Zotero is a reference manager program. It exists either as an add-on for the Firefox web browser, a separate program, or both. It allows researchers to save references from library catalogs, research databases and other websites with a single click. It runs constantly as a plugin in the web browser, which has perhaps become our most essential research tool, so it is always available. It collects saved citations into a personal “library,” making them easy to organize and search for later use. A few clicks can turn references in the Zotero library into a bibliography in well over a thousand bibliographic styles. It automatically backs up citations and files to the cloud, making the library accessible from any computer but fully functional offline too.