Twitter Network

See relationship between twitter accounts

Dynamic Network

See common followers and friends.
Just type Twitter user names and get dynamic network instantly into your browser.

Twitter dataviz

Statistics about an user

Most influent followers
Geolocated tweets
Most retweeted tweets
Top hashtags
Applications used to tweet
Most tagged users...

Twitter app and coffee

Free tool

Up to 3 accounts (for graph).
Limited to 200 followers and 200 friends per studied user.

Twitter app and coffee