Version 2.0 Beta 3 Now Available
The ArcGIS Editor for OpenStreetMap is a free, open source add-on for ArcGIS for Desktop that helps you become an active member of the growing OpenStreetMap (OSM) community. OpenStreetMap is an open and freely available database of geographic data. The editor makes it easy for you to download OSM data, make changes to the dataset, and contribute those changes back to the entire OSM community.
The OSM Editor provides
The ArcGIS Editor for OpenStreetMap, its documentation, and its source code are available on CodePlex, Microsoft's open source repository, and released under the Microsoft Public License.
For more information, read the documentation and discussions on Codeplex or the flyer