Windows only: OperaTor combines a thumb-drive-friendly version of the peedy Opera web-browser with transparent privacy through the Tor network. Other than a slight lag when first loading the browser—because you can't see a lightweight proxy loading in the background—the Tor-connected experience was no different than loading regular Opera. That means no configuration or connection settings, which is great for private proxy newcomers. If you don't dig the alternative-to-the-alternatives Opera browser, you can use previously mentioned PortableTor in connection with any portable browser you find out there. OperaTor is freeware, Windows only.