Letter: U
- udev-084-13: A userspace implementation of devfs
- units-1.85-1.2.1: A utility for converting amounts from one unit to another.
- unix2dos-2.2-26.2.1: unix2dos - UNIX to DOS text file format converter
- unixODBC-2.2.11-6.2.1: A complete ODBC driver manager for Linux.
- unzip-5.52-2.2: A utility for unpacking zip files.
- urw-fonts-2.3-6.1: Free versions of the 35 standard PostScript fonts.
- usbutils-0.71-2: Linux USB utilities.
- usermode-1.85-2.2: Tools for certain user account management tasks.
- utempter-0.5.5-7.2.1: A privileged helper for utmp/wtmp updates.
- util-linux-2.13-0.20: A collection of basic system utilities.
- uucp-1.07-11.2.1: The uucp utility for copying files between systems.