Mapper since: September 27, 2016
Mapper in Brisbane, Australia. I will be running events in Brisbane, so stay tunned.
StreetComplete - Easy to use surveying app on Android, Very useful for adding information to already mapped objects!
Field Papers - Good for making print outs of the map
CityZen - Lightwieght, focused on privacy. Lets you find POI in your city, has some basic editing function. No offline.
OpenTopoMap - See topography!
OSM Buildings - See the map in 3D!
Reddit Thread - Check this post out for other cool tools!