See https://aka.ms/dotnet-discord in the #monovm channel for our primary community location.

newer mono, .NET languages and libraries

LLVM bindings for .NET and Mono, written in C# using ClangSharp (www.clangsharp.org)

DeveelDB is a complete SQL database system, primarly developed for .NET/Mono frameworks

An interpreter for the Lua language, written entirely in C# for the .NET, Mono, Xamarin and Unity3D platforms, including handy remote debugger facilities.

Mono open source ECMA CLI, C# and .NET implementation.

ASP.NET buildpack deployed on top of Mono and XSP.