JOSM - JOSM is a Java-based editor for OpenStreetMap (OSM).
Picmonic - Picmonic transforms forgettable facts into memorable stories and characters
Vespucci - Vespucci is the first OpenStreetMap editor for Android.
Pixorize - Browser-based image annotation and sharing
StreetComplete - Help to improve the OpenStreetMap with StreetComplete!
Sketchy Medical - Sketchy uses stories & pictures to make hard to remember facts a lot more memorable.