In firefox we have "Tree Style Tab" - (https://piro.sakura.ne.jp/xul/_treestyletab.html.en)
I used it for many years - great stuff.
The feature is: When opening a Tab inside a Tab the new Tab is a child - one level down.
Hey @Harald-Koschinski, thanks for the suggestion. I believe this is similar to #14, I'll close this but feel free to move discussion there if anything is missing.
In firefox we have "Tree Style Tab" - (https://piro.sakura.ne.jp/xul/_treestyletab.html.en) I used it for many years - great stuff. The feature is: When opening a Tab inside a Tab the new Tab is a child - one level down.
Kind regards Harald