Gnuplot is a portable command-line driven interactive data and function plotting utility. It was originally intended as to allow scientists and students to visualize mathematical functions and data. It does this job pretty well, but has grown to support many non-interactive...
GNU Octaveand
Free easy-to-use online curve fitting tool with linear regression calculator, polynomial, exponential, logistic and power fit. The online calculator finds best-fitting curve for user-defined data and chosen function.
A simple plotter and numerical solver, which can plot CSV style plain text files with numerical data separated by whitespace, as well can numerically solve equations and ODEs to generate data and plot them for studying dynamical systems.
GNU Octaveand
A mathematical modeling software to visualize and animate implicit and parametric surfaces in 3D and 4D.
