Are you sure you really want to try to unblock a website through software? If you are looking for a way to unblock a website, don't be dupped into thinking you have to buy some special software, or use an unblocking website. You can learn how to unblock a website for free!
But if you are still looking for a software or web-based solution for getting around that Internet Filter, then take a look at some of the software solutions below (not ranked in any way).
Other links on this site: Website Unblockers | Learn how a web-based proxy works | List of unblocking software