From their website: “Haystack is a new program to provide unfiltered internet access to the people of Iran. A software package for Windows, Mac and Unix systems, called Haystack, specifically targets the Iranian government’s web filtering mechanisms. Similar to Freegate, the program directed against China’s “great firewall,” once installed Haystack will provide completely uncensored access to the internet in Iran while simultaneously protecting the user’s identity. No more Facebook blocks, no more government warning pages when you try to load Twitter, just unfiltered Internet.

Psiphon, developed by Toronto-based civic activists at The Citizen Lab, is an open-source secure Web browsing tool designed to let people in repressive countries tunnel through government Internet filters. The program allows users with unfiltered Internet access to provide a private, SSL-encrypted Web proxy for use by individuals in firewalled countries.

Psiphon takes a substantially different approach than secure browsing tools like The Onion Router (Tor — the system used in the Anonymous Blogging Guide, listed above). Unlike Tor, it requires zero setup on the part of the user behind the firewall — but at the cost of dispensing with Tor’s absolute anonymity. Read more at http://www.linux.com/articles/59468.