Provider of usability testing and research for websites, consumer electronics, software and hardware products. Located in Texas, USA. http://www.usabilitysciences.com/
Specialists in designing usable, useful and aesthetic interfaces for interactive products, ranging from software applications to handheld devices and medical equipment. Located in California, USA. http://www.swimstudio.com
Frontend provides user-centred interface solutions for online developments and software applications. Includes the Usability Infocentre and User News newsletter. Located in Ireland. http://www.frontend.com
Customer research, information architecture and design, and usability evaluation of technology products and websites. Offices in Michigan, California, and New York, USA. http://www.teced.com/
Offering usability and design consultancy to the e-commerce and client server markets in Europe. Located in London, United Kingdom. http://www.usability.uk.com/
Usability Consulting firm based in Leighton Buzzard, UK. Focuses include making web sites and particularly web forms easier to use. http://www.effortmark.co.uk
Usability and prototyping consultant focused on helping customers recognize, prioritize, and solve usability problems. Located in New Hampshire, USA. http://www.snyderconsulting.net/