- Converting GIS data from GRASS to ArcInfo - Grass2Arc and Grass2Grid for converting v4.x GRASS data files to ArcInfo. Unix based, 1996.
- Dave and Harvey's Slope Stability Package - This tool collection calculates slope stability for a Digital Elevation Model.
- Eykamp's GIS Tools - Explanations of scalebars, embedding perl code, passing parameters, and distributed backups.
- Map Gallery Macro - Launches a menu for user input, makes a screen capture of an Arcplot window, creates a GIF image and copies it to a directory on the web server, then adds a link to the index file. USGS Patuxent Wildlife Research Center.
- Rocky Mountain Mapping Center Software Library - A variety pack including DEM and DOQ conversion, hillshades, mosaicking, clipping, plotting, scalebars, and UTM Zone determination.
