So nice to hear it:<p>- We are completely open source under Apache License 2.0<p>- We are working on the federation. Unfortunately there are no production ready federation protocols at all. XMPP is dead.<p>- We are work on multiple devices<p>- We have Android, iOS, Win&#x2F;Lin&#x2F;Mac. Anything else? Windows Phone is dead too, other html5-based phones are not popular yet.<p>- We have two layer TLS with russian and us encryption together. We are in progress in porting Signal&#x27;s end-to-end protocol.<p>- You can use email or phone based auth. Our Email-based auth is named &quot;enterprise&quot;, but it is same as personal.