Sonic is a platform that integrates remote control debugging and automated testing of mobile devices, and strives to create a better user experience for global developers and test engineers.

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

Charles is a HTTP proxy that enables you to see traffic between your machine and the backend

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.

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.

Free & OpenSource REST API Testing Tool for all levels in a Test Pyramid