Haven't tried (or heard of before) Telegram, but I got everyone on my WhatsApp list to switch to Viber, because they have a desktop client. It is a sufficient condition to make Viber better than WhatsApp, and yeah, screw them
Can you tell me on which setup you managed to have this working? I'm on Win 7, tried Chrome, FF, and IE, but nothing gets me passed the "establishing secure connection", which hangs and fails.
It seems there is something that does that on Android, called "Whats Remote": https://whatsremote.com/
(I haven't tried it, I don't have Android)
Perhaps the "litigious ways" of Whatsapp softened?