Free Nonlinear Software

DMFitter ActiveX control by RRR

DMFitter ActiveX control allows you to add sophisticated regression analysis tools to your software in a few lines of code. Features include: both linear and nonlinear (Levenberg-Marquardt) least squares curve fitting algorithms, arbitrary user models (defined analytically or by string expressions), event support, weighting. Examples for Excel, VB, Delphi, MSIE, Data Master 2003 and scripting languages are included.

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RaptorAssist by Kidogosoft

Raptor Edit captures screen output into video files. But it uses a clumsy naming scheme. Because many video editing software packages use alphabetical lists, your files appear in alphabetical rather than chronological order. RaptorAssist cures this by renaming your files suitably.

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Data Master 2000 by RRR

Free software for automation of professional measurement systems, data acquisition, processing and analysis. Especially suitable for scientists who would like to make high-performance, precise measurements in the experimental physics. Features include graphic editor, powerful visual tools, wide set of numeric and symbolic calculations, nonlinear Levenberg-Marquardt regression, ActiveX scripting and more.

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Heat Transfer by Optimal Designs Enterprise

A Heat Transfer physics problem is described with equations and shows a Calculus level language used for solving this two point boundary value problem (BVP). The equations being solved may be ordinary differential equations and/or partial differential equations of any order & degree. Equations maybe nonLinear, implicit, any order, any degree and/or constrained.

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RF21 by Christoph Hohmann

Graphing scientific calculator allowing for permanent installation of a user's own commented functions and libraries. It's also an archive capable of holding a lifetime's mathematical work. Integrated searchable database. Numeric features include derivation, integration, Monte Carlo simulations, Runge Kutta, matrix inversion, nonlinear equation systems, function minimizer. Prints plots and exports them to the -.GIF file format.

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