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

Fast, easy and reliable testing for anything that runs in a browser, Cypress is the new standard in front-end testing that every developer and QA engineer needs.

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.

Mock and modify HTTP request for exploratory testing.

A browser extension and Ruby gem to improve the debugging experience when testing Rails applications

End-to-End Testing & Debugging powered by OpenTelemetry