Presents a comparative review of the Cumulative Index to Nursing and Allied Health Literature (CINAHL) database as it is made available on the Web by three vendors: EBSCO, OVID, and SilverPlatter. CINAHL is the primary indexing and abstracting service covering the literature of Nursing and Allied Health, with its primary audience being healthcare professionals and students in clinical, library, and educational settings, as well as consumers. The database covers virtually all English-language publications in these disciplines (more than 900 journals) from 1982 to the present. Compares CINAHL on each of the vendors' platforms on the basis of searchability, contract options, and special features. Notes that none of the vendors provided adequate pricing information for effective comparison, and that the content is the same from all three providers.