cool debian tools

A few of us, Debian veterans, started naming off cool tools and tricks on IRC for the benefit of a newbie. One person suggested to put this list up somewhere... so here goes:

• apt-file - APT package searching utility -- command-line interface
• auto-apt - package search by file and on-demand package installation tool
• apt-show-versions - Lists available package versions with distribution
• cron-apt - Automatic update of packages using apt
• deborphan - Find orphaned libraries
• apt-listchanges - Display new Debian changelog entries from .deb archives
• apt-spy - writes a sources.list file based on bandwidth tests
• dpkg-repack - generates a .deb from an installed package

Tools for keeners and developers:

• devscripts - Scripts to make the life of a Debian Package maintainer easier
• apt-build - Frontend to apt to build, optimize and install packages
• apt-src - manage Debian source packages
• kernel-package - A utility for building Linux kernel related Debian packages
• debconf-copydb (1) - copy a debconf database (debconf package)

And here are some hidden trix:

• extending sources.list with apt-get.org
• apt-cache policy package - shows what versions of a package are available
• installing from multiple releases apt-pinning

Have more? …please let me know.