A recent piece in the PBS IdeaLab looks at a new editor for OSM from MapBox… iD
Why another editor? From the article… OpenStreetMap’s editing tools are complex and do little to help users understand details like road classifications. We want tools for contributing map data to be accessible to anyone, in any language, with any level of computing skill… We’re designing a UI that’s simple and friendly, with a uniform "finished" look that makes it approachable and understandable for new users"
For more about iD from Mapbox see updates in their tech blog