Free Software Magazine have an article about the most used GUI util for package management on Debian boxes: Synaptic
Read about it here
If you dont like using the command line, and you want to manage your program installations without typing a command, then read on: this article is for you!
Ladies and Gentlemen: Synaptic!
Synaptic is a graphical user interface (GUI) for managing software packages on Debian-based distributions. If you are using Debian or Ubuntu you will easily find Synaptic in the System Tools menu or in the Administration menu. Synaptic uses the GTK graphic libraries (GNOMEs ones) . So, if you are using GNOME on your debian-based distro you will probably have Synaptic installed as well.