I used to recommend NOT using Pidgin because it had glaring security issues, but a Tor developer named Jacob Appelbaum (ioerror) has done a lot of work to make it more secure. https://developer.pidgin.im/ticket/15286 https://developer.pidgin.im/ticket/15290 He doesn't criticize it as vocally as he used to. https://twitter.com/ioerror/status/239093399045672961 https://twitter.com/ioerror/status/7539468040 Most of the bugs he references have been fixed, so I would give a tentative thumbs up to Pidgin at this point.