The website a11ysupport.io is a community-driven initiative focused on testing and sharing results related to assistive technologies, particularly screen readers. Users are encouraged to run tests on various web features and contribute their findings to enhance the project's knowledge base. The site provides detailed support data for several ARIA roles and attributes, indicating how well different screen readers handle these features. For example, the alert role (both named and unnamed) shows partial support across multiple screen readers, with JAWS, NVDA, and Narrator yielding mixed results depending on the browser. The alertdialog role has been more consistently supported, with all tested screen readers confirming compatibility. However, the application role lacks any data, highlighting a gap in testing that users can help fill. The aria-activedescendant attribute has partial support, with results showing variability among different browsers and screen reader combinations. Notably, some features, like aria-autocomplete, show almost no support, with many screen readers failing to function as expected. The site emphasizes the importance of community contributions to keep the data current and useful, especially since many results are several years old.