One of the ways you can contribute to fosm, is to update the map data in the database. However before you can start you will need to register for a user account if you have not already done and sign on. There currently 2 ways to edit the fosm database. 1. JOSMEdit 2. MerkaartorEdit Retrieved from "https://fosm.fandom.com/wiki/Contributing_to_fosm?oldid=4030" Categories: Contribute Content Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.