I have the following sources enabled: main, universe, restricted and multiverse. On Ubuntu Software Center on 11.10 I see two packages for Emacs: The GNU Emacs editor (metapackage) The GNU Emacs editor What is the difference between metapackage version and non-metapackage one? By the way, this thread What differences are there between the various version of Emacs available? also explains the difference between two Emacs versions: Emacs and Emacs-snapshot, and interestingly I don't see these packages now on my Ubuntu Software Center.