MonoDevelop is a cross platform IDE mostly aimed at Mono/.NET developers
Mono open source ECMA CLI, C# and .NET implementation.
Cecil is a library to generate and inspect programs and libraries in the ECMA CIL form.
Support for the Skia Library
Build & packaging system, responsible for the Mono project distribution for Mac
Skia is a complete 2D graphic library for drawing Text, Geometries, and Images.
Tools and libraries to glue C/C++ APIs to high-level languages
Custom version of Boring SSL used by Mono
The Microsoft Build Engine (MSBuild) is the build platform for .NET and Visual Studio.
Open source .NET binding for the Vulkan API
The mono-tools package contains a series of extra tools for Mono users.
Packaging metadata for mono-project.com packages
Gtk# is a Mono/.NET binding to the cross platform Gtk+ GUI toolkit and the foundation of most GUI apps built with Mono
A cross-platform UI toolkit for creating desktop applications with .NET and Mono
Continuous build system used by Mono and Moonlight.