So what’s the third browser? The link won’t let me read the rest of the article because of my ad blocker.
The third one recommended in the article is Microsoft Edge.
#9 Get ublock orgin. I can read the article. Google search it for your web browser.
I use Firefox myself that has been modified a bit.
http://davidswebsite.com/Firefox_tabs/firefox_tabs.html
Staying for now at version 89.0 as later ones may not let me change the look to what I want
Try Vivaldi. You can modify easily.
https://vivaldi.com
Plus they now have a email program. In pre Beta and the below link to enable may not work. I was not able to.
https://vivaldi.com/features/mail
How to enable it.
https://www.omgubuntu.co.uk/2020/11/vivaldi-browser-integrated-email-client