Modeless Keyboard Navigation is a free Chrome add-on developed by James Stout. This add-on is designed to enhance your browsing experience by providing modeless keyboard navigation similar to Vimium. With Modeless Keyboard Navigation, you can use keyboard shortcuts at any time, making it easier to navigate through web pages without having to reach for your mouse.

The add-on is based on Vimium, a popular navigation tool developed by Phil Crosby and Ilya Sukhar. However, unlike Vimium, Modeless Keyboard Navigation allows you to use the keyboard shortcuts without entering a specific mode. This means that you can use the shortcuts anytime, even while typing in text fields or interacting with other elements on the page.

Modeless Keyboard Navigation utilizes modifier keys for its default bindings, taking inspiration from Emacs rather than Vim. This allows for a more intuitive and flexible navigation experience. If you're familiar with Emacs or prefer a modeless approach to keyboard navigation, this add-on is worth trying out.