1)   LAB Fit Curve Fitting Software 7.2.30 Curve fitting (fit), nonlinear regression, treatment of data, basic statistics, error propagation, 2D and 3D graphs, confidence band, uncertainty, error bars, extrapolation, chi-square, correlation coefficient tests, covariance matrix, math tools. 2)   SimplexNumerica 8.0.1 2D/3D technical graphics plotting and data analysis software for your plotting needs. Curve fitting, FFT and a presentation software! Download a demo of our analysis and plotting software! 3)   CurvFit 5.11.5 a curve fitting program: Lorentzian, Sine, Exponential and Power series are available models to match your data. A Lorentzian series is recommended for real data especially for multiple peaked data.This is a Calculus programming demo application. 4)   TriLookup 2.2 Excel add-in with eleven powerful worksheet functions for 1, 2 and 3 variable lookup and interpolation (closest-value, linear, piecewise parabolic or hyperbolic, cubic spline) and polynomial curve fitting. Includes online help and example workbooks. 5)   TriLookup Mac 2.2 Excel add-in with eleven powerful worksheet functions for 1, 2 and 3 variable lookup and interpolation (closest-value, linear, piecewise parabolic or hyperbolic, cubic spline) and polynomial curve fitting. Includes online help and example workbooks. 6)   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.