The ALS Association site offers a clear lay-language description of the disease, referral information for local chapters and support groups, and a description of publications that may be ordered from the Association.
The National Institute of Neurological Disorders and Stroke's Amyotrophic Lateral Sclerosis page provides scientific, but accessible, material on the ALS prognosis and treatment options, along with links to current research studies and other organizations.
The Muscular Dystrophy Association focuses its mission on more than 40 neuromuscular diseases, including ALS. Its site includes an online version of The ALS Newsletter, medical information about ALS and other neuromuscular diseases, and clinical trial links.