Letter U
udftools: Linux UDF Filesystem userspace utilities
unace: Linux program for uncompressing *.ace archives
unarj: An uncompressor for .arj format archive files.
unrar: Extract, test and view RAR archives
unison: File-synchronization tool
upx: The Ultimate Packer for eXecutables
upx: The Ultimate Packer for eXecutables
uudeview: Smart decoder for uuencode, xxencode, Base64 and BinHex
uoproxy: Proxy server for ultima online
uox: Ultima online server
ushare: Universal Plug'nPlay (uPNP) Media Server
ump: Advanced calculator with support for matrices and graphs
usbsink: Program for automatic file synchronization over USB
usbsink: Program for automatic file synchronization over USB
unrtf: Converts from RTF to other formats
uberkey: Keylogger
udpcast: UDP broadcast installation
unfs3: UNFS3 user-space NFSv3 server
unixbench: BYTE's UNIX Benchmarks
uni2ascii: Convert between UTF-8 Unicode and 7-bit ASCII equivalents
umlspeed: Compiler for C-style language of UML notation
utf8proc: Library for processing UTF-8 encoded unicode strings
umbrello: unified modelling language (UML) diagrams modeller
unoconv: Tool to convert between any document format supported by OpenOffice
unzsplit: Glue, decompress and restore zsplit images
ucarp: Common Address Redundancy Protocol (CARP) for Unix
ucl: UCL compression library