1. unix-options
    unix-options is a library for processing Unix-style command-line arguments
  2. unix-opts
    This is a minimalistic parser of command line options
  3. Unlicense
    The Unlicense is a free public domain license
  4. URI
    Libraries for dealing with URIs
  5. uri-template
    uri-template is an implementation of the URI Template proposed standard draft version 01 as a
  6. url-rewrite
    URL-REWRITE programmatically rewrites (X)HTML documents such that certain attributes values are replaced by others
  7. userial
    A Common Lisp library for serializing to binary buffers
  8. USN Journal
    The USN Journal keeps track of changes made to files and directories on an NTFS volume
  9. usocket
    USOCKET is a networking portability layer for BSD-style sockets
  10. Usocket-UDP
    UDP networking patch for USOCKET