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

Fully integrated API and web service testing capabilities that automate end-to-end functional API testing.

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.

Professional software tool for HTTP testing and debugging

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

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.