Frozen Chat seems to be removed from the Play Store, and I can't find many references to it online. Never heard of it before.

Anybody using Wire? I've recently been looking for a skype replacement myself and seems like wire is a pretty good fit.

I always wonder why few people here acknowledge Telegram, is it little know or is it not considered secure enough?

There's also Conversations, an Android XMPP client that supports OTR/OMEMO.