Does Spark require Openfire to work?

New to Spark.

Does Spark require Openfire to work? Or can it run without it?

Spark requires an XMPP-Server

any server will do: openfire, ejabberd,

for a complete list of available server software go to http://xmpp.org/xmpp-software/servers/

Thank you! Installed and I am running! (A newbie so this is awesome.)