Offline Map Maker is a tool that help you to get offline tile images from many online maps providers, including 500+ maps types.

It supports multi-zoom level images download, supports kml and gpx as input parameters, can output html files for leaflet, openlayers and googleapi, can output bmp, jpg, tif, png, ecw, sgi, img, kmz as a big map, can output mbtiles for mobile apps to use.

VirusTotal:
https://www.virustotal.com/gui/file/5c7c19fe19327a86be0b7c527e4cc4abe46488dd032301005aa8eab09fa1d9f8
https://www.virustotal.com/gui/file/bc9b83ec3570ce041a3d7b481ee9b747f835fcf96af33c15a739db98496f8eb9