Remobo - http://www.remobo.com/
pLan - http://plangc.ru/
Hamachi - http://logmein.com/
Tunngle - http://www.tunngle.net/
Comodo - http://www.comodo.com/home/remote-pc/vpn-access.php
OpenVPN - http://openvpn.net/
Garena - http://intl.garena.com/