This site links to the diagnostic and care manuals published by Marck & Co. Available free online are the following:
- Merck Manual Professional Version - thousands of articles on medical topics, with accompanying photos and videos, designed for medical caregivers' use in diagnosis, treatment and patient education.
- Merck Manual Consumer Version - Thousands of easy-to-understand articles aimed at the general public, with numerous illustrations and photos, 3D models, self assessment tools and more.
- Merck Veterinary Manual - Thousands of topics covering dozens of species, aimed at veterinary professionals, but also useful for the general public.