Jgraph is a non-interactive filter for plotting two-dimensional scatter, line, and bar graphs in PostScript. It has also been used as a general-purpose drawing utility. Jgraph’s strengths lie in its portability, flexibility, and integration into the UNIX environment. Jgraph is free software available on netlib or by anonymous ftp.
['James S. Plank']
Jgraph - A Filter for Plotting Graphs in PostScript