What are some Chrome extensions that provide keyboard-centric unified command prompt functionality in the style of Quicksilver for Mac or Gnome Do?
Bonus points for extensions that are most versatile and free-form.
This question appears to be off-topic. The users who voted to close gave this specific reason:
Ferro is a graphical predictive command line for Chrome commands, with a UI similar to Quicksilver. One difference is commands can appear in the left section if there are no arguments or the argument is the current tab or current tab's domain.