Modeless Keyboard Navigation od James Stout

This extension lets you do more in Firefox using keyboard shortcuts. It is closely based on Vimium-FF (see https://04.yfhome.xyz/en-US/firefox/addon/vimium-ff/ for details). Unlike Vimum-FF, keyboard shortcuts are available at all times -- no need to press Esc. Keyboard shortcut defaults have been adjusted so that all shortcuts require modifier keys:

<c-,> open a link in the current tab
<c-.> open a link in a new tab
<a-f> open multiple links in new tabs
<c-[> cycle forward to the next frame
<c-;> open bookmark
<c-'> open bookmark in a new tab

To configure more keyboard mappings or adjust other settings, click the "V" icon in the upper right of the window and then "options".