EndNote. RefWorks. CiteULike. Zotero. Biblioscape. WikIndx. Who can keep it all straight? Wikipedia, that’s who! Their article on comparison of citation management tools really lays out the current landscape on these tools very well including commercial, free, and open-source, desktop-based, server-based and web-based tools. It offers charts on how they stack up on integration with word processors, supported platforms, import and export capabilities, citation styles and more. Very, very useful!