Program: Tribler
License: GNU Lesser GPL
Description: Tribler is an open source Peer-to-Peer client with various features for watching videos online. It supports standard features such as key word searching for content and segmented downloading. It is available for Linux, Windows and Mac OS X, but as it's using the Python programming language it is possible to run on any Python supported platform. For the user interface it uses wxPython.
Website: https://www.tribler.org/
Other: Cross-Platform -> Windows, Apple, Ubuntu