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Download a 60-days Trial!
Download any of Spider Financial products and start your free 60-days full-featured (Professional version) trial. After the 60-days trial period, NumXL will revert to an indefinite light edition. See why many financial professionals chose NumXL and CalendarXL as their analytic tools.
Download NumXL
The econometric solution for Microsoft Excel. NumXL provides over 50 Econometric functions and 16 pre built workbooks of econometric data series modeling and analysis. 
Download CalendarXL
Perfect compliment to NumXL and financial time series analysis. It provides over 20 Date & Calendar calculation functions within Microsoft Excel.
