Hi. I would appreciate any help on this matter. I am planning to move from PC to Apple for a while but first I have been looking for compatible/similar softwares that I need at my work. There is only one missing at this point and I have already checked versiontracker and similar sites for some light. If you happen to know what can do the trick, I will finally switch right away to a mac. I need any software to plot XYZ or XYY data (XYY means a series of XY data plotted in the same graph) as shown in the attached picture (there is not need of colors). I know that Gnuplot could be useful here but I wonder if there is anything better than that. Thank, S.