Polypane

Your dev tools make you fast. Now imagine your entire browser is like that. Polyphone is the browser for developers and designers that care about the quality of their work. Develop responsive websites and apps twice as fast and get better results, because you won't be skipping screen sizes and wishing for the best. Build higher quality websites, whether you use WordPress, React, Angular, Svelte, Bootstrap, Drupal, or any other CMS, library, or framework. Polyphone fits with any workflow.

Polyphone has the right tools built-in for developing, debugging, and testing, like devtools extensions, live reloading, accessibility testing, and more. Oh, and you still get the Chromium devtools.