DreamBot is an experimental IRC bot totally written in Perl. Its main features include a totally dynamic user and channel list (no need to deal with text files), a learning ability that's similiar to infobot, built-in seen and topten talkers support, notes/memos, pasting of Freshmeat and Slashdot news, and Babelfish (Altavista) translation. DreamBot doesn't require any extra Perl modules.
Drawtool is an application that reads in simple vector geometry from stdin and displays it in a gtk window. Similarly, it will write data onto stdout as generated by click-drag mouse movements. It can be used to prototype graphical ideas quickly, provide a networked whiteboard or draw pretty patterns with minimal effort.
Dr. Geo is an interactive geometry program that is distributed as a universal portable application. It allows one to create a geometric sketch and manipulate it according to its constraints. It is usable at home or at school, in primary or secondary education. It is simple and effective with extended features including scripting and programming.
dpkg-sn is a textual navigator for Debian/GNU Linux systems. It provides recursive exploration on main fields of each Debian package (.deb) installed on the system. It is also possible to search and view files owned by a package. The selection of a package-group or a file-group is made with regular expressions.
The "dpkg" suite contains the programs which handle Debian (.deb) packages. It was developed on Debian GNU/Linux but can be used on all Linux distributions and most Unix systems. The "dpkg" command can be used to install, remove and manage .deb binary packages, and it maintains a package database which gets updated on changes. It is also a front-end to the low-level "dpkg-deb" tool, which is oriented towards manipulating archives. However, the primary interface to dpkg is the "dselect" program, which is used to get and display packages for the user to select for (de)installation.