"If you spend most of your time doing research on the Web, you
need Zotero, a Firefox extension that helps you manage research
sources. With Zotero installed, Firefox is not confined to the Web,
and you can use it as a standalone application for all sorts of
online and offline research.
"Zotero requires Firefox version 2.0, so you must obtain and
install the latest version of the browser to be able to use the
extension. To install Zotero, visit its Web site from Firefox,
click on the Download button, and you are ready to go..."