Zotero is an Add-on or Plug-in for the Firefox browser which serves as a bibliographic management tool. It is designed to help you gather, organize and use bibliographic citations for the creation of scholarly articles, reference lists, or web-based reading lists. Zotero also serves as a web capture tool. This application can be integrated with Microsoft Word to allow for citing articles while writing, utilizing another plug-in.
Iowa State University Library supports this software application, which is freely available.