With MapComplete you can enrich OpenStreetMap with information on a single theme. Answer a few questions, and within minutes your contributions will be available around the globe! The theme maintainer defines elements, questions and languages for the theme.
MapComplete always offers the next step to learn more about OpenStreetMap.
Did you notice an issue? Do you have a feature request? Want to help translate? Head over to the source code or issue tracker.
Want to see your progress? Follow the edit count on OsmCha.