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.

Monitor network requests and API failures with real-time insights

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

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

Radically better observability stack

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