Source for the info graphics is now available at
Yes, there are apps for all platforms including Android. For example try #Quicksy if you don't mind sharing phone number, and #blabber or conversations if you don't want to share your phone number. They are interoperable, so users on Quicksy can talk to users on blabber or conversations, once you add contact manually.
@fsfi how are 4. and 5. are not vendor locked? Can I use Tox/Briar on Jami? Or Element/Quickly on Dino app? How does it work?
@fsfi Why not use email? It has the advantage of working on practically everything with internet access and also a 4 billion person user base. It CAN be secured and can have a chat style interface.
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