MATSim is currently a joint effort by the following groups:
In addition, we stay in close contact to other research groups using and extending MATSim, for example in Toronto (Canada), Pretoria (South Africa), Karlsruhe and Munich (both Germany), Singapore. After all, MATSim is an open source project, feel free to join us on user meetings, conferences or submit patches to gain some glory within the MATSim community!

In 2012, we had a meeting to discuss strategic and conceptual issues in a small group.
Some members of the MATSim Core Development Group in Fall 2011 during the yearly core developer meeting.
Attendants of the MATSim User Meeting 2009.