Software for assisting in the plotting of graphs (in the statistical data / function sense).
As well as sites relating to graph-plotting software, those relating to software which provides other assistance in relation to graphing (such as digitizing graphs, or producing graph paper) may be suggested for listing here.

If there is an appropriate sub-category of Science/Math/Software/Graphing for your site, please submit your site there instead.

For software relating to the ''vertices and arcs'' or network type of graph, please see under Combinatorics Graph Drawing Software.

Gnuplot is a command-line driven, interactive, function and data-plotting program for producing 2D and 3D plots. Although Gnuplot does not have as many features as some of the commercial mathematical software available. It is not as complex to use as packages such as Mathematica or Matlab. Gnuplot can be run under DOS, Windows, Macintosh OS, BeOS, OS2, VMS, Linux, and many other operating systems.