The messenger itself seems to be an (allegedly) open-source product that is only available to "premium members". Nowhere could I see a license nor source.
Price seems to be low enough not to matter but I'm not paying if it's not MIT/GPL or any other O.S. license (I'm not saying it isn't, I just can't find it).
http://i.imgur.com/tUteVRV.png
Price seems to be low enough not to matter but I'm not paying if it's not MIT/GPL or any other O.S. license (I'm not saying it isn't, I just can't find it).