Nonlinear
DataFitX 2.0

DataFitX is a COM component (in-process ActiveX DLL) which allows you to add a powerful nonlinear regression (curve fitting) engine to your software with just a few simple lines of code. Since DataFitX is developed using COM technology, it can be used in any software or development environment that supports COM, including Microsoft Visual Basic, Microsoft Visual C++, Delphi and VBA (Microsoft Excel, Microsoft Access or any VBA enabled client).
- License: Commercial
- Language: English
- Release: 2004-01-30
- Size: 2 Mb
- Cost: 549.00 $
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.
- License: Commercial
- Language: English
- Release: 2008-06-08
- Size: 7 Mb
- Cost: 249.00 $
DMFitter ActiveX control 11.8.0.386

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.
- License: Freeware
- Language: English
- Release: 2010-05-28
- Size: 366 Kb
- Cost: Free
Equation Plotter - EqPlot 1.3.6

Graph plotter program plots 2D graphs from complex equations. The application comprises algebraic, trigonometric, hyperbolic and transcendental functions. EqPlot can be used to verify the results of nonlinear regression analysis program. Graphically Review Equations: Equation graph plotter gives students, teachers, engineers and researchers the power to graphically review equations, by putting a large number of equations at their fingertips.
- License: Shareware
- Language: English
- Release: 2011-10-04
- Size: 3 Mb
- Cost: 15.00 $
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. The regression analysis determines the values of the parameters that cause the function to best fit the observed data that you provide. This process is also called curve fitting.
- License: Shareware
- Language: English
- Release: 2011-10-04
- Size: 3 Mb
- Cost: 15.00 $
UltimaCalc 3.0.645

Always at hand, UltimaCalc is compact and can stay always on top, transparent when not active. Simplify algebra expressions, integrate, differentiate, factorise polynomials. Evaluate algebraic expressions, define your own functions and constants. 200,000,000 prime numbers. Least Squares (5 methods); Standard Deviation; Plot functions; Solve Triangles; Simultaneous Linear/Nonlinear Equations; Polynomial Roots; table of constants; much more.
- License: Shareware
- Language: English
- Release: 2007-10-22
- Size: 3 Mb
- Cost: 49.95 $
UltimaCalc Professional 3.1.805

A set of mathematical tools, for scientists, engineers and students. Perform symbolic algebra: simplify expressions, differentiate them, integrate them and see how the result was obtained. Factorise polynomials, multiply and divide them, find their GCDs. Solve linear and non-linear equations, minimise an expression. Least squares fit (5 methods). Evaluate math expressions with variables. Complex numbers. Log results. 38 digit precision.
- License: Shareware
- Language: English
- Release: 2008-08-29
- Size: 3 Mb
- Cost: 44.85 $