The GNOME 2.2+ WindowManager

From the readme: MetaCity? is not a meta-City as in an urban center, but rather Meta-ness as in the state of being meta. i.e. MetaCity? : meta as opacity : opaque. Also it may have something to do with the Meta key on UNIX keyboards.

The first release of MetaCity? was version 2.3. MetaCity? has no need for your petty hangups about version numbers.

MetaCity? configuration is through GConf

The author (Havoc Pennington) says: MetaCity? is a "Boring window manager for the adult in you. Many window managers are like Marshmallow Froot Loops; MetaCity? is like Cheerios.