ReadyAPI is a low-code API testing platform for development teams that care about creating test automation across any workflow.

Design, debug, and test APIs locally or in the cloud

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.

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

Swagger UI allows anyone — be it your development team or your end consumers — to visualize and interact with the API’s resources without having any of the implementation logic in place

Test, scrape, generate, and automate without the pain and expense of hosting your own headless browsers.