• Down Syndrome Down syndrome site. It aims to provide information and services for families, carers, professionals and researchers worldwide.

• Down Syndrome Information Network Includes a online library of books and articles.

• Down Syndrome: For New Parents Dedicated to providing parents with information about Down syndrome.

• Down's Syndrome Medical Interest Group (UK) Information for healthcare professionals, including UK-specific growth charts, guidelines, and medical information library.

• Growth Charts for Children with Down Syndrome Charts included are for height, weight, and head circumferences. Printable.

• Health Issues in Down Syndrome A collection of medical essays and abstracts for parents.

• Mosaic Down Syndrome Stories, message boards, and a FAQ.

• The PREP Program A school and resource centre. Includes descriptions of what they do with toddlers, school-aged children, and teens. Also included are their fees.

• Trisomy 21 Online Community For all those touched by people with all three forms of Trisomy 21. Community includes message forums, chat room, information for parents who have just found out their child has Trisomy 21, pictures and many other information pages and links.

• Uno Mas Down Syndrome Online Supportive online group of parents & friends of kids with Down Syndrome. Message Boards and Personal Stories. Hundreds of photos.