Ibasa 

Silk is a library and application (Weave) to expose features of CIL that aren't available in all CIL high level languages.

Ibasa.Ripple is a library for interacting with the Ripple network and data.

Ibasa.Pikala is a .NET library for for pickling object graphs, it's designed to solve the same problems as python cloudpickle but for dotnet.

Fable bindings for Babylon.js