The moldb package is a fully functional set of PHP scripts which permits the creation of a web-based, searchable molecular structure database entirely with free software. The included Perl scripts are used for import of structures and data from an SD file in MDL SDF format. The package was written by Prof. Norbert Haider, University of Vienna (norbert.haider@univie.ac.at) For a brief description of the underlying technology and how to install the package, please read the file INSTALL and visit http://merian.pch.univie.ac.at/~nhaider/cheminf/moldb5.html