Applitools provides software testing tools for visual testing such as the Eyes API and the Ultrafast Grid.
I have written about how cool visual testing is...to not only find visual bugs but also as a superset of functional testing.
In a nutshell, take this example. Typical testing tools would verify that all of this text is present. The tests would pass and this would be pushed to prod. Applitools looks at the actual screen to determine if it looks the way it's intended to.
