Probably, yeah, though I'm not familiar with the ecosystem yet. It seems like ejabberd is written in erlang, which is promising.
I highly recommend ejabberd: it's one of the easiest server software I ever had to sysadmin. It's rock-solid and never gets in your way. It also packs everything you need for modern instant messaging and audio/video calls. Install it, open few firewall ports, define some DNS SRV records, and you are good to go.
> which is promising.
I mean, ejabberd is what WhatsApp and FB Messenger started from :-)