LINK TO SITE
Zotero is a free, online research tool (used in many universities) that helps users collect and organize sources. It is downloaded as a browser extension (Safari, Firefox, Chrome) or a standalone program and is available for Mac, PC, and Linux machines.
The publisher states that "Zotero collects all your research in a single, searchable interface. You can add PDFs, images, audio and 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're looking for with just a few keystrokes."