Yggdrasil - A proof-of-concept scalable IPv6 meshnet, featuring end-to-end encryption, a unique spanning tree...
Hamachi - Hamachi is a VPN service scaled to the unique needs of business owners.
Bitmask - Bitmask is an open source application to provide easy and secure encrypted communication.
Wippien - Free p2p VPN software - establish personal p2p network with friends from your contact list.Downloads · miniVPN · FAQ · Linux version of free p2p VPN .
FreePN - FreePN is the first open-source peer-to-peer VPN service. It's also fast, secure, and completely free.
Tunngle - For the longest time, it was not possible to play video games online with others. If you wanted to play multiplayer, you had to join your friends in person and play on a single console with multiple controllers. Read more about Tunngle.