A web usability and solutions consultancy, offering user-centered ergonomic design and web development. Located in the UK.

Design, usability and consultancy. Located in the United Kingdom.

Offers services in interaction design and software engineering. Located in California, USA.

User Centered approach to interface analysis and design.

Internet consultancy committed to helping Global 2000 clients leverage customer experience as a competitive advantage and driver of profits. Located in New York City.

Interface design and usability consulting firm which applies user centered design strategies to help businesses improve the user experience of their Web sites and consumer products. Located in California, USA.

Specializing in user interface design, ethnography, usability evaluations, and user support systems. Located in Georgia, USA.

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

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

Offering usability and design consultancy to the e-commerce and client server markets in Europe. Located in London, United Kingdom.