A new release of the freeware molecular formula drawing program 'chemtool'
is available from http://ruby.chemie.uni-freiburg.de/~martin/chemtool.html
in both source and intel rpm format (.deb packages are on debian.org).
Changes from the last stable release include PDB and MDL import, MDL and
SVG export, improved file dialogs with preview, and essentially unlimited
undo/redo.
The current alpha release of the 1.6 development cycle adds more import
formats by interfacing to Babel or OpenBabel, and expands the list of
elements known to the integrated molecular mass calculator.

Martin
--
Dr. Martin Kroeker