AASPIRE: http://autismandhealth.org/?p=home&theme=ltlc&size=small 

Contains healthcare toolkit for patients and info for healthcare providers on understanding ASD

As I Am : https://asiam.ie

Provides a booklet on making the community ASD friendly

Interactive Autism Network: www.Iancommunity.org

National Autism Association : www.nationalautismassociation.org 

Contains many booklets and pamphlets on ASD/SPD

National Autism Society UK: www.autism.org.uk

Scottish Autism: www.scottishautism.com

Advancing Futures for Adults with Autism: www.afaa.org

Autism Self-Advocacy Network: www.autisticadvocacy.org

High Quality PE for Pupils with Autism: www.autismargyll.org.uk 

Provides numerous resources

Autism Research Institute: www.autism.com

Visual Supports and Beyond: http://www.visualsupportsandbeyond.co.uk 

Contains numerous downloadable resources and visual aides, SPD screening tools, and info on ASD and food related issues

OT innovations: https://www.ot-innovations.com/ 

Contains numerous SPD strategies, assessments and screening tools, including the Sensory Diet Exploration Checklist

Advanced brain technologies: http://a.advancedbrain.com/listener_resources.jsp 

Contains informal assessments, checklists, and intake forms for The Listening Program; however the forms can be useful outside of the TLP program as well

Sensory Integration Focus: www.sifocus.com

Sensory Processing Disorder University: www.spduniversity.org

A sensory life: http://asensorylife.com/index.html 

Contains a modified sensory checklist on this site.

SPD resource center: https://www.sensory-processing-disorder.com/ 

Contains checklists SPD screening checklists

Dr. Barry Prizant: www.barryprizant.com

Temple Grandin PhD: www.templegrandin.com