Endotext (Endotext.org) is an online resource on endocrine disease written by physicians and directed toward physicians around the world caring for patients with endocrine disorders. It is organized by Kenneth R. Feingold, MD, twenty-one section editors, and over 500 authors. It is comprehensive, authoritative, constantly updated, and unbiased. Endotext, covering the broad area of Clinical Endocrinology, emphasizes clinical endocrine practice and includes the most current information on the manifestations of endocrine disease, diagnosis, and treatment.