osn2osm
Transform OpenStreetMap notes *.osn to *.osm file.
Usage
wget -qO- http://planet.openstreetmap.org/notes/planet-notes-latest.osn.bz2 | bzcat | python osn2osm.py
About notes
Info - http://wiki.openstreetmap.org/wiki/Notes.
Dumps - http://planet.openstreetmap.org/notes/.
OsmAnd
Convert for OsmAnd *.osm to *.obf - http://wiki.openstreetmap.org/wiki/OsmAndMapCreator