StreetComplete - Help to improve the OpenStreetMap with StreetComplete!
Vespucci - Vespucci is the first OpenStreetMap editor for Android.
Go Map!! - Go Map!! is an iPhone/iPad editor for adding cartographic information to OpenStreetMap.
iD - iD is an OpenStreetMap editor programmed in JavaScript with the aims to be simple and friendly.
MapComplete - MapComplete is an OpenStreetMap viewer and editor. It shows map features on a certain topic, and allows to see, edit and add new features to the map. It can be seen as a webversion crossover of StreetComplete and MapContrib.
JOSM - JOSM is a Java-based editor for OpenStreetMap (OSM).