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.

Unifying API testing, API Performance testing, API Mocks and UI testing.

Monitor network requests and API failures with real-time insights

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

The Complete Continuous Testing Platform Any test. Any device. App quality without limits.

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.