JOSM bụ onye nchịkọta akụkọ nwere ike imeghe maka OpenStreetMap (OSM) maka Java 8+.

Ọ na-akwado ibunye egwu GPX, onyonyo ndabere, na data OSM sitere na isi obodo yana site na isi mmalite ịntanetị ma na-enye ohere idezi data OSM (ọnụ, ụzọ, na mmekọrịta) na mkpado metadata ha.