Firefox. It’s a competitive browser that isn’t Chrome. By developing software for it I keep the web free.

Safari. What I got on iOS.

Edge. Chrome-based but works better with Microsoft Narrator for screen reader testing.

Chrome. I do slum, I wrote a heart rate monitor web app that needs the Chrome-only BTLE API. What am I going to do? Learn how to write a native app for Windows and MacOS and Android and iOS or use Chrome?

BluFy. Alternative web browser for iOS probably a Chrome fork, it supports BTLE so I can do biofeedback on my iPad.