From Urbantick

Brian Solis and JESS3 created a visual depiction of the, what they call, Twitterverse (as in universe actually). The graphics shows loads of twitter apps neatly ordered and lined up on concentric rings of types. These range form Geographics like trendsmap to rich media like yFrog, to mobile apps like echofone, to twitter search like twazzup.

Click here for an interactive version.