A free, open-source, and cross-platform big data analytics framework
Sasa is a collection of organized extensions to the .NET framework.
Emgu CV is a cross platform .Net wrapper for OpenCV
Machine learning, computer vision, statistics and computing for .NET
An advanced audio library, written in C#. Provides tons of features
An open source fork of Windows Live Writer
3D .NET engine for Windows, Linux, Mac
Command-line application library