TreePlan 1.70, SensIt 1.31, and RiskSim 2.40 are compatible with Excel 97 through 2007 on Windows and Macintosh.

SensIt 1.21 and RiskSim 2.31 are not compatible with Excel 2007.

To upgrade SensIt and RiskSim with a 50% discount, please visit the Upgrade page.