If you want to bypass any web filter or proxy server blocking any site, you can use Opera with Tor to safely and anonymously view or download whatever you want, because it uses the Opera (Internet Suite), so its really, really fast and the Tor network leaves no trace or history.
Plus This Opera Tor Bundle can be run off any disk: USB, network drive or hard drive.
Opera Tor - Opera + Tor + Privoxy
It's basicially a pre-configured bundle and optmized with the Opera Browser, The Onion Router and Privoxy. Just Run: Tor, Privoxy and Opera or click on "Start" in the bundle folder and freely surf away.
You can use these sites to confirm that your orginal IP and location were hidden.
1. Very Fast.
2. Tabbed browing.
3. Mouse Gestures.
4. The Most secure.
5. Lightweight RAM usage despite heavy feature set.
6. Content Blocker (Ad block).
7. Download Manager.
8. Extremely stable.
9. Basic BitTorrent support.
10. Thousands of Skins/Themes
11. Excellent community support.