axe-cuprite

https://github.com/Guided-Rails/axe-cuprite

axe-cuprite runs the axe-core accessibility engine against pages rendered in Capybara system/feature tests and exposes the results as RSpec matchers (be_axe_clean / be_accessible). Unlike Deque's official axe-core-capybara gem, it never touches Selenium-specific driver internals: axe is driven entirely through Capybara's driver-neutral JavaScript API, which is what makes it work on Cuprite. Cuprite is the only supported and tested driver.