Ghost Inspector is an automated website testing and monitoring service. It allows you to easily record or create automated browser tests that check the functionality of your website, then run them continuously from the cloud to catch regressions.
Karate is the only open-source tool to combine API test-automation, mocks and performance-testing into a single, unified framework. The BDD syntax popularized by Cucumber is language-neutral, and easy for even non-programmers. Besides powerful JSON & XML assertions, you can run tests in parallel - which is critical for HTTP API testing.