...Based on Firefox, Torpark is a free web browser that allows you to surf the net anonymously. "Plug it into any internet terminal whether at home, school, or public. Run Torpark.exe and it will launch a Tor circuit connection, which creates an encrypted tunnel from your computer indirectly to a Tor exit computer, allowing you to surf the internet anonymously. How much does Torpark cost? IT'S FREE." "The Torpark tool has been created by Hacktivismo - an international coalition of hackers, human rights workers, lawyers and artists.
Torpark uses the Tor network of internet routers set up by the Electronic Frontier Foundation that already has tens of thousands of regular users.
Whenever any computer connects to the net it freely shares information about the address it is using. This is so any data it requests is sent back to the right place.
The Tor network tries to stop this information being shared in two ways. First, it encrypts traffic between a computer and the Tor network of routers - this makes it much harder to spy on the traffic and pinpoint who is doing what.
Second, the Tor network regularly changes the net address that someone appears to be browsing from - again this frustrates any attempt to pin a particular browsing session on any individual." BBC