josm: JOSM is an extensible editor for OpenStreetMap (OSM) written in josm: Java 1.6. josm: josm: Currently it supports loading stand-alone GPX tracks and GPX track dat josm: from the OSM database as well as loading and editing existing nodes, josm: ways, metadata tags and relations from the OSM database. josm: josm: josm: josm: josm: