Gnuplot

Gnuplot is a portable command-line driven graphing utility.It can be used interactively to plot functions and data points in both two- and three-dimensional plots in many different styles and many different output formats. Gnuplot can also be used as a scripting language to automate the generation of plots.  It is designed primarily for the visual display of scientific data.It supports many different types of 2D and 3D plots, and many different types of output:interactive screen display: cross-platform (Qt, wxWidgets, x11) or system-specific direct output to file: postscript (including eps), pdf, png, gif, jpeg, LaTeX, metafont, emf, svg, … mouseable web display formats: HTML5, svg