MonoDevelop is a cross platform IDE mostly aimed at Mono/.NET developers
Mono open source ECMA CLI, C# and .NET implementation.
One framework for creating powerful cross-platform games.
Support for the Skia Library
Skia is a complete 2D graphic library for drawing Text, Geometries, and Images.
Open source .NET binding for the Vulkan API
Continuous build system used by Mono and Moonlight.
Tools and libraries to glue C/C++ APIs to high-level languages
System.Drawing implementation using CoreGraphics.
A cross-platform UI toolkit for creating desktop applications with .NET and Mono
Packaging metadata for mono-project.com packages
Docker images, for the Docker container system
Mono.Addins is a generic framework for creating extensible applications, and for creating add-ins which extend those applications.
Temporary repo to hold nuget binaries for use with MonoDevelop
Tools to manage Mono's releases (scripts, web pages, build files)
Browser backends for Mono.WebBrowser