Chemtool is a small program for drawing chemical structures on Linux and Unix systems using the GTK toolkit under X11.
Chemtool relies on transfig by Brian Smith for postscript printing and exporting files in PicTeX and EPS formats. Its companion program, XFig, is recommended for enhancing the output of
chemtool, and for creation of 2D diagrams and schematics in general. Both are included with
...Licence : GPL 
Take our 
