Comparative analysis of online Web accessibility evaluation tools

In many countries, it is mandatory that Web information systems are accessible so that people with disabilities can use them. The developers of web information systems must ensure that their systems are accessible, and for this it can help the use of automatic evaluation tools. This paper presents the results of a comparative analysis of the performance of online accessibility evaluation tools. This analysis can be useful for developers of information systems, as it provides information that can be taken into account when deciding the tool or tools of this type that they will use in their projects. The paper also includes a proposal for classification of different types of tools that evaluate software accessibility, considering two dimensions: its usage and functionality.