A hopeful trend: Crystallography Suites that link directly into the crystal structure databases
 
 
Platon for UNIX (if CSD/Quest is also installed):
- http://www.cryst.chem.uu.nl/platon/
 - CSD Cell searching at the click of a button
 - Connectivity search: using the CORINA to generate a PDB file,
 - http://www2.ccc.uni-erlangen.de/software/corina/free_struct.html
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 - Then use Platon/System S acting as a friendly interface for Quest.