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

Simulate APIs, integrations, and environments at enterprise scale.

Simplifying testing workflows for developers and QA engineers with instant, privacy-first mock file generation.

Next-gen browser to build, test & debug mobile websites.

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.