descartes is an easy-to-learn interactive 2D plot
program. It can plot (and superpose) images,
xy-data, and arbitrary mathematical functions.
Function parameters can be tuned with sliders, and
functions can be automatically fitted to data.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.