I consider Mooz's Keysnail Firefox add-on to be the most impressive keyboard oriented browsing tool. It's endlessly configurable, dotfiles in javascript--really nice to work with.

For Chrome, the Vimium extension is very good, but recently I've been having a lot of fun with a similar, more configurable alternative called chromium-vim.

Keysnail: https://github.com/mooz/keysnail/wiki Vimium: http://vimium.github.io/ chromium-vim: https://github.com/1995eaton/chromium-vim