Memory-Map Navigator overlay object
File type: GIS, GPS navigation and map file
An mmn file extension identifies an overlay object used by Memory-Map Navigator.
File type category:
GIS, GPS navigation and map file
Date updated: October 12, 2026
Memory-Map Navigator is a full-featured GPS navigation package for Microsoft Windows. It displays high-quality raster images of topographic maps, nautical charts and aerial photographs.
The mmn file stores an overlay object for use with the maps displayed in Memory-Map Navigator.
Open the mmn file in Memory-Map Navigator on Microsoft Windows. The software can use the file as an overlay object alongside its maps.
There is no way to convert mmn files to other formats. The file is intended for use as an overlay object in Memory-Map Navigator.
Software applications that can open mmn files:
Microsoft Windows
Software apps that create mmn files:
Microsoft Windows
Software applications that handle other tasks involving mmn files:
Microsoft Windows
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