Bases information architecture and interface design on user data and continuous usability testing. Located in Texas, USA.

Provides usability services including web site evaluations and design. Located in the UK.

Solutions for user interface design and human factors engineering. Located in Israel.

Offers web and interface design plus user studies.

Technology for persons with special needs and access for everyone.

Provides user interface design services, including usability evaluations and education. Located in Canada.

Freelance web marketing writer/consultant specializing in copy writing and content creation.

Offering usability evaluation, accessibility advice, and web design. Located in the United Kingdom.

Software user interface design and rapid production services including prototypes for telephone, handheld, and desktop systems. The website describes services offered and tips for effective user interface development. Located in California, USA.

Ethnographic research leading to the creation of useful and desirable user experiences. Located in the United Kingdom.