JGP is a GUI for gnuplot (http://www.gnuplot.info/).
It is made for all those who just love gnuplot but who found
that organizing a large number of datasets and plots from the command line is inconvenient.
JGP uses gnuplot as plotting engine.
nice try However, the most important thing for gui to gnuplot is export of gnuplot script to file, and this is missing. Sure, there is some console preview but the long unformatted string for plot command including let's say 10-20 datasets is not what is expected.