Hamachi - Hamachi is a VPN service scaled to the unique needs of business owners.
Polipo - A small and fast caching web proxy (a web cache, an HTTP proxy, a proxy server).
Wippien - Free p2p VPN software - establish personal p2p network with friends from your contact list.Downloads · miniVPN · FAQ · Linux version of free p2p VPN .
ExaProxy - ExaProxy is a a high-performance non-caching proxy.
Tunngle - For the longest time, it was not possible to play video games online with others. If you wanted to play multiplayer, you had to join your friends in person and play on a single console with multiple controllers. Read more about Tunngle.
Privoxy - Privoxy helps users to protect their privacy.