This document provides an overview of Zotero, an open source reference management tool. It describes Zotero as free software that works with browsers like Firefox, Chrome, and Safari to automatically sense references from web pages and organize them into collections. Key features include collecting references, organizing them, citing them in papers, synchronizing libraries across devices, collaborating in groups, and integrating with word processors for automatic bibliography generation. The document also outlines Zotero's import/export options, APIs, limitations like lack of IE support, and paid storage plans for larger libraries.