Khabarnitsa - helps metal detecting enthusiasts manage their finds by indicating them on the map. Each find can be associated with an item from the catalog, for example, a Coin of such and such denomination and year.
All finds are conveniently displayed on the map, which makes it easier to further search the area. Statistics will help you understand how many and what kind of finds were found over a certain period.
Hundreds of ancient maps will help you figure out what was in a particular place 100, 200 or more years ago.