It is a _(Common Lisp) *(OS) development platform.

From its home page (see below):

<blockquote>
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<h4>Introduction</h4>

The Movitz system aspires to be an implementation of ANSI _(Common Lisp) that targets the ubiquitous x86 PC architecture "on the metal". That is, running without any operating system or other form of software environment. Movitz is a development platform for operating system _(kernel)s, embedded, and single-purpose applications. There can potentially be several completely different operating systems built using Movitz.

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</blockquote>

<ul class="implementations">
<li>_("Movitz home page"|http://www.cs.uit.no/~frodef/los0/)
</ul>
