[pault]

If you use chrome, check out the vimium extension. It maps most browser actions to vim keys and makes mouseless navigation super easy.

[j_s]

QuteBrowser "is a keyboard-focused browser with a minimal GUI." https://qutebrowser.org/

You know you're onto something when the #1 documentation link is a key binding cheatsheet!

[Vinnl]

Actually works well on Firefox 57 (soon to be released) as well :)

(And those on older versions can use VimFx until 57 is released.)