Zotero is celebrating its birthday. Zotero is an open-source firefox add-on that acts as a citation manager. When you browse bibliographic databases, wikipedia, and online journals, Zotero can automatically determine if the page contains a citation, and extract and save it for you. If your library has a citation linker (aka link resolver, reference linker, sfx server, etc.) then Zotero can help you find the full-text version of the articles you have saved.
If you are a research or student and you already use Firefox, you probably want Zotero. Zotero’s integration with my University’s citation linker revolutionized how I search for articles and keep track of articles. In my opinion is offers dramatic improvements over refworks, though it does not replace all the features of refworks.