What XMPP Client do you recommend?
If you’re using Linux,
Then Dino. But Gajim is a 2nd option.
Gajim audio calls work for Linux only, and NOT on Windows.
If you’re using Android,
Monocles has good texting sync with Linux Dino.
But Cheogram is excellent on it’s own.
If you’re using Windows,
Gajim is great for texts, but can’t do audio call for Windows. You have two audio call options:
Option 1) Mov.im in a Web browser, the pro is this is easy. The con is they see your password because it’s in a browser.
Option 2) Unofficial release of Dino for Windows, which I haven’t personally tried and may have problems:
https://github.com/LAGonauta/dino/releases
If you’re using iPhone,
You have two choices
Option 1) Snikket’s iOS app,
Option 2) Siskin, which Snikket is based on,
If you’re using Apple/Mac computers,
Your 2 choices are:
Option 1) the same mov.im in a browser as Windows
Option 2) Beagle.im