Tech pages/Multi-User Chat

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Overview

MUC is Multi-User Chat, an XMPP extension for multi-party information exchange similar to Internet Relay Chat (IRC), whereby multiple XMPP users can exchange messages in the context of a room or channel. In addition to standard chatroom features such as room topics and invitations, the protocol defines a strong room control model, including the ability to kick and ban users, to name room moderators and administrators, to require membership or passwords in order to join the room, etc. Because MUC rooms are based on XMPP, they can be used to exchange not only plaintext message bodies but a wide variety of XML payloads.

Specifications

MUC is defined in one primary specification (XEP-0045) and several ancillary specifications:

Implementations

Servers

The following XMPP servers include built-in support for MUC:

  • ejabberd
  • Jabber XCP
  • Openfire
  • Prosody
  • Tigase

External Components

The following standalone components can be used with a wide variety of XMPP servers:

  • mu-conference
  • palaver

Clients

  • Adium
  • Gajim
  • Jappix
  • JWChat
  • mcabber
  • Pidgin
  • Profanity
  • Psi/Psi+
  • Salut à Toi

Libraries

  • AnyEvent:XMPP (Perl)
  • gloox (C++)
  • jabber-net (.Net)
  • libpurple (C)
  • Smack (Java)
  • XMPP4R (Ruby)