A quick question that I don't see an answer to elsewhere: if I download a .osm dataset from Planet.osm (for example) which GIS applications could consume/display this data without translation?
For example, this page says ArcGIS 10 "can use OpenStreetMap as a basemap" - but I'm not sure if that means it will open .osm files or read the data from a service?
So, are there any GIS apps (proprietary or open source) which will read .osm files?
Or perhaps taking a step back: is OSM data meant to be consumed like this, or is OSM meant to be used mostly for dynamic display of mapping on web pages?