Mock and modify HTTP request for exploratory testing.

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

Don’t just observe. Take action. The only app monitoring platform built for developers that gets to the root cause for every issue.

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

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.

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