Tab previews are in the works for a future release of Mozilla Firefox. In current versions of Firefox you hover your mouse over a non-active tab (i.e. any
I miss the days with Opera. Not only could it group tabs, but it had previews too. Mouse gestures. Keyword searches. Page link filters and batch operations. RSS-reader. Chrome didn't even exist back then, and IE and Firefox are still playing catch up. Kinda amazing to think about it.
Vivaldi is the spiritual successor, but having to use chromium rendering engine, it's so many concessions and steps back. Has the mouse gestures, tho.
Brave has configurable keybinds, you can set any key you want to do anything.
However I still need to use the vimium extension to have proper keyboard only web navigation, because with the exception of qutebrowser none of the "popular" web browsers have the select link mode with the f key.