What is Grey Literature?
Grey Literature ...deals with the production, distribution, and access to multiple document types produced on all levels of government, academics, business, and organization in electronic and print formats not controlled by commercial publishing, i.e. where publishing is not the primary activity of the producing body. (source: http://www.greynet.org/home/aboutgreynet.html)
libguides.com - Springshare developed LibGuides as an easy-to-use format for resource guides that is now used by a community of librarians, of both public and private libraries, including school, college, university, and special libraries.
ODP - Open Directory is the most widely distributed data base of Web content classified by humans. Its editorial standards body of net-citizens provide the collective brain behind resource discovery on the Web. The Open Directory powers the core directory services for the Web's largest and most popular search engines and portals, including Netscape Search, AOL Search, Google, Lycos, HotBot, DirectHit, and hundreds of others.
WWW Virtual Library - WWW Virtual Library is a frequently updated Internet directory of over 2000 annotated links to high-quality English-language sources of current information and analysis in a wide range of international affairs, international relations, international studies, global studies, and global education topics.