How about an ejabberd extension
XMPP is an increasingly popular protocol now and ejabberd is a great XMPP server with a web interface. Please consider adding this to your extensions catalogue.
At the moment we do not have a plan for ejabberd extension. But you can create this extension by yourself with help of this tutorial: https://docs.plesk.com/en-US/obsidian/extensions-guide/plesk-extensions-in-a-nutshell.76331/