Autism Speaks provides families with resources and information on Autism.  There is up to date information on the current diagnosis criteria, research, family tool kits and an online checklist for parents to assess risk of autism.

Created by Danny Raede & Hayden Mears, both diagnosed with Asperger's, Asperger Experts is designed to show you how to best assist people with Asperger’s and autism, in order to achieve their highest potential in life.

This website focuses upon the cause of autism and is useful to healthcare professionals, including mental health specialists and scientists.  The Autism Research Centre at Cambridge University, UK, is one of the leading research facilities concentrating on finding the cause of autism.

UK charity for people with autism (including Asperger syndrome) and their families. The site provides information, support and encourages campaigning for a better world for those with autism.

US Center for Disease Control & Prevention
CDC's official information on ASD, supported with online films and reports.

World Health Organisation
WHO's official frequently asked questions around autism.