IAccessible2

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IAccessible2 is an accessibility API for Microsoft Windows applications. Initially developed by IBM under the codename Project Missouri,^[1] IAccessible2 has been placed under the aegis of the Free Standards Group, now part of the Linux Foundation.^[2] It has been positioned as an alternative to Microsoft's new UI Automation API.

While UI Automation is trumpeted as "royalty-free",^[3] IAccessible2 claims to be an "open standard".