Tunngle is free virtual private network (VPN) software and allows any interested parties to extend their local area network (LAN) to include computers at remote locations around the world. It is a free, but ad-supported game chat application that's fun and well-designed.
Here are some screenshots to illustrate the features and user interface of this application:
BitTorrent
qBittorrent
qBittorrent Portable
Tixati
Tribler