Jest is a delightful JavaScript Testing Framework with a focus on simplicity.

Burp or Burp Suite is a set of tools used for penetration testing of web applications. It is developed by a company named Portswigger who make freely available a Web Security Academy which has a range of lessons on penetration testing.

API Testing Platform that automatically generates unit test cases with dependency mocks from API calls

k6 Open Source is designed for load testing. Extensible to support other types of testing.

The Complete Continuous Testing Platform Any test. Any device. App quality without limits.

Render your Android screens without a physical device or emulator.