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.

Free chemoinformatics toolkit geared toward rapid development of chemistry related algorithms. Written in Python with a small portion written in C++.

Open-source C++ library for molecule file conversion and pattern matching.

Free Perl modules for molecular chemistry. Tutorial, reference manual, downloads and mailing list.

Software and programming components for Delphi and C++Builder covering mathematics, statistics, scientific graphing, and chemistry.