Popular Flavors of Linux

Damn Small

 * Difficulty: Intermediate
 * Desktop: JWM
 * Package Manager: DEB
 * Description: Damn Small Linux is an extremely small, lightweight, and powerful distribution. It has everything needed for basic computer function and is excellent on older computers.
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 * Website:

Knoppix

 * Difficulty: Beginner/Intermediate
 * Desktop: LXDE
 * Package Manager: DEB
 * Description: Knoppix is a Live CD distribution that is capable of system rescue, everyday use, and more.
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 * Website:

Kubuntu 8.04 LTS

 * Difficulty: Beginner
 * Desktop: KDE
 * Package Manager: DEB
 * Description: Kubuntu is Ubuntu but with the KDE desktop. It is 100% compatible with Ubuntu.
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 * Website:

Puppy 4

 * Difficulty: Beginner/Intermediate
 * Desktop: JWM
 * Package Manager: PET
 * Description: Puppy Linux is a lightweight yet full featured distribution that can load the entire operating system into a computer's RAM.
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Xubuntu 8.04 LTS

 * Difficulty: Beginner
 * Desktop: Xfce
 * Package Manager: DEB
 * Description: Xubuntu is Ubuntu but with the Xfce desktop. It is 100% compatible with Ubuntu.
 * Screenshot:
 * Website:

31 Flavors of Linux (Plus 4)