What is a .NMF file?
The .NMF file is a type of map file that you can create using a program called ArcGIS Explorer. ArcGIS Explorer is a free program made by a company named ESRI, and it lets you look at and make maps. These .NMF files can include lots of different things like the shape of the land, where things are located, places that are interesting, shapes you draw, effects that make the map look 3D, and other items you might find on a map. You can also use these files to keep track of directions, paths you want to take, and how far things are from each other. People use .NMF files to save the maps they make, load them again later, and share them with others over the internet.
To open an .NMF file, you can use the ESRI ArcGIS Explorer program. This is the main program designed to work with these files. If you have ESRI ArcGIS for Desktop, you can also open .NMF files with it. Besides these programs, you could have used to open .NMF files directly in web browsers like Microsoft Internet Explorer or Mozilla Firefox if you had the ArcGIS Explorer plug-in. However, the plug-in option has been discontinued, which means it might not be available or supported anymore.
In summary, if you have a .NMF file, it's a map file for ArcGIS Explorer. You can open it mainly with the ArcGIS Explorer program or ArcGIS for Desktop to view or edit the map inside.
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