Ultrasurf is free proxy software which allows you to surf anonymously and break internet censorship to visit any public web site irrespective of any blocking firewall or software.
Ultrasurf is one such amazing tools for anonymous browsing which you can easily use with the browsers like IE, Firefox.
Ultra surf is compatible with widows XP and vista also, Ultrasurf has been there for about 6 years with daily hits over 300 million and daily traffic of over 5000 GB.