1)   Auto2Fit 3.0
Auto2Fit is a robust, flexible, easiest-to-use regression, curve fit, global optimization, equation solving and parameter estimation program by using Evolution Algorithms (EAs).
Nonlinear Regression, Global Optimization, Genetic Algorithms, Parameter Estimation, Curve Fit,

 2)   NLREG 6.2
NLREG performs nonlinear regression and curve fitting. NLREG fits a mathematical function whose form you specify to a set of data values. Virtually any type of function can be fitted.
nonlinear regression, curve fitting, regression, modeling, surface fitting,