Gnuplotting · Create scientific plots using Gnuplot
www.gnuplotting.org
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
As a physicist I’m using Gnuplot since the early days of my studies. I’m a big fan of terrific looking plots and that’s why I have spent a lot of time working with Gnuplot. I hope you will also enjoy plotting with it.