Gnuplot

Description

Gnuplot is a portable command-line driven graphing utility for Linux, OS/2, MS Windows, OSX, VMS, and many other platforms.

User instructions

Gnuplot is installed on all workstations from the Debian repositories.

Source

http://www.gnuplot.info/

License

Free software (own license). See here for details.

Admin notes

The version in the Debian repositories is sufficiently recent currently.