My favourite programs in Linux

Messenger Service : KLinpopup (based on Samba)
http://www.gerdfleischer.de/klinpopup.php
CHM reader : Kchm
http://www.kde-apps.org/content/show.php?content=21837
PDF reader - linux version : (Of courses from Adobe) http://www.adobe.com/products/acrobat/readstep2.html
Mono (.net framework for Linux) :
www.go-mono.com

About my debian box

A year before, I was using RedHat 9. This is true that Red Hat 9 is the tablest distribution from RedHat ( at least in my opinion). But after that Red Hat has cut off the Red Hat series Linux and change to Fedora Core. Well, I've tried Fedora Core 1, 2 and 3, they have some improvements, but they are only the testing distribution ( really? ).
I've changed to Debian box - Sarge ( now in testing status ) a half of year before, and saw that it is my looking Linux box. Although this testing version has some broken packages, but they are updated everyday. Now I can test new applications, which usually require new libraries.
Now on Debian box, I can installed new programs, which can help me do my work. You can say that other distributions can do that. But I'll say they aren't comfortable like Debian ( I've ever used Redhat 9, Fedora 1,2,3 , Slackware, Mandrake, FreeBSD).
I think Debian is the best Linux distribution for the people like me, a student who like new applications of Linux, and testing programs.