Xgfe is not intended to support every option of Gnuplot, but it is very useful for cranking out a quick plot and generally making your life with Gnuplot much easier. Xgfe does offer the ability to type commands directly to Gnuplot so its full capabilites are available through the GUI. See the features page for a full listing.
Xgfe was developed and tested with Gnuplot version 3.5. Xgfe communicates with Gnuplot via a named pipe so it should work with other versions also. Xgfe will not require recompiling for newer versions of Gnuplot as long as the commands remain consistent. All communication with Gnuplot is contained within the gnuInterface class which contains no GUI code, so if you want to develop your own GUI feel free to pilfer my class file and have fun. Xgfe is GPL'd software for your enjoyment.
If you want to grab a copy, here is the source code for latest version: xgfe-1.0
Xgfe has currently been tested with:
Xgfe is written by David Ishee. My email is dmi1@ra.msstate.edu.