Important and exciting news for the Terrset/IDRISI Community:

Effective December 2, 2024, a new open access version of  TerrSet/IDRISI will be released. Made possible by our merger with the new Clark Center for Geospatial Analytics, the new version will be free to all users. This is the realization of a 37-year dream – to make the software accessible to everyone, everywhere.  

Between now and December 2, a series of progressive discounts will be applied as follows: 

• Starting Aug. 28, 2024, all licenses and renewals will be 25% off. 

• Starting Oct. 1, 2024, all licenses and renewals will be 50% off. Low-income country discounts, organizational pricing and student starter licenses will end. 

• Starting Nov. 1, 2024, all licenses and renewals 75% off. 

• Starting Dec. 2, 2024, all licenses are free. 

The new version, our 20th release, will have some changes. While we are still finalizing the details, you can expect an improved Land Change Modeler including support for Jurisdictional and Nested REDD (JNR), an important new tool for climate teleconnection analysis in the Earth Trends Modeler and a major suite of tools for raster editing. The system will also be streamlined. We will be removing some links to external software tools that have been discontinued, such as the standalone GSTAT, the MAGICC/SCENGEN 5.3 tools from NCAR and the standalone ECOCROP database from the FAO. As a consequence, we will be removing much of the Climate Change Adaptation Modeler, with the exception of the Sea Level Rise Impact panel and the Bioclimatic Variables panel. Similarly, we plan to discontinue the Ecosystem Services Modeler since more up to date and open-source tools are available directly from the Natural Capital Group. The final list of features will be updated in the late autumn. 

IDRISI was first released in 1987, as the first GIS developed specifically for a microcomputer platform. The goal was to provide an accessible system that could perform professional level analyses with a minimum of computer resources. This required a special focus on algorithms that could function in a low-RAM environment and would require no more resources than those typically available on home and office microcomputers. Our special orientation has always been to the needs of scholars in the developing world. With this 20th release, TerrSet/IDRISI will finally be set free. Accordingly, we are calling this edition liberaGIS. The word liberagis in Esperanto means liberated, set free. It is the past participle of the word libera, which simply means free. 

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