Vim/emacs key bindings for the browser like Vimium. Prevent me from quitting the browser accidentally - Ctrl + Q Tree Style Tabs which I would happily pay for

Vim/emacs key bindings for the browser like Vimium. Prevent me from quitting the browser accidentally - Ctrl + Q Tree Style Tabs which I would happily pay for. Third party bookmark service like Pinboard, although this could be accomplished by an app as well.