Zotero is free, open source reference management software to manage bibliographic data and related research materials (such as PDFs). Notable features include web browser integration, online syncing, generation of in-text citations, footnotes and bibliographies, as well as integration with the word processors Microsoft Word, LibreOffice and OpenOffice.org Writer. It is produced by the Center for History and New Media of George Mason University (GMU). Zotero was the first to adopt the Citation Style Language, and maintains the Zotero Style Repository, the main repository of CSL styles. Users can generate citations and bibliographies through the word processor plugins, or directly in Zotero. The first release of Zotero, 1.0.0b2.r1, was made available in October 2006 as an add-on for the Firefox web browser.
Zotero Website: http://www.zotero.org/