Hamachi is a centrally-manage zero-configuration virtual private network (VPN) freeware application capable of establishing direct links between computers that are behind NAT firewalls without requiring reconfiguration (in most cases); in other words, it establishes a connection over the Internet that very closely emulates the connection that would exist if the computers were connected over a local area network. Currently available as a production version for Microsoft Windows, and as beta - for Mac OS X and Linux. On August 8, 2006, it was announced that Hamachi was being purchased by LogMeIn.