Telegram clients (ios,andriod,windows,osx,linux) are open source. Server is closed but client code and protocol provides user with verified secrecy. Most criti

Telegram clients (ios,andriod,windows,osx,linux) are open source. Server is closed but client code and protocol provides user with verified secrecy. Most criticism seems emotion based but no smoking guns. See comments on http://unhandledexpression.com/2013/12/17/telegram-stand-back-we-know-maths/ http://unhandledexpression.com/2013/12/17/telegram-stand-bac... also see response to the post you linked to http://telegramteam.tumblr.com/post/70588130319/telegrams-cryptanalysis-contest http://telegramteam.tumblr.com/post/70588130319/telegrams-cr... anyway i dont work for them and Surespot also looks nice. though nodejs+coffeescript at the server worries me a bit.