I used Simple Tab but now it seems outdated. Sidebery gave me the Simple Tab-like functions I was looking for, but also way more! And it looks great! If you want to have workspaces that are easy to sync with other devices ( through your cloud of choice) in json and markdown, this is an excellent extension!

I can finally leave Vivaldi for good

TST but way better, with more customization

Muito bom, uso a algum tempo, recomendo..

Flexible and powerful, yet somehow easy to use and very slick!

I'm using this with the CSS hacks to customize the userChrome, and it's a much better web experience than default browsers. This extension is pretty neat, and does what's needed without using too many resources or getting in the way.

We like the old fashion.