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.

Robotium is an Android test automation framework that has full support for native and hybrid applications.

Postman is an API platform for building and using APIs. Postman simplifies each step of the API lifecycle and streamlines collaboration so you can create better APIs—faster.

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.

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