http://www.unblocked.org/

Unblocked.org is a free anonymous service which aims to bypass internet restrictions (such as web filters, firewalls etc) to give you freedom online. The chances are you are at work, college or school and can never access your favourite sites due to the web filter – use our service to bypass filters.

Not only does Unblocked.org bypass restrictions it also acts as an online anonymous service which protects your identity. We hide your IP, ISP and location so you remain anonymous to every website you visit!