[ossguy]

Such a meta XEP exists already: https://xmpp.org/extensions/xep-0387.html#im

If you use a client that conforms to the Advanced Client requirements of the IM and Mobile Compliance Suites (with a similarly up-to-par server), you will have a very good experience.

[nextos]

The problem is that selection is still limited if you factor in OMEMO support (end-to-end encryption):

https://omemo.top/

[detaro]

Recommendations for good clients for desktop systems? Maybe my google-fu is particularly weak today, but I couldn't find a clear statements which clients outside conversations.im fullfill those (obviously only the IM suite, since mobile wouldn't apply)

[ossguy]

https://gajim.org/ tends to be best for desktop (binaries exist for most desktop OSes).

For macOS, you may want to try Adium or Psi. Or you can use https://movim.eu/ which, though a web client, has fairly good feature support as well.

[Shoothe]

I second Gajim especially 1.0.0 version that looks good. There is also https://dino.im but that's still in alpha.

[detaro]

thanks you two, will give Gajim a try!

[Shoothe]

Remember to install some essential plug-ins (OMEMO, HTTP Upload, URL image preview, etc.) for the best experience :)