Adage: Providing usability services such as heuristic evaluation and usability testing, based in Finland.
Afflatus Inc: Evaluation of usability, information architecture, and the accessibility of sites, based in Dubai, United Arab Emirates.
Alertus: Automated feedback system for collecting web usability and performance data, based in Washington, USA.
Bolt and Peters User Experience: A user-centered design firm specializing in remote usability testing and ethnogaphic research, based in California, USA.
Breakthrough Usability, Inc.: User performance testing services, based in Florida, USA.
Don't Make Them Think: Provides a range of consulting services to ensure all the elements of your web site are easier, simpler and more effective to use.
Easyenough: Usability testing services from, consultancy based in San Luis Obispo, California, USA.
Experience Dynamics: Professional usability and user centered design consultancy based in Oregon, USA.
First Insights: Conducts usability testing and qualitative market research, based in New York, USA.
framfab: Full service digital agency network servicing clients with marketing and technology solutions, based in the United Kingdom
Gokin, Paul: Offers usability evaluations of web sites and applications, based in Vermont, USA.
Hawdale Associates Limited: Consulting firm focused on helping clients understand how customers think and buy online and how to design online experiences that work, based in Manchester, United Kingdom.
HT Consulting: Provides usability assessment of web sites, software and computer-related hardware, based in California, USA.
infoDesign: Information designers, technical writers and web usability analysts, based in Dunedin, New Zealand.
Interface IQ: Independant specialist usability, accessibility and information architecture consultancy based in Northern Ireland.
IQ Intelligent Internet: Provides companies and government organisations with usability testing and evaluation services, based in Woden, Australia.
Metro Research Ltd: International market research and usability consultancy based in the United Kingdom.
MicroUsability: User experience testing, consulting and design. Offices in Singapore, Malaysia, Vancouver and the United Arab Emirates.
Millennial Living: Resources for web usability and e-Government, based in Arlington, Virginia, USA.
North Square: Offers Web site evaluation reports based on navigation, design, content and strategy, based in Wellingborough, United Kingdom.
Peak Usability: User experience and usability consultancy based in Brisbane, Queensland, Australia.
PinPoint Performance Solutions: Usability testing and needs analysis to support user-centered design and performance improvement based in Idaho, USA.
RelevantView: An online market research service to aid in concept testing and website usability testing, based in Connecticut, USA.
ResearchHouse: Unique, usability testing facility built into a home setting, based in San Jose, California, USA.
Softerware Consulting: Softerware provides usability testing, site audits and information architecture services, based in Indiana, USA.
TandemSeven: Design and usability services covering the full application development lifecycle, based in the USA.
The Site Therapist: Website prognosis reports that include information pertaining to the health of websites, based in Cary, North Carolina, USA.
theSiteDoctor: Provides website evaulations and usability testing, based in North Carolina, USA.
UsabilityEffect: Web site usability testing and newsletter conversion checkups, based in Pennsylvania, USA.
UsabilityReviews: Offers website optimization services, based in Ontario, Canada.
User Centric, Inc.: User experience consulting firm that specializes in usability testing, user experience research and design, based in Illinois, USA.
UserMetrics: Offers to test web sites on people and applies insights from cognitive science for usability problems, based in the United Kingdom.
Web Critiques: Providing web critiques highlighting the good and bad points about a web site as well as techniques to fix them, based in the United Kingdom.
Web Scrutineer: Provides website testing for businesses and web developers, based in Auckland, New Zealand.
Web Usability, the Right Way: Consultant service provides a service to make websites stand out from the competition by making them more user friendly.
WebCritica: Offers services to evaluate web site usability and gives recommendations how to make sites easier to use, based in USA.