Requestly is an open-source tool that simplifies API development, testing, mocking, and integration for developers and QAs.

Streamline your API testing, integration testing and test data management.

The World's first AI Driven Enterprise Software Reliability Platform

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.

Hoppscotch is an open-source API development ecosystem that helps you create and test your API requests saving precious time in development.

Selenium automates browsers. That's it! What you do with that power is entirely up to you.