Wippien can establish direct P2P (peer to peer) VPN between each contact. It is also instant messaging client with support for many known protocols, such as ICQ, MSN, AIM, Google Talk.Not only it is FREE, you can even obtain its source code. You can download and use Wippien for free, both for personal and commercial usage.
v2.5 [Apr 27, 2011]
This version has Gmail fix.
