The following links include tables that compare the features of these citation tools.
EndNote is software that allows you to keep track of your citations, organize them into folders, and create references and bibliographies in your papers. Unlike these web-based applications, EndNote is not free, and requires download and installation. You can download a 30-day trial version from the Endnote website, or buy it from the University of Illinois WebStore.
For more information about this resource, check out the Endnote LibGuide created by University of Illinois Library.
A free citation management software program. Check out the LibGuide about Mendeley and find more detailed information on how to get the most out of this software.
Mendeley Desktop organizes your research paper collection and citations. It automatically extracts references from documents, generates bibliographies, and is freely available on Windows, Mac OS X and Linux.
Mendeley Web lets you access your research paper library from anywhere, share documents in closed groups, and collaborate on research projects online. It connects you to like-minded academics and puts the latest research trend statistics at your fingertips.
A free citation management software plug in for Mozilla Firefox. The following link is for the LibGuide about Zotero.