Zotero [zoh-TAIR-oh] is a free, easy-to-use tool to help you collect,
organize, cite, and share your research sources.

Zotero collects all your research in a single, searchable interface.
You can add PDFs, images, audio / video files, snapshots of web pages,
and really anything else. Zotero automatically indexes the full-text
content of your library, enabling you to find exactly what you are
looking for with just a few keystrokes.

Zotero is the only research tool that automatically senses content in
your web browser, allowing you to add it to your personal library with
a single click. Whether you're searching for a preprint on arXiv.org,
a journal article from JSTOR, a news story from the New York Times, or
a book from your university library catalog, Zotero has you covered
with support for thousands of sites.