Software Development Lohninger This site offers software and programming components for Delphi and C++Builder covering mathematics, statistics, scientific graphing, and chemistry. http://www.lohninger.com/

Daylight Chemical Information Systems Offers an integrated set of programs and libraries for chemical information processing. Based on the SMILES linear notation. http://www.daylight.com/

The Chemistry Development Kit Java based computational chemistry package which supports chemical structure drawing and the graphical layout of 2D chemical structures. http://cdk.sourceforge.net/

Open Babel Open-source C++ library for molecule file conversion and pattern matching. http://openbabel.sourceforge.net/

Molecular Modelling Toolkit (MMTK) A library for molecular modelling applications. http://starship.python.net/crew/hinsen/MMTK/

CACTVS System A distributed client/server system for the computation, management, analysis and visualization of chemical information of any type. Tool collection for several Unix flavors; some of the tools are distributed freely in precompiled form. http://www2.chemie.uni-erlangen.de/software/cactvs/

PerlMol Free Perl modules for molecular chemistry. Tutorial, reference manual, downloads and mailing list. http://www.perlmol.org/

JOELib Java computational chemistry library which supports file conversion, SMARTS substructure search, QSAR descriptor calculation and process/filter methods for molecular data sets. http://www-ra.informatik.uni-tuebingen.de/software/joelib/index.html

3D structure generator CORINA 3D coordinate generator for organic molecules; interactive Java applet provides interactive conversion http://www2.ccc.uni-erlangen.de/software/corina/