Check out the map above that RichardF highlighted in this post some time ago. It shows OSM data coloured by the editor software. Blue is potlatch, red is josm, green is merkaartor and grey is anything (say, JOSM or imports) since not all editors declare themselves there is an ‘everything else’ category. And of course it was built by the eponymous Matt.
why is the most work on openstreetmap done in europe!?
but its okay as long as my sourroundings are coverd great 🙂