All links here are in totally random order.
The BibTeXML Project
The RefDB Project
« BiblioML » Project
UNIMARC format description
BibDB
program
Bibliography
Tools (Chris Putnam)
MODS (Metadata Object
Description Schema), from the library of congress
DOI (Digital Object Identifier)
Pybliographer
Jurabib package
Bibliographic
Software for Librarians & Researchers