1)   CurvFit 5.12.4
A curve fitting program: Lorentzian, Sine, Exponential & Power series are available models to match your data. A Lorentzian series is recommended for real data especially for multiple peaked data. Another improved productivity example.

 2)   Regression Analysis - DataFitting 1.7
DataFitting is a powerful statistical analysis program that performs linear and nonlinear regression analysis (i.e. curve fitting).

 3)   Regression analysis - CurveFitter 4.5.6
CurveFitter program performs statistical regression analysis to estimate the values of parameters for linear, multivariate, polynomial, exponential and nonlinear functions.

 4)   Scientific calculator - ScienCalc 1.1
ScienCalc is a convenient and powerful scientific calculator. ScienCalc calculates mathematical expression. It supports the common arithmetic operations (+, -, *, /) and parentheses.

 5)   Visual Fitting 2.0
Use Visual Fitting to implement linear, nonlinear curve fitting and surface fitting.