From Mono

Mono is primarily developed on Linux, and most of its users are Linux users, so it is the platform best supported.

Packages for various distributions are available on our Downloads page.

Mono on Linux supports a number of Linux-specific optimizations.

Distributions

SUSE Linux ships with Mono by default.

The monoppix (http://www.monoppix.com) distribution contains a LiveCD edition of Mono

Content is available under GNU Free Documentation License 1.2 (only text).