https://earthexplorer.techmaven.net
is based on fork of Cesium terriajs and works online/offline
Supports 3DTILES URL's and offline 3TZ archive format or .3DTILES zip archives
and CesiumION Assets
Supports offline map tiles from GPKG and MBTILES
Supports offline/online static GIS Files
Supports Mapping Services from ESRI and OGC
https://earthexplorer.techmaven.net is based on fork of Cesium terriajs and works online/offline Supports 3DTILES URL's and offline 3TZ archive format or .3DTILES zip archives and CesiumION Assets Supports offline map tiles from GPKG and MBTILES Supports offline/online static GIS Files Supports Mapping Services from ESRI and OGC