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.

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.

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.