Dose for Excel

dose for excel is a powerful, feature-rich add-in for microsoft excel.
StatPlus:mac

Statistical analysis on a Mac made easy with StatPlus:mac and Microsoft Excel
CDXZipStream

CDXZipStream analyzes address, census, area code data and more in Excel

xlstat is a data analysis and statistics add-in for ms excel
FinOptions XL

excel financial analytics add-in valuing a broad range of options & their greeks