Several tools are available for automated accessibility testing of GUIs:

1. WAVE Web Accessibility Evaluation Tool: Identifies accessibility issues on web pages.

2. Lighthouse: Audits web pages for accessibility, performance, and best practices.

3. Axe: Automated accessibility testing tool for web and mobile applications.

4. JAWS Inspect: Identifies accessibility issues in web and desktop applications.

5. NVDA Screen Reader: Can be used for automated testing with scripts.

6. Accessibility Insights: Tool for testing web and mobile applications.

7. IBM Equal Access Toolkit: Automated testing tool for web and desktop applications.

8. Deque Systems' WorldSpace: Automated accessibility testing for web and mobile.

9. Siteimprove: Automated testing tool for web accessibility.

10. (link unavailable) Automated testing tool for web accessibility.

These tools can help identify accessibility issues, but it's essential to complement automated testing with manual testing and user testing to ensure comprehensive accessibility.

Note: Some tools may have limitations or require configuration for GUI testing. Research and evaluate the tools to determine the best fit for your specific needs.