JabRef

http://jabref.sourceforge.net/
JabRef is an open source bibliography reference manager. The native file format used by JabRef is BibTeX, the standard LaTeX bibliography format. JabRef runs on the Java VM (version 1.5 or newer), and should work equally well on Windows, Linux and Mac OS X.
note from ANU Data Management : Endnote does [...]

Thomson Reuters announces new EndNote Web release

The Scientific business of Thomson Reuters (formerly Thomson Scientific) has announced a new EndNote Web release, an upgrade to the online bibliographic tool that complements and integrates seamlessly with EndNote desktop and the ISI Web of Knowledge research platform. EndNote Web has a new look, introduces administrative tools to customise online [...]