SAFE TOOLBOXES - SAFE TOOLBOXES is an Excel add-in that enhances Excel capabilities to perform simulations...
Yasai - YASAI is an open-source Monte Carlo simulation add-in for Microsoft Excel
Mplus - Mplus is a statistical modeling program used by social scientists, health researchers, market researchers, and educators.
Invantive Control for Excel - Invantive Control enables you to make decisions with Microsoft Excel and yet remain fully compliant...
gretl - homepage of gretl, the Gnu Regression, Econometrics and Time-series Library
CData Excel Add-Ins - Excel Add-In for mass imports / exports / updates, data cleansing & de-duplication and data analysis.