CurveExpert (16-bit) is a comprehensive curve fitting system. XY data can be modelled using a toolbox of linear regression models, nonlinear regression models, interpolation, or splines. Over 30 models are built-in, and you can define custom regression models. The full-featured graphing capabilities allow a thorough examination of the curve fit. The process of finding the best fit can be automated by letting CurveExpert compare your data to each model to choose the best curve. CurveExpert reads simple ASCII data files.