Yes, the Grammarly Editor supports keyboard navigation.
To navigate through the Grammarly Editor interface without using a mouse or a touchpad, please press F6 on your keyboard to highlight the first element on the page.
Then, use F6 to move to the next element or Shift+F6 to focus on the previous one. To navigate within the focused section, press Tab or Shift+Tab. Use Space or Return to activate the link or click the button, and then press Tab to reach the next element.
Note: If you use macOS, please visit this page to learn more about using the function keys on your computer.