Twitter Influence and Tracking Tools

Here is a quick list of Twitter tools, Websites with differing measurements of influence.

Update 8-4-2010:  I found these two Twitter visualization tools that I like:

1.)  http://isparade.jp  This is a Japanese site for Twitter visualizaiton.

2.)  http://twittersheep.com  TagCloud from the bios of followers.  

For real tracking, I like Filtrbox ( http://www.filtrbox.com/ ).  Fitrbox has tool to check your influence, http://www.filtrbox.com/twitter.htm ranking you on a scale of 1-10 (10 is highest).  Also, you can access this through their API. 

Twitter Influence Trackers:

http://www.twitalyzer.com

http://twitter.grader.com

http://www.filtrbox.com/twitter.htm

http://addictomatic.com

http://tweetstats.com

http://twittercounter.com

tweetreach.com

http://twinfluence.com

http://www.buzzom.com

http://twscore.net

http://friendorfollow.com

http://klout.com

http://topsy.com

http://followerwonk.com

Twitter Activity 

http://topsy.com

Twitter Statistics

http://tweetstats.com

twitteranalyzer.com  <~ Results not valid

TweetEffect.com <~ Results not valid. Did not even come close to showing which tweets yield new followers or unfollowers.