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

Website usability reports and email support. Located in New York, USA.

Provides usability services as well as site design and site creation services for web based companies.

Offers user research and services for the complete design and development process including usability testing. Based in London, United Kingdom.

Offers usability evaluations, user-centered front-ends, software product design, and training. Located in India.

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

User interface design and usability consulting for Windows applications and web sites, for business productivity.

Provides user experience research, user-centered interactive design and usability evaluation. Offices in Ohio and Colorado, USA.

Specializing in interface design, usability testing, site development, database architecture, and ecommerce sites. Located in Pennsylvania, USA.

Consulting firm specializing in customer-focused information design and interaction design of media, products and tools. Located in Belgium.