The main form of communication within the Opencast community is its mailing lists. For occasional chat there also is a Matrix room.

Mailing lists

The Opencast mailing lists are hosted using Google Groups. This enables anonymous reading, but posting requires a Google account. Unless otherwise stated, the language used on the list is English.

Mailing listsDescription
security-notices@opencast.orgSecurity announcements (low frequency)
announcements@opencast.orgCommunity announcements (low frequency)
users@opencast.orgUsers list (adopters)
dev@opencast.orgDevelopers list (technical)
anwender@opencast.orgGerman-speaking community list
lms@opencast.orgOpencast/learning management system integration list
annotation-tool@opencast.orgOpencast Annotation Tool list

You can subscribe to each list via Google Groups (linked in the table above) or by sending a mail to [list] (e.g.


For around-the-clock, real-time assistance by both users and developers, we use the Matrix chat system. We use the room #opencast-community on Feel free to join using your favorite Matrix client. A web client is available at To be able to join you will need a Matrix account, either on or on another Matrix home server of your choice.

issue tracking

For issue tracking GitHub Issues is used. For security related issues please write an email to