ZeroTier - Extremely simple P2P Encrypted VPN
Hamachi - Hamachi is a VPN service scaled to the unique needs of business owners.
Radmin VPN - Radmin VPN allows you to securely connect computers, located behind firewalls. Download it Free.
Tinc VPN - tinc is a Virtual Private Network (VPN) daemon that uses tunnelling and encryption to create a...
VirtualBox - VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as...
Freelan - You are in control. Why would you trust a closed, proprietary software with your most-sensitive data ? Freelan is open-source and completely free. You know everything about its internals and its source-code.