delorimier:/# apt-cache search icq

centericq - A text-mode icq client based on ncurses
everybuddy - An all in one messaging client
everybuddy-cvs - All in one Instant Messaging client, cvs snapshots
gabber - A GNOME Jabber client.
gnomeicu - Small, fast and functional clone of Mirabilis' ICQ
jabber - Daemon for the jabber.org Open Source Instant Messenger
kicq - ICQ (I seek you) client for KDE
konverse - a Jabber client for KDE
krolden - ncurses based ICQ clone for console replacing zicq
libicq-dev - library implementation of Mirabilis ICQ (Development files)
libicq1 - library implementation of Mirabilis ICQ
licq - ICQ clone (base files)
licq-dev - LICQ Development and Header Files
licq-plugin-autoreply - LICQ auto-replyer plugin (noninteractive)
licq-plugin-console - Text front-end plugin for LICQ
licq-plugin-forwarder - LICQ message forwarder plugin
licq-plugin-gnome - Graphical front-end plugin for LICQ using Gnome libraries
licq-plugin-gtk+ - Graphical front-end plugin for LICQ using GTK+ libraries
licq-plugin-kde - Graphical front-end plugin for LICQ using QT2+KDE
licq-plugin-qt2 - Graphical front-end plugin for LICQ using QT2
licq-plugin-rms - LICQ remote management server for telnet LICQ access
micq - text based ICQ client with many features
task-gnome-net - GNOME network applications
wmbiff - A dockable app that displays information about mailboxes
xmms-modplug - ModPlug plugin for XMMS
zicq - small ncurses based ICQ client (dummy package)
gabber-ssl - A GNOME Jabber client.
licq-ssl - ICQ clone (base files)

apt 0.5.3 for linux i386 compiled on Mar  7 2001 19:25:55
Usage: apt-cache [options] command
       apt-cache [options] add file1 [file1 ...]
       apt-cache [options] showpkg pkg1 [pkg2 ...]

apt-cache is a low-level tool used to manipulate APT's binary
cache files, and query information from them

Commands:
   add - Add an package file to the source cache
   gencaches - Build both the package and source cache
   showpkg - Show some general information for a single package
   stats - Show some basic statistics
   dump - Show the entire file in a terse form
   dumpavail - Print an available file to stdout
   unmet - Show unmet dependencies
   search - Search the package list for a regex pattern
   show - Show a readable record for the package
   depends - Show raw dependency information for a package
   pkgnames - List the names of all packages
   dotty - Generate package graphs for GraphVis

Options:
  -h   This help text.
  -p=? The package cache.
  -s=? The source cache.
  -q   Disable progress indicator.
  -i   Show only important deps for the unmet command.
  -c=? Read this configuration file
  -o=? Set an arbitary configuration option, eg -o dir::cache=/tmp
See the apt-cache(8) and apt.conf(5) manual pages for more information.