# XMPP is a communication protocol of instant messaging, VoIP (Voice over IP), videoconferencing. YunoHost provide: * [Metronome](http://www.lightwitch.org/metronome): a XMPP server * [Jappix](/apps): a web XMPP client ## Desktop XMPP client You can connect to your XMPP server with any standard desktop XMPP client, such as [Pidgin](http://pidgin.im/), [Gajim](http://gajim.org), [Jitsi](http://jitsi.org/) or [Adium](https://adium.im/). The credentials to give are : * The first part of your email address (without the @domain.tld) * Your standard YunoHost password Your XMPP server runs on the standard port 5222. Your administrator might need to forward this port if the server is behind a router.