SigmaPlot is a scientific data analysis and graphing software package designed to help researchers analyze data more quickly and accurately. It is a powerful, user-friendly application that allows users to visualize data in a variety of ways, including scatter plots, bar graphs, histograms, and 3D plots. It also includes a comprehensive set of statistical analysis tools, including linear and nonlinear regression, curve fitting, and hypothesis testing. SigmaPlot also provides an intuitive user interface with helpful wizards, customizable templates, and an extensive library of symbols and shapes. SigmaPlot is a great tool for researchers who need to quickly analyze data, create graphs, and generate publication-quality reports.
Discontinued Derive was discontinued on June 29, 2007. The latest and last version is Derive 6.1 for MS-Windows.
There is no option to write your own equations and fit a curve to that in Prism, although it is ideal for general plotting.