The ESPOIR 3.00 Monte Carlo code can locate up to 4
independent "objets" (rigid fragments or molecules and/or
groups of independent atoms) from powder diffraction data :
http://sdpd.univ-lemans.fr/sdpd/espoir/
Additional commented examples are available at :
http://sdpd.univ-lemans.fr/sdpd/espoir/examples/
These new developments were sponsored by DuPont.
The Fortran source code remains available under the
GNU Public License.
Best,
Armel Le Bail - Universite du Maine, Laboratoire des Fluorures,
CNRS ESA 6010, Av. O. Messiaen, 72085 Le Mans Cedex 9, France
http://www.cristal.org/