GameRanger - GameRanger is a free download for Mac and PC that lets you play over 600 games and demos online...
Hamachi - Hamachi is a VPN service scaled to the unique needs of business owners.
NeoRouter - NeoRouter is the ideal remote-access and VPN solution for homes and small businesses.
ZeroTier - Extremely simple P2P Encrypted VPN
SoftEther - SoftEther VPN ("SoftEther" means "Software Ethernet") is one of the world's most powerful and easy-to-use multi-protocol VPN software. It runs on Windows, Linux, Mac, FreeBSD and Solaris.
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.