Unity / XNA game patcher and plugin framework
Tools and libraries to glue C/C++ APIs to high-level languages
Cross platform code coverage for .NET
Cross-platform runtime for cloud, mobile, desktop, and IoT apps
Core functionality needed to create .NET Core projects
Framework for building Windows desktop applications
The GongSolutions.WPF.DragDrop library is a drag'n'drop framework
A library to support tests with throwaway instances of Docker
An advanced, composable, functional reactive model-view-viewmodel
A friendly substitute for .NET mocking libraries
PeachPie, the PHP compiler and runtime for .NET and .NET Core
A popular high-performance JSON framework for .NET
Sisk's request and response processor mainframe source code
Cofoundry is an extensible and flexible .NET Core CMS
Reko is a binary decompiler
NUnit 3 Framework
A cross-platform UI framework for .NET
OpenCV wrapper for .NET
SkiaSharp is a cross-platform 2D graphics API for .NET platforms
CodeBehind is a modern back-end framework under ASP.NET Core.
A comprehensive design patterns library implemented in C#
Open source web application framework for ASP.NET core
Git + .NET/Mono
A free, open-source, and cross-platform big data analytics framework
Ethereum .Net cross platform integration library