Children and Adults with Attention-Deficit/Hyperactivity Disorder (CHADD)
CHADD's Northern California branch
Apraxia-KIDS
Autism Speaks
Autism Society
National Autism Association
Doug Flutie Jr. Foundation for Autism
First Signs
Families for Early Autism Treatment
Rethink Autism
Talk About Curing Autism
Autistica (UK)
Autism National Committee
Parent to Parent USA
National Downs Syndrome Society
NOFAS
FAS Family Resource Institute
WrightsLaw
Families Affected by FASD
National Fragile X Foundation
FRAXA Research Foundation
American Association on Intellectual and Developmental Disabilities (AAIDD)
The Arc
National Center for Learning Disabilities
Learning Disabilities Association of America
LD Online
Misunderstood Minds
International Rett Syndrome Foundation
Rettland Foundation
online support networks (listing)
Spina Bifida Association