Mailing Lists:
The OmegaT developers' list. This list is for more technical discussion of features and development, and is intended for OmegaT developers and other interested parties.
This mailing list is for localizers of OmegaT.


User Groups:
OmegaT user group
The user group serves as the main point of contact between users and the project team. Messages are public.


Discussion Boards:


Chat Rooms:
#omegat on freenode