bp is a freely licensed perl package for manipulating and accessing bibliographic information. It supports bibtex, refer, endnote, procite, inspec, medline and other formats for input/output/conversion. I emailed the author as the bp homepage does not seemed to have changed in two years... will post any response as a comment.
The Open Source Digital Library System (OSDLS, a.k.a. Powerful Yet TactfullyHelpful Electronic Arranger of Sources (PYTHEAS)) is a project to develop an open source next-generation library system. Current development includes a data model based on MARC and RDF expressed in XML. Links to the design draft and listserv details are at the OSDLS homepage.
seen at freshmeat and from the site: "pybliographer is a tool for managing bibliographic databases. It currently supports BibTeX files for reading and writing, and can also read Ovid files... It can be used for searching, editing, reformatting, etc. In fact, it's a simple framework that provides easy to use python classes and functions, and therefore can be extended to any usage (generating HTML pages according to bibliographic searches, etc)."
MARC.pm is a Perl 5 module for reading, manipulating and writing MARC records. Once installed in your Perl library you will be able to use MARC.pm's functionality to read in individual records or batches of MARC records, extract data from particular fields, and convert the records into a variety of formats including HTML and XML. You can also use MARC.pm to create records from scratch--which might prove useful if you have have some delimited data that you would like to convert into a MARC record. Since it is a Perl Module, MARC.pm might prove also prove to be useful as a component of a larger application that uses MARC in some form.
new features listed at Pybliographer site include speedups, French language support, Medline, and LyX support as well, along with documentation. any end note users should try this out and let him know if it works...
as seen at freshmeat, and at SIXPACK site: "SIXPACK is a free BibTeX and Reference Manager designed to edit, convert and manage reference files, search and sort bibliographies, import and export many different bibliography types. Sixpack uses the excelent perl package bp by Dana Jacobson to covert between formats." and it reads/writes bibtex, refer, endnote, tip, procite, rfc1807, and plain text along with one-way for several others. written in perl/tk... looks real good.
Stuart writes: "M[n]M is software that
supports processing of national standard MARC MeSH subject authority records for use in medical library online public access catalogs. While designed for use with Innopac M[n]M can also be used to manage MARC MeSH in other OPACs. M[n]M is freely available under the GNU Public License. To download M[n]M or to read more, go to library.med.nyu.edu/mm".
There's also a very informative paper describing M[n]M available here.
as seen on gnome-list, what's new includes "multiple documents interface, with copy/paste and drag'n'drop; multiple selections (useful with LyX citation for example); all the supported formats (bibtex, medline, ovid, refer) can now be read and written; better date handling; bug fixes." for more see the pybliographer download page at gnome.org. if you haven't tried this yet give it a shot; i might finally get rid of endnote + msword (and there was much rejoicing). :)
seen on many lists recently is XMLMARC, a "Java client/server program [which] converts MARC to XML based on flexible maps and simplified, yet detailed DTDs for bibliographic and authorities formats." Its license is free for non-commercial use but requires consent for redistribution, and their broader experiment is described here. They seem to be aware of MARC.pm... it would be great to see a side-by-side feature comparison of the two.