gretl - homepage of gretl, the Gnu Regression, Econometrics and Time-series Library
@RISK - @RISK is the world's most widely used risk analysis tool.
SAFE TOOLBOXES - SAFE TOOLBOXES is an Excel add-in that enhances Excel capabilities to perform simulations...
RiskAMP - RiskAMP is a full-featured Monte Carlo Simulation Engine for Microsoft Excel.
LIMDEP - LIMDEP is an econometric and statistical analysis software that is used by researchers, students, and professionals from all over the world.
Yasai - YASAI is an open-source Monte Carlo simulation add-in for Microsoft Excel