Java Data Processing Project aims to manipulate text file containing scientific data such as time/intensity scan or spectrum. Jdpp provide large flexibility to read all possible time duration and date format. It is originally design to treat MS data.
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.