The TrutzBox is also used by clubs, groups of friends, schools, industrial projects etc. to communicate with each other safely. Such closed user groups can not only hold video conferences and exchange secure e-mails with several users simultaneously, but also communicate together via one (or more) chat rooms. Such chat rooms are also called Multi User Chat (MUC).

<br/><<br/>

<br/><<br/>

The chat room is then located on the TrutzBox on which the room was created. Participants from another TrutzBox are automatically notified with the invitation and connect to this room.

==== TrutzMeeting: Audio- and Video-Conference Service ====