Zotero is a free citation management tool that helps you collect, organize, and share citations. Zotero is freely available for download from www.zotero.org. You can use Zotero to:
Zotero works on PCs, Macs, and Linux systems, and is compatible with MS Office, Google Docs, and Open Office. An iOS app is also available.
The University of Chicago Library provides unlimited storage on Zotero's cloud services to UChicago users, and provides support for Zotero through workshops, webinars, and consultations.
Just need to create a quick bibliography? You can use ZoteroBib to look for citations for books or articles, and create a bibliography in standard styles in just a few steps.