A Free Socks v4 and v5 Client Implementationhttp://www.inet.no/dante/
Dante is a free implementation of the following proxy protocols: socks
version 4, socks version 5 (rfc1928), and msproxy. It can be used as a
firewall between networks. It is being developed by Inferno Nettverk
A/S, a Norwegian consulting company. Commercial support is available.