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.

Voiden is a developer-first API client with local storage, Git-integrated, all based on markdown + offline support.

End-to-End Testing & Debugging powered by OpenTelemetry

Hand-crafted lightweight Rest Client for testing APIs. Supports collections, environments, git collaboration and local storage.

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

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