AssistiveTech.net
Assistivetech.net is a free online database that lists over 20,000 products which can be searched for by function (related functional area or disability), activity (related activity or task) or vendor (manufacturer or distributor name).
http://assistivetech.net/

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Center on Technology and Disability (CTD)
The Center on Technology and Disability works to increase the capacity of families and providers to advocate for, acquire, and implement effective assistive and instructional technology (AT/IT) practices, devices, and services. It serves diverse audiences and offers online courses, professional development opportunities, and a resource library.
http://ctdinstitute.org/

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State Technology Act Projects
The Assistive Technology Act of 2004 (AT Act), administered by the Rehabilitation Services Administration (RSA), is intended to improve the provision of AT to individuals with disabilities through comprehensive statewide programs of technology-related assistance. Find your state’s AT program, at:
http://assistivetech.net/webresources/stateTechActProjects.php