https://dynomapper.com/blog/27-accessibility-testing/246-top-25-awesome-accessibility-testing-tools-for-websites

http://romeo.elsevier.com/accessibility_checklist/

https://addons.mozilla.org/en-US/firefox/addon/tota11y-accessibility-toolkit/?src=ss

https://chrome.google.com/webstore/detail/axe/lhdoppojpmngadmnindnejefpokejbdd/related

http://www.userlight.com/apps/mwac/