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Geospatial Monitoring and Modeling Made Accessible

Introducing liberaGIS, the next evolution in geospatial software from Clark CGA. Built on the foundation of IDRISI and TerrSet, liberaGIS offers a streamlined suite of tools for GIS analysis, image processing, and dynamic environmental modeling. This version features powerful capabilities such as the Land Change Modeler, Earth Trends Modeler, and Habitat and Biodiversity Modeler. LiberaGIS retains the essential tools to empower researchers, educators, and professionals to tackle pressing spatial challenges, from land-use planning to environmental monitoring. Learn more.

With a commitment to free and open access, liberaGIS continues the tradition of making world-class geospatial technology available to everyone. Join a global community dedicated to geospatial innovation—download liberaGIS and explore the possibilities!

Download TerrSet liberaGIS

  • Windows 8.1 and above, or Windows Server 2008 and above 
  • Microsoft ACE 2010 or Microsoft Office 2010 or later
  • 1.3 GB hard drive space for application 
  • 7.5 GB hard drive space for tutorial data 
  • 8 GB RAM, 16 GB or more recommended 
  • HD display (1920×1080) or greater recommended
  • TerrSet is not designed to run natively on Linux or MacOS.

TerrSet liberaGIS 
Freeware, streamlined; fixes and enhancements, newly released on December 2, 2024

TerrSet 2020
Includes many enhancements and fixes, posted October 15, 2021

TerrSet 18.31
Includes many enhancements and fixes, posted February 16, 2017

IDRISI Selva
Includes a variety of fixes, posted March 2013

TerrSet liberaGIS 

Terrset liberaGIS Manual
Comprehensive reference with detailed information about operation and maintenance of the TerrSet liberaGIS Geospatial Monitoring and Modeling System.

TerrSet liberaGIS Tutorial
Instructional exercises to aid in understanding of the fundamentals of spatial analysis and modeling that the TerrSet liberaGIS system provides.

TerrSet Previous Versions 

TerrSet 2020 Help System
The TerrSet Help system in .chm format. Provides detailed description of all TerrSet tools. (22MB)

Terrset 2020 Manual
Comprehensive reference with detailed information about operation and maintenance of the TerrSet Geospatial Monitoring and Modeling System. (8MB)

TerrSet 2020 Tutorial
Instructional exercises to aid in understanding of the fundamentals of spatial analysis and modeling that the TerrSet system provides. (5MB)

UNITAR Tutorial Workbooks
A set of tutorial workbooks and data that allows users to explore the use of GIS and image processing techniques.

IDRISI Spanish Manual
A Spanish translation of the IDRISI Guide to GIS and Image Processing, produced by staff at the Argentinean Resource Center, is available to view and download in PDF format. Translated specifically for the Selva version of IDRISI but compatible with other versions. (6MB)

Other Manuals  

Remote Sensing with TerrSet 2020 / IDRISI: A Beginner’s Guide

The Remote Sensing Guide provides a comprehensive introduction to the TerrSet remote sensing software package. With clear instructions and more than 300 color illustrations, the text is ideal for students and professionals seeking a hands-on and guided exploration of the fundamental issues in remote sensing and image processing. This latest version is digital only and compatible with all Terrset versions, including the latest liberaGIS.

Tutorial Data for TerrSet liberaGIS
Download data for the TerrSet liberaGIS tutorial.

Tutorial Data for TerrSet 2020
Download data for the TerrSet tutorial.

Tutorial Data for Remote Sensing Guide 
Download data for Remote Sensing Guide.

Contact Information

Center for Geospatial Analytics

Center Location
Hours of Operation