[andrey_utkin]

Enough of fenced services owning the users. I'm fed up with carouselle of new services for same features. I'm going to stick with XMPP, which is openly federated and free as in freedom. It is now technically capable of chat sync, sent messages editing, end to end encryption (there are alternative modes to fit different usecases), videocalls, and many more things. There are working gateways to many other networks, including Skype (not fully, but mostly enough to start transition away from skype).

[Veratyr]

XMPP could be a fantastic option but it's missing push notifications, which are an absolute killer these days. You either don't use XMPP on mobile or take a massive hit to your battery.

ChatSecure has a nice writeup about this: https://chatsecure.org/blog/fixing-the-xmpp-push-problem/

[edhelas]

Conversations have Push Notification support https://github.com/siacs/Conversations/issues/1171. There is a standard and it's implemented in some XMPP servers as well.