LGPL v2.1

A file archiver that supports various compression formats and offers high compression ratio and strong encryption

A framework for scientific computing in .NET covering numerical linear algebra, numerical optimization, statistics, machine learning, artificial neural networks, signal and image processing areas.

A free, open-source media player for the command line that supports various media file formats, audio and video codecs, and subtitle types

A multimedia player supporting a wide range of audio and video formats, CDs, DVDs, VCDs, and streaming protocols