Tor Browser - Tor is free software for enabling anonymous communication.
Proxifier - Proxifier extends the advantages of a proxy server to network applications that don't natively support it.
ProxAllium - ProxAllium is a FOSS GUI wrapper for Tor.
Proxycap - ProxyCap empowers you to divert your PC’s system associations through intermediary servers.
FreeCap - FreeCap - is a program for transparency redirect connections from programs through SOCKS server.
Vidalia - Vidalia is a cross-platform graphical controller for the Tor software, built using the Qt framework.