Providing usability services such as heuristic evaluation and usability testing. Located in Finland.

Evaluation of usability, information architecture, and the accessibility of sites. Located in Dubai, United Arab Emirates.

Automated feedback system for collecting Web usability and performance data. Located in Washington, USA.

An outsourcing company specialising in testing of on-line applications and web sites.

Website usability and accessibility consultants.

A user-centered design firm specializing in remote usability testing and ethnogaphic research. Located in California, USA.

User research, heuristic reviews, low-fidelity, high-fidelity, metric, and summative testing for critical path, fast-time-to-market projects that target high returns. Located in Florida, USA.

Offers usability evaluations for online applications. Specialized in accessibility for speech browsers. Includes articles. Located in the UK.

Usability testing services from small, San Luis Obispo, CA based consultancy.

Offers usability testing, interviews, ethnographic studies, focus groups and heuristic analysis. Located in New York, United States.

Offers usability evaluations of Web sites and applications. Author of "Interface Design for E-commerce Applications". Located in Vermont, USA.

An independent website assessment service that evaluates and reports on the overall effectiveness of content, design and use.

Provides usability assessment (such as expert reviews and user testing) of web sites, software, documentation, and computer-related hardware. Located in California, USA.

Provides companies and government organisations with usability testing & evaluation. Located in Woden, Australia.

User experience testing, consulting & design. Offices in Singapore, Malaysia, the United Arab Emirates & Vancouver, BC.

Resources for web usability and e-Government. Based in Arlington, VA

Offers Web site evaluation reports based on navigation, design, content and strategy. Located in Wellingborough, United Kingdom.

An online market research service to aid in concept testing and website usability testing. Tracks customer opinion and behavior to measure, analyze, and improve customer experience and expectations. Located in Connecticut, USA.

Unique, usability testing facility built into a home setting. Can be used for testing consumer appliances, hardware and software products.

Provides feedback on Web sites using a panel of Internet users. Sites can be analyzed for usability, design and performance. Includes a FAQ and a tutorial.

Website testing and diagnostic services to identify usability problems and improve the user experience. Located in Colorado, USA.

Providing site audits and reviews, search engine placement reports, and specialised usability services for web sites. Located in the UK.

Provides website evaulations and usability testing.

Provides in-person and remote usability testing, field studies, customer interviews, task analysis, and participatory design for software, web, and consumer product development. Berkeley, CA, USA.

Offers Web site usability reviews & testing, with a focus on e-commerce. Based in Seattle, Washington, United States.

Discrete website usability review ordered online. Based in the United Kingdom.

Web site usability testing, newsletter conversion checkups, shopping cart functionality & self-study courses. Located in PA.

Offers Website optimization services. Located in Ontario, Canada.

Offers usability and accessibility consultancy services for web sites, software and products. Based in Edinburgh, Scotland.

Offers to test web sites on people and applies insights from cognitive science for usability problems. Located in the United Kingdom.

Assesses the visitor friendliness of your website, using real internet customers as paid reviewers. Located in the UK.

Providing web critiques highlighting the good and bad points about a web site as well as techniques to fix them. Located in England.

Provides website testing for businesses and web developers.

Providing web site usability evaluation services. Located in Pennsylvania, USA.

Provides services that objectively evaluate and compare web sites. The behavior-based SiteProfile provides automated services that measures and compares website usability. Located in Oregon, USA.

Offers services to evaluate web site usability and gives recommendations how to make sites easier to use.