JOSM is an extensible editor for OpenStreetMap (OSM) written in Java

Currently it supports loading stand-alone GPX tracks and GPX track data from the
OSM database as well as loading and editing existing nodes, ways, metadata tags
and relations from the OSM database. 

Josm is very active so it is highly recommended to install the latest version
http://josm.openstreetmap.de/download/josm-tested.jar
and execute the script with VERSION=tested

The script will automagically find the version number in packaging.