Tor Browser - Tor is free software for enabling anonymous communication.
Vidalia - Vidalia is a cross-platform graphical controller for the Tor software, built using the Qt framework.
ProxAllium - ProxAllium is a FOSS GUI wrapper for Tor.
Proxifier - Proxifier extends the advantages of a proxy server to network applications that don't natively support it.
Psiphon - Psiphon is circumvention software for Windows and Mobile platforms that provides uncensored access to Internet content. Read more about Psiphon.
Torifier - Torifier is a Tor bundle that lets you tunnel software applications through Tor without the need to reconfigure them.