Vimium is a chrome extension that provides keyboard shortcuts to navigate and control the browser inspired by Vim editor. It comes very handy when navigating between pages as well as on the same page and still be mouse-free. Keyboard shortcut examples:
dto go down half pageuto go up half pageggto go the top of the pageGto go to the bottom of the pagegtto go to next tab to the rightgTto go to previous tab to the left