When purchasing Carlson Software, customers decide on their CAD engine: use built-in IntelliCAD at no extra cost or purchase AutoCAD, sold separately. Carlson programs include Survey, Civil, Hydrology, Mining, GIS, Point Cloud, Field, Natural Regrade, Construction, GeoTech, CADnet, and Trench.
The latest version of Carlson Software programs, Carlson 2018, was released last fall and is built on the IntelliCAD 8.3 engine. It includes new commands such as mleader, selection filters, gradient coloring and etransmit. While stability improvements were the main focus, the new version also has performance improvements such as selection, snapping, multithreaded open and regen.