Below is a list of free proxy servers that are currently accessible over most corporate networks. The list keeps getting updated with new proxy servers and the old proxy servers are removed from the list. You may want to bookmark this page [press ctrl+D] and keep coming back for an updated proxy server list.
Findfreeinfo
Dari.info
Inlinedome.net
U9M.net
oksurf.info
1cup.info
Libraryprox.com
Videoboy.info
Schoolstuff.com
Spywareprotector.biz
Wantfun.info
freeproxy.ch
haozs.net
showlist.info
proxy-list.biz
Hotuniversity.info