Zotero is a free research and citation management tool that helps you collect and organize citations and sources. Zotero works online and with word processors to recognize and capture information and generate citations. All of your citations and resources are collected and displayed in one interface, where you can upload and access content in a variety of formats including PDFs, images, snapshots of web pages, audio and video files, and more. Zotero also enables the creation of shared library folders, which are extremely helpful for any kind of collaborative research.
Tutorials and guides for the latest version of Zotero: