www.Medicinenet.com A library of medical articles, a medical dictionary of terms, a section on medications, and a very good section of relatively brief descriptions of numerous/various diseases and medical conditions
www.Medscape.com A library of in depth medical articles, a searchable medical dictionary, and a physicians' directory. The site requires a brief registration and password, though there is no charge for access.
CompCalc is a program designed by Illinois lawyer James M. Voelker, performs many of the tedious math calculations required for common workers' comp claims