Prosody is a server for Jabber/XMPP written in Lua. It aims to be easy to use and light on resources. For developers, it aims to give a flexible system on which to rapidly develop added functionality or rapidly prototype new protocols. Before you can run prosody you'll need to look in README.SBo. You need a "prosody" user and group prior to building prosody. Something like this will suffice for most systems: groupadd -g 274 prosody useradd -u 274 -g 274 -s /sbin/nologin -d /var/lib/prosody prosody Feel free to use a different uid and gid if desired, but 274 is recommended to avoid conflicts with other stuff from SlackBuilds.org.