- National Association of Gifted Children
- Connecticut Association for the Gifted
- Maine Educators of the Gifted and Talented
- Massachusetts Association for Gifted Education
- Supporting Emotional Needs of Gifted
- Davidson Institute for Talent Development (Young Scholars Program)
- Mensa International
- The National Research Center on Gifted and Talented
- Johns Hopkins Center for Talented Youth
- Robinson Center for Young Scholars
- Belin–Blank Center for Gifted Education and Talent Development
- Gifted Development Center
- Summit Center, Walnut Creek, CA (Gifted, 2e)
- Summer Institute for the Gifted
- With Understanding Comes Calm
- Bridges 2eCenter for Research and Professional Development
- Gifted and Thriving/2e Resources
- Twice Exceptional Children’s Advocacy (TECA)
- 2e: Twice Exceptional News
- Gifted Homeschoolers Forum
ADHD and ASD Websites and Links
- Children and Adults with Attention Deficit Disorder (CHADD)
- Attention Deficit Disorder Association
- The Brown Center (CA)
- Hallowell Centers
- ADDitude Magazine
- Asperger/Autism Network
- Autism Society of America
- Asperger and Autism Forum Community Wrong Planet
- National Autism Association
- Tony Attwood’s Website
- U.S. Autism Association