Download Vimium-FF for Firefox. The Hacker's Browser. Vimium provides keyboard shortcuts for navigation and control in the spirit of Vim. This is a port of the popular Chrome extension to Firefox. Most stuff works, but the port to Firefox remains a work in progress.
Very useful and pleasant to use. You almost don’t have to move your fingers out of the keyboard with this extension.
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Same, I use this one too. I think I used to used vimium but switched to tridactyl a while back.