Letter: U
- ucarp-1.2-4.al3: Common Address Redundancy Protocol (CARP) for Unix
- ucl-1.03-6.al3: Portable lossless data compression library
- udftools-1.0.0b3-7.al3: Linux UDF Filesystem userspace utilities
- udunits-1.12.4-11.al3: A library for manipulating units of physical quantities
- ufraw-0.11-3.al3: Tool to retrieve raw image data from digital cameras
- ufsparse-2.1.1-1.al3: A collection of sparse matrix libraries
- uim-1.3.0-1.al3: A multilingual input method library
- ularn-1.5p4-8.al3: Simple roguelike game
- ulogd-1.24-2.al3: The userspace logging daemon for netfilter
- uncrustify-0.30-1.al3: Reformat Source
- unison-2.13.16-3.al3: File-synchronization tool
- unpaper-0_2-2.al3: Post-processing of scanned and photocopied book pages
- unrtf-0.20.2-2.al3: RTF to other formats converter
- unshield-0.5-6.al3: Install InstallShield applications on a Pocket PC
- up-imapproxy-1.2.4-7.al3: University of Pittsburgh IMAP Proxy
- upx-2.02-1.al3: Ultimate Packer for eXecutables
- uqm-0.6.2-1.al3: The Ur-Quan Masters, a port of the classic game Star Control II
- uqm-content-0.6.0-2: Base content files for The Ur-Quan Masters
- urlgfe-1.0-1.al3: Urlgfe download manager
- usbsink-0.3.1-1.al3: USBSink is a GNOME program for automatic file synchronization over USB
- ushare-0.9.10-1.al3: UPnP (TM) A/V Media Server
- util-vserver-0.30.212-3.al3: Linux virtual server utilities
- utrac-0.3.0-8.al3: Universal Text Recognizer and Converter
- uudeview-0.5.20-9: Applications for uuencoding, uudecoding, ...
- uuid-1.5.1-2.al3: Universally Unique Identifier library
- uw-imap-2006b-1.al3: UW Server daemons for IMAP and POP network mail protocols