It's a desktop (Windows) map viewer. I have built my own OSM server to pre-generate tiles so my app has offline capabilities (I have a very slow internet conne

It's a desktop (Windows) map viewer. I have built my own OSM server to pre-generate tiles so my app has offline capabilities (I have a very slow internet connection so online maps are quite laggy). I use it mostly to build routes that I export as gpx files to my Android phone (vehicle nav with Osmand and trekking with Iphigénie).