Chemtool is a GTK+-based 2D chemical structure editor for X11. Drawings can be exported in XFig format for further annotation, or as Postscript files (using xfig's companion program transfig). A set of sample molecular structure drawings is included in the archive.
JFDraw is a Java vector graphics drawing
application and library package. It is focused on
vector graph drawing field. It is useful for
mechanical, electronic, architectural graph
drawing applications, or even business process or