Well there's always Matrix as a better alternative to WhatsApp and Telegram if you find those too much Devil & Beelzebub.
- Matrix is opensource (just like Telegram, not like WhatsApp),
- Marix uses the more stable and proven Axolotl cryptography (like WhatsApp, OpenSecure, etc. not like Telegram's own home-made stuff)
- Matrix doesn't require a new handle, but you can find users based on the coordinates (Number, Facebook ID, etc.) that you already know (unlike XMPP/Jabber. A bit like phone numbers help WhatsApp)
- Matrix servers are opensource too and federated (unlike Telegram. But like IRC and XMPP)
Matrix wants to basically be the "next gen" XMPP/Jabber (with easier search of contacts, support for distributed message log, modern encryption, and some SPAM prevention).

If WhatsApp manage to pisses their users with the whole "Now it's free thanks to sponsored content" fiasco, maybe it's a potential successor, next to Telegram.

Telegram has opensource their client code. Only their servers are proprietary.
So of course it's way easier to develop for it, rather than getting sued into oblivion as soon as look in the general direction of its protocol - in the case of WhatsApp.

(That's why we're stuck waiting for links magically appearing in this thread, where also some forest cats wander. Not that any of us forum knows anything about those cats...)

Speaking of which cats: thank you for your work. Not that we know anything of it.