Wajig is a single commandline wrapper around apt, apt-cache, dpkg, /etc/init.d scripts and more, intended to be easy to use and providing extensive documentation for all of its functions.
With a suitable sudo(1) configuration, most (if not all) package installation as well as creation tasks can be done from a user shell. Wajig is also suitable for general system administration.
Since release 2.0.0, a GUI command 'gjig' is also included in the package.
k8to commented regarding the similar package feta that was featured here recently,
wajig seems to require sudo, which rules it right out for my purposes.
user passwords giving root priveledge? Having to create extensive command additions to the unpleasantly syntaxed sudoers file? No thanks!
But I think both feta and wajig make use of sudo.
More information on this package can be found on the Debian web site.
(If there is a package you would like to see featured here, go to the userinfo page and follow the directions there to submit your entry.)