About Us

The Company

For over 20 years, TreeAge Software, LLC has been the global leader in the development of decision analysis software. TreeAge Software is a privately held company headquartered in Williamstown, Massachusetts.

Our Product

TreeAge Pro is the leading visual tool for creating and analyzing decision trees. Create decision trees of unlimited complexity for any type of decision. The finished model can then be analyzed to choose the optimal strategy as well as measure the effect of uncertainty on that strategy selection.


Our TreeAge Pro software is used in a wide array of industries, including healthcare, legal, oil & gas exploration, management consulting, investments, teaching, etc.


TreeAge Software has earned the trust of more than fifteen thousand customers worldwide who have used our software to build and analyze models. Customers use TreeAge Pro all over the world, including the US, Europe, Latin America, Asia, Australia and Africa.