This Firefox add-on helps with one such issue, navigating tabs: * Single Key Tab Switch https://addons.mozilla.org/en-US/firefox/addon/single-key-tab-switch/

This Firefox add-on helps with one such issue, navigating tabs: * Single Key Tab Switch https://addons.mozilla.org/en-US/firefox/addon/single-key-tab-switch/ https://addons.mozilla.org/en-US/firefox/addon/single-key-ta... I configured mine to use Vim navigation keys (h for left, l for right). As long as the focus isn't in an input field, it works great.