Internet Sleuth Use to find specialized searchable databases relating to a particular subject. Librarians' Index to the Internet Sites from general interest to academic. Includes annotations with evaluation. Excellent resource for almost any subject. Resource Discovery Network Access to high quality, scholarly Internet resources.
Rich entry points to a full range of Internet, bibliographic, documentary and data resources.
WWW Virtual Library Selected, academic and professional sites, but quality varies. Sites include a few short descriptions. Some annotations are available. Largest and most comprehensive Web directory. No formal selection or quality control, user-submitted sites.