Zotero [zoh-TAIR-oh] is a free, easy-to-use Firefox extension to help you collect, manage, and cite your research sources.
The following from "Firefox Add-ons"...
- Automatic capture of citation information from web pages
- Storage of PDFs, files, images, links, and whole web pages
- Flexible notetaking with autosave
- Fast, as-you-type search through your materials
- Playlist-like library organization, including saved searches (smart collections) and tags
- Platform for new forms of digital research that can be extended with other web tools and services
- Formatted citation export (style list to grow rapidly)
- Integration with Microsoft Word and OpenOffice.org