Ubiquity is an abandoned mozilla project.
I used to use it all the time on a Pale Moon installation in Windows.
I just saw on the bitbucket page that the community version is still being supported.
I was wondering if the addon ever caught on in the Debian world, and if it's still being used.
If you're talking about this:
~$ aptitude show xul-ext-ubiquity Package: xul-ext-ubiquity State: not installed Version: 0.6.1~pre20111123-1 Priority: optional Section: web Maintainer: Debian Mozilla Extension Maintainers <firstname.lastname@example.org> Architecture: all Uncompressed Size: 3,487 k Depends: iceweasel (>= 4.0), libjs-jquery Enhances: iceweasel Provides: iceweasel-ubiquity Description: browser interface based on natural language input Ubiquity was a Mozilla Labs experiment that was in development from 2008 to 2009. Its purpose was to explore whether a radically different type of interface to the Web, a task-centric natural-language-based command line, could help get common Web tasks done faster. Ubiquity is still available here as Iceweasel/Firefox extension. Homepage: https://mozillalabs.com/ubiquity/
...I followed the link in the APT description, and it appears to be dead.