RefDB is a reference database and bibliography tool for SGML, XML, and LaTeX documents. Command-line tools allow interactive or scriptable access to the data which are stored in a SQL database. RefDB can also be accessed through a Web interface, a SRU interface, or via editor extensions (Emacs/vim). Libraries for Perl and PHP are available for programmers. RefDB provides sophisticated character encoding handling, using Unicode by default.
BibORB is a Web-based tool for managing bibliographies. It allows the sharing of bibliographies and provides an interface for editing references. It also eases the management of electronic versions (.ps, .pdf, etc.) of papers associated with your references. Classification is possible using groups, and search functions are included. BibTeX bibliographies can be imported, and selected references can be exported to BibTeX, Ris, and DocBook format.