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

The world's leading uptime monitoring service.

Testing and validating REST services in Java is harder than in dynamic languages such as Ruby and Groovy. REST Assured brings the simplicity of using these languages into the Java domain.

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.

Easy-to-use website monitoring and uptime monitoring service in one

Puppeteer is a Node.js library which provides a high-level API to control Chrome/Chromium over the DevTools Protocol.