1)   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.

 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)   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.

 4)   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.

 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.