Assistive Technology Assis-TECH: Assistive technology products. Assistive Devices, Inc: Specializing in functional solutions for independent living. AZtech: The name AZtech, Inc. stands for A to Z assistive TECHnology. AZtech is operated by the Rehabilitation Engineering Research Center on Technology Evaluation and Transfer (RERC-TET). The RERC-TET is supported by a grant from the National Institute on Disability and Rehabilitation Research, U.S. Department of Education. Deafworks: Products for the Deaf & Hard of Hearing.