The American Speech-Language-Hearing Association's website provides a wealth of information for parents and educators on a variety of communication-related topics.

ASHA.org

Information for children with Childhood Apraxia of Speech regarding diagnosis, research, treatment, and support for families.  

http://www.apraxia-kids.org/

Information about social thinking programs to enhance social interactions and communication. 

https://www.socialthinking.com/social-thinking-methodology

Support and information for families of children with autism. 

http://www.autismspeaks.org/what-autism/facts-about-autism

Resources, information, and support for fluency disorders.  

http://www.stutteringhelp.org/

Parent resources, materials, and programming for building communication skills in children.  

http://www.hanen.org/Home.aspx