Windows only: PortableTor is a thumb drive friendly version of the popular anonymous browsing software, Tor. The application is actually a tweaked bundle of the Tor-GUI Vidalia and the proxy-server Privoxy. Once you extract PortableTor and fire it up, it automatically launches the two apps and connects to the Tor network. From there out all you have to do is make sure that your web browser is configured to use 127.0.0.1:8118 as a proxy and all your traffic will be sent on a privacy-producing trip through the many layers of the Tor network. If this is your first introduction to Tor, make sure to check out out how to browse the internet anonymously with Tor. PortableTor is freeware, Windows only.