Boston Web firm offering information architecture, interaction design, usability consulting, and copywriting.

The portfolio and resume of Kyle Pero, a usability analyst, interaction designer, and information architect consultant based in Pennsylvania, USA.

Offers a range of services with a focus on user interfaces for web and non-web applications. Services available throughout the Asia Pacific. Located in Australia.

Design of custom usability testing environments, including stationary labs and portable labs. Located Georgia, USA.

Provider of usability testing and research for websites, consumer electronics, software and hardware products. Located in Texas, USA.

Independent usability and user-centred design consultancy, based in Stockholm, Sweden.

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

A usability consulting and contracting firm specializing in designing the user experience with user-centered methodologies.

Internet effectiveness consultancy offers a range of services including web site evaluations and search engine optimization. Located in Ontario, Canada.

A consulting firm in Massachusetts.