Abstract. Usability evaluation of Web sites is still a difficult and timeconsuming task, often performed manually. This paper presents a tool that supports remote usability evaluation of Web sites. The tool considers client-side data on user interactions and JavaScript events. In addition, it allows the definition of custom events, giving evaluators the flexibility to add specific events to be detected and considered in the evaluation. The tool supports evaluation of any Web site by exploiting a proxy-based architecture and enables the evaluator to perform a comparison between actual user behavior and an optimal sequence of actions.

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Usability evaluation of Web sites is still a difficult and timeconsuming task, often performed manually. This paper presents a tool that supports remote usability evaluation of Web sites accessed through mobile devices. The tool considers client-side data on user interactions and JavaScript events. In addition, it allows the definition of custom events, giving evaluators the flexibility to add specific events to detect and consider in the evaluation. The tool supports evaluation of any Web site by exploiting a proxy-based architecture and enables the evaluator to perform a comparison between actual user behaviour and an optimal sequence of actions.