Use BibDesk to edit and manage your bibliography. It will keep track of both the bibliographic information and the associated files or web links for you. BibDesk’s services will simplify using your bibliography in other applications and are particularly well suited for LATEX users.
RefWorks -- an online research management, writing and collaboration tool -- is designed to help researchers easily gather, manage, store and share all types of information, as well as generate citations and bibliographies.
not–for–profit organization dedicated to helping the scholarly community discover, use, and build upon a wide range of intellectual content in a trusted digital archive.