Similar to Upstart

Mir (software)

Snap (software)

Software Updater

Ubiquity (software)

Ubuntu (typeface)

Ubuntu Edge

Ubuntu Touch

Ubuntu-restricted-extras

Ubuntu Titling

Ubuntu Software Center

Uncomplicated Firewall

Unity (user interface)

Wubi (software)

Canonical (company)

Mark Shuttleworth

Jane Silber

List of POSIX commands

Template:Unix commands

Agrep

Alias (command)

Anacron

GNU Autotools

Banner (Unix)

Basename

Biff (Unix)

BlackArch