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...
Zingtree - Build your own question & answer style troubleshooters
LIMDEP - LIMDEP is an econometric and statistical analysis software that is used by researchers, students, and professionals from all over the world.
TreePlan - TreePlan helps you build a decision tree diagram in an Excel worksheet using dialog boxes.