Zotero is a free, easy-to-use tool for managing references and citations. It allows users to collect, organize, and cite research sources. It senses bibliographic information from websites and stores references in the user's library. References can be organized into collections and tags. Zotero integrates with word processors to automatically generate citations and bibliographies in different styles. References and entire libraries can be synced and backed up. Zotero's features provide researchers with an efficient way to manage references.