chain

allows you to simply write new commands by just combining existing commands e.g. combine facebook status update and twitter update so that you can update both with a single command. for more information, visit the installation page.

keyscape

the keyscape command adds the ability to navigate to search results using just your keyboard. for more information, visit the installation page.

lyrics

use the "get lyrics" command to find the lyrics for any song. if you have FoxyTunes extension installed, you can also the command to get lyrics for the song that is currently playing in iTunes or any other media player. install here.

stumbleupon (requires stumbleupon extension)

with this set of commands, you can hide your stumbleupon toolbar and control it instead from ubiquity! for more information, visit the installation page.

foxytunes (requires foxytunes extension)

control your favorite media player with this bunch of commands. for more information, visit the installation page.