Suggest an alternative to

firefox

Torturing Firefox with userchrome.js and userchrome.css in response to Mozilla's successive degradation of the browser window.

Why do you think that https://github.com/icetbr/webext-gmail-persistent-sidebar is a good alternative to firefox

A URL to the alternative repo (e.g. GitHub, GitLab)

Here you can share your experience with the project you are suggesting or its comparison with firefox. Optional.

A valid email to send you a verification link when necessary or log in.