Tribler is an open source peer-to-peer client with various features for watching videos online.
Tribler, a bit torrent file-sharing network, has actually been around for five years, operating underneath the radar as users flocked to popular piracy gateways such as the Pirate Bay and BTjunkie. But during that time period, researchers at the Delft University of Technology in the Netherlands were designing Tribler as a way share files without the need for centralized servers. The open-source client uses an overlay network (a computer network built on top of another network) for users to search and download files directly from one another. And since there’s no listing site to index the files, there’s no specified point of which to attack or take it offline.