Consultants help improve the user friendliness of web sites, located in Florida, USA.

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

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

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

Experts in user interface design for applications and other web-based products. Located in California, USA.

A user experience consultancy offering research, testing and design expertise to develop interactive applications. Located in Illinois, USA.

Provides research, workshops, and consulting for improving the user experience of web sites and interactive applications. Located in New York, USA.

A software development and professional services organization with expertise in graphical user interface (GUI) design and usability. Located in California, USA.

Seasoned interaction designer: documentation, graphics, wireframe models, best practices and information architecture. A unique combination of business understanding, technical acumen, creative talent and strategic insight. Experienced in transactional sy

Offers a range of goal-directed services that can be used to create and improve interactive solutions from California, USA.

Texas design consultancy specializing in user interface and interaction design, visual communication, and usability for products requiring human-computer interaction.

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

User Centered approach to interface analysis and design.

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

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

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

Eye tracking technology to test users' responses to websites and other promotional material. Located in California, USA.

Designs software and websites, provides market analysis and training, and works with rich media and wireless technologies. Located in Massachusetts, USA.

Experience design agency specialising in user-centred design and customer-driven innovation. Based in the UK

Frontend provides user-centred interface solutions for online developments and software applications. Includes the Usability Infocentre and User News newsletter. Located in Ireland.

Representation of the disciplines of information architecture, business analysis and usability, as well as contact information and a resume. Located in Massachusetts, USA.

Offers customized user experience and branding solutions. Notable clients include Macromedia and WebEx.

Award-winning web site development, user interface, user experience consulting and communication design. Includes short articles. Located in California, USA.

Provides website design and development solutions for internet, extranet, intranet, multimedia and new media projects.

Internet and interface development. specialise in HCI, usability, architecture, systems integration and e-business. Offer a number of white papers. Located in California, USA.