Software developed by a Canadian lab to circumvent online censorship has been downloaded by more than 18,000 Iranians in the last 10 days, says its developer Rafal Rohozinski.

A thirst for online freedom in Iran, as well as in China, Myanmar and other authoritarian hotspots, has led to a sudden proliferation of all technologies designed to overcome curbs on news and social networking Internet sites.

“This speaks to the hunger for access to information when it’s being denied,” Rohozinski told AFP.

Iranians angered by the results of the country’s presidential election that returned hardline incumbent President Mahmoud Ahmadinejad to power have been using social and media sites such as Facebook, Flickr and Twitter to communicate and organize.

They have also been posting videos of violent post-election protests and clashes to video-sharing sites such as YouTube.