"Unclutter" windows functionality

[Michael Williams]

I was wondering if Blaockbox had an equivalent to the "Unclutter
windows" functionality in KDE. As far as I remember (it's been a while)
this would shuffle all the open windows up to the top left of the
desktop to, as the name suggests, unclutter the desktop. If this isn't
within the scope of a lightweight window manager like Blackbox could
anyone suggest an alternative separate program. Googling hasn't thrown
anything up.
-- 
Michael