nonlinear regression Software

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. NLREG includes a programming language similar to C that you use for describing the function to be fitted. Two dimensional line and three dimensional surface plots can be generated.

DataFit 9.0
DataFit is a tool used to perform nonlinear regression (curve fitting), statistical analysis & data plotting. Fit equations with up to 100 parameters to data with up to 20 independent variables. Define your own equations or choose from over 600 pre-defined equations. Results include customizable 2D/3D plots, as well as detailed fit information. Export code in BASIC or C to use an equation in a user written program. Easy to learn and use.

Data Master 2003 11.8.0.335
Programmable scientific and technical graphics optimized for automation of test and measurement systems, data acquisition and post-process. You can visualize, edit and analyze data produced by any instruments with RS-232 interface or another numerical data sources. Features include extensible set of numeric and symbolic calculation tools, nonlinear Levenberg-Marquardt regression analysis, ActiveX-compatible scripting environment and more.