IAccessible2

An open accessibility API specification originally developed by IBM and donated to the Linux Foundation. IAccessible2 extends Microsoft Active Accessibility (MSAA) to support the richer semantic information needed by Web 2.0 applications, including WAI-ARIA roles, states, and live regions. It provides equivalent functionality across Windows, Linux, and Java platforms, enabling assistive technologies to access detailed information about complex web components like rich text editors, dynamic content regions, and custom widgets that MSAA alone could not adequately describe.