Hi folks, I am just starting a war here. After reading a lot about Linux history, I came to a conclusion that there are only a few( i mean the root nodes ) solid distros availble. My analysis: I have chosen only the root nodes here. I mean that Debian is the root and Knoppix, Ubuntu are leaf nodes. So they are eliminated. 1. Debian 2. Slackware 3. Fedora / RedHat(non-free) SUSE / Opensuse is developed from slackware and Mandriva is developed from RedHat linux. So they cannot be given a place here though they are enterprise class distros. Of these, Debian GNU/Linux is the front runner in OSS with its wider variety and an excellent package manger. But, Redhat is on the move with its budding package kit. Fedora on the other hand contributes the most to FOSS (confirmed even by GNU). This could be easily understood by the fact that every new version of the app is included in the distro. The distro helped GCC and others to become even stronger. Debian is a stable distro . It doesn't bother about cleaning the bugs in newer apps and tried to use the solid apps which were tested thoroughly in other distros. Even when half stable, it doen't use the packages. Slackware has its own domain. It enjoys its stature even now. But though we experiment with it and succeed its only the enterprise people who actually handle it.