Top 5 VPN Software Free

1. Hamachi: Hamachi is free VPN software that uses a mediation server to establish peer-to-peer connections over UDP.
   
   
2. OpenVPN: OpenVPN is SSL-based open source VPN software. OpenVPN runs on Windows, Linux and Mac OS X operating systems.
   
   
3. Cisco VPN Client: The Cisco VPN client software supports IPSec connections to Cisco VPN concentrators. This VPN software application runs on Windows, Linux and Mac OS X.
   
   
4. Tinc VPN Daemon: The free Tinc VPN software enables virtual private networking via low-level daemon / network device configuration. Designed originally for Linux / Unix networks, Tinc also works on Windows computers.
   
   
5. FreeS/WAN: FreeS/WAN is an IPSec VPN software solution for Linux networks. Active development of FreeS/WAN has stopped, making this solution of interest mainly to students and researchers.

Fuente Compnetworking