Australia-based consulting group specialising in eBusiness usability and accessibility.

Provides analysis and designs interactive systems and interfaces for usability across all technology platforms. Located in New York, USA.

Offers web and interface design plus user studies.

Helps companies determine product strengths and weaknesses, and gives specific, blueprint-level guidance on how they can be improved. Located in California, USA.

Usability Consulting firm based in Leighton Buzzard, UK. Focuses include making web sites and particularly web forms easier to use.

User Centered approach to interface analysis and design.

Specializes in customer-centered product and service innovation. Includes links.

Integrated delivery of user interface design, industrial design, and usability assessment and testing services. Located in Ottawa, Canada.

Web based communications company. Offers publication, presentations and consulting. Includes Computer-Mediated Communication Magazine (CMM) archives and resources.

Provides user interface design, user centered design, and usability services for software and hardware developers. Located in Canada.