- Earth Resource Mapping - ERMapper
- ERDAS, Inc. - ERDAS Imagine
- ESRI - ArcGIS, Arc/Info and ArcView GIS
- ENVI and IDL - ITT - Formerly Research Systems Inc
- IDRISI - GIS and image processing by Clark University
- MapInfo - Map Database Software
- MicroImages - TNTmips Spatial Data Analysis software and free TNTlite
Free geospatial software
- Bilko - A remote sensing program by UNESCO
- TatukGIS - GIS viewer and free coordinate conversion calculator. Also a GIS editor, SDK, and internet server
- DIVA GIS - A GIS program for the analysis of biodiversity data
- Dinamica - Landscape dynamics modeling software
- DNRGarmin - A Garmin GPS extension to ArcGIS by the Minnesota Dept. of Natural Resources
- Open Source Remote Sensing Site - now defunct
19 May 2008