The Free Software Media System - Server Backend & API

Develop Desktop, Embedded, Mobile and WebAssembly apps with C# and XAML. The future of .NET UI

.NET Decompiler with support for PDB generation, ReadyToRun, Metadata (&more) - cross-platform!

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

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

Cross Platform Terminal UI toolkit for .NET

A toolkit for developing high-performance HTTP reverse proxy applications.

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

Emby Server is a personal media server with apps on just about every device.

Another fucking c# Steamworks implementation

The P programming language.

Build Cross Platform HTML Desktop Apps on .NET using native GUI, HTML5, JavaScript, CSS, Owin, AspNetCore (MVC, RazorPages, Blazor)

A multitasking monolithic Kernel based x86 targeting Operating System written in C# from scratch aiming for high-level implementation of drivers in managed environment.

Build Cross-Platform Apps with C#, VB.NET, or F# and XAML. One codebase. Six platforms. Powered by WebAssembly and .NET.

A GUI framework for C# console applications

[Archived] Parser and code generator for CSHTML files used in view pages for MVC web apps. Project moved to https://github.com/aspnet/AspNetCore

A Pure C# GNU-Readline like library for .NET/.NET Core

Minecraft server based on Orleans

An easy-to-use overlay library written in C# by Jacob Kemple.

Convert GIFs to XLSX format

C# BitTorrent library

An experiment using Volume to reconstruct Pulp Fiction's dance scene in Augmented Reality

A collection of various data structures and containers for .NET Standard

A fast integer sorting algorithm