.GND file extension

This is the basic program to work with .GND extension

ArcGIS License Manager

ArcGIS License Manager Geography Network File

The program works with the following extensions: gnd, mxd, mxt, sxd, sxt, 3dd and 3dt

.GND extension is also supported by the following programs:

PLTS for ArcGIS - Foundation

PLTS for ArcGIS - Foundation Geography Network File

PLTS for ArcGIS -Foundation is a collection of turnkey software applications.
ArcView GIS Version

ArcView GIS Version Geography Network File

ArcGIS for Desktop

ArcGIS for Desktop Geography Network File

Easily create and share information with individuals, groups, or organizations.