Zotero [zoh-TAIR-oh] is a free, open sourced citation manager that helps you collect, manage, and cite sources. Features include:
Zotero can collect and organize your citations for upcoming articles, conference presentations, and other research projects you may be working on. It has a built in feature that, with a click of a button, will grab citation information from a source you are viewing. The information it grabs includes author, title, publication title, publication date, and page range. It can also grab extra information, like the date you viewed the source, when needed. All your citations are collected and organized in your own personal Zotero library - no more searching your computer, email, or documents for a list of resources you collected.