Mapbox client meant to browse/download content from geoserver WFS endpoints
Download as a zip and extract to $GEOSERVER_DATA_DIR/www/gsmapbox or similar location, then access by browsing to https://mygeoserverurl/geoserver/www/gsmapbox/index.html and use to query/preview/download WFS resources.
Currently using a restricted mapbox token, this will only work on whitelisted domains, switch with your own for other usage.