In a nutshell, smuoi provides:
It was designed to be extensible, but has not left the alpha stage so the development of modular applications is not encouraged unless you're happy to break them with updates.
As of August 2009:
smuoi is hosted at Google Code using mercurial.
See http://code.google.com/p/smuoi/ or do:
hg clone https://code.google.com/p/smuoi/
Smuoi is no longer in active development. See my site for successor projects.