BioPostgres is a collection of modules that extend PostgreSQL for Computational Biology. Each extension implements new datatypes with query operators and other tools, providing powerful large-scale query and analysis.
The BioPostgresproject is a PostgreSQL Community project that is a part of the pgFoundry.
The pgFoundry page for the project is at http://pgfoundry.org/projects/biopostgres, where you can find downloads, documentation, bug reports, mailing lists, and a whole lot more.