Official Muse website
Muse.mu is the official Muse website.
.mu is the top level domain of Mauritius, but is sometimes used as a TLD for music related sites due to its "mu" being a constituent of "music", in a way similar to that in which .dj and .tv are marketed.
Designers
The Absolution, Black Holes and Revelations and The Resistance era versions were designed by Splendid. Previous designers include Nonplane.
muse-official.com
muse-official.com is the website's old domain name. It was active between 2001 to April 2003. Activity at other times is unknown. Sometimes in the Welcome Page Muse used to put running Jokes, like "Oops! That Portugal gig isn't happening now" back in May, 2001.
muse-official.com news archive
musclemuseum.com
musclemuseum.com is an older incarnation of the website, from the Showbiz era.