OSBib is an Open Source bibliographic formatting engine written in PHP that uses XML style files to store formatting data for in-text or endnote-style (including footnote) citations and bibliographic lists. Released through Bibliophile, OSBib is designed to work with bibliographic data stored in any format via mapping arrays as defined in the class STYLEMAP. For those bibliographic systems whose data are stored in or that can be accessed as bibtex-type arrays, STYLEMAPBIBTEX is a set of pre-defined mapping arrays designed to get you up and running within a matter of minutes. Data stored in other formats require that STYLEMAP be edited.