ExcelFIX Excel File Recovery 

ExcelFIX is a Microsoft Excel recovery software utility designed to restore corrupt or damaged files that cannot be opened back into a new trouble free Excel file. ExcelFIX is number one in its category and the best option for excel file recovery.
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TriLookup 

Excel add-in with eleven powerful worksheet functions for 1, 2 and 3 variable lookup and interpolation (closest-value, linear, piecewise parabolic or hyperbolic, cubic spline) and polynomial curve fitting. Includes online help and example workbooks.
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TriLookup Mac 

Excel add-in with eleven powerful worksheet functions for 1, 2 and 3 variable lookup and interpolation (closest-value, linear, piecewise parabolic or hyperbolic, cubic spline) and polynomial curve fitting. Includes online help and example workbooks.
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