Tor Messenger is not truly anonymous, for nowĭespite working via Tor, which allows the exchange of messages via anonymous Internet relays, masking the location of the people involved in the chat, there are some downsides as well. The client currently supports OTR (Off-the-Record) messages, a multilingual interface, and transport networks like Jabber (XMPP), IRC, Google Talk, Facebook Chat, Twitter, and Yahoo!. Tor Messenger comes with versions for Windows, Mac, and Linux users. XUL is also a technology deployed with Firefox, the browser upon which the Tor Browser was built. The team eventually went with Instabird because it was built on XUL (XML User Interface Language), a technology the Tor team had experience with. Instabird and not Pidgin was chosen as the base for Tor Messenger Pidgin was the other candidate the Tor team considered. Tor's IM client wasn't created from scratch but coded on top of Mozilla's Instabird IM chat client. Today marks the first beta version for Tor Messenger. The TOR team has been working on this product for quite some time now, with three alpha versions distributed for internal testing via the project's mailing lists.

The Tor Project has just announced the first public availability for Tor Messenger, a desktop IM client that works on top of the Tor network.

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