Consultants to help you improve the user friendliness of your web site, located in Florida, USA.

A User Experience design and consulting firm that unites theory and practice to advance the art of user experience design while helping clients make better business decisions. Located in California, USA.

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.

Specializes in web usability and information architecture. Includes online articles. Located in Belgium. [English, Dutch, French]

Helps corporations achieve specific business results by providing research, and a user-centred approach to the design and use of digital technologies. Located in the United Kingdom.

Provides guidance in collaborative, user-centered design, ethnographic research, and multidisciplinary collaboration. Located in California, USA.

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

Providing innovative research and applied design for government, industry, medical, and transportation fields. Locations in Washington DC and Massachusetts, USA.

A management consulting and software development company that has expertise with all forms of Electronic Performance Support Systems (EPSS). Located in Ohio, USA.

Consulting and research in human factors, ergonomics, usability and safety in product and system design from California, USA.