer to 2)

100+ algorithms & data structures generically implemented in C#

Game examples implemented as .NET console applications primarily for providing education and inspiration. :)

New open-source cross-platform symbolic algebra library for C# and F#. Can be used for both production and research purposes.

Throw in the towel.

A vector and matrix library written in C# using hardware intrinsics

Fixed point math C# library

Fast, low-allocation ports of List, Dictionary, HashSet, Stack, and Queue using ArrayPool and Span.

glTF reader and writer for .NET Standard

Proof-of-concept library for generating HLSL, GLSL, and Metal shader code from C#,

Installer and updater for Guild Wars 2 addons.

Pure C# 3D real time physics simulation library. Repo contains only the 1.X.X versions.