8 Best Twitter Stats

1. TweetStats

Using this application you can graph your Twitter stats including tweets per hour and tweets per month.

2. Twitterholic

Their twittastic robots scan the Twitter public timeline for new twits to tweet. A few times a day, they calculate individual statistics for each twittering twit in their database.

3. Twitter Grader

Twitter Grader is a free tool that allows you to check the power of your twitter profile compared to millions of other users that have been graded.

4. tweetVolume

Enter keywords or a phrase and see how often it appears on Twitter.

5. twInfluence

twInfluence is a simple tool for measuring the combined influence of twitterers and their followers, with a few social network statistics thrown in as bonus.

6. Twist

Trendistic is a tool that allows you to track trends on Twitter, similarly to what Google Trends does for Google searches.

7. TwitterCounter

Get a clear overview and graph of your twitter stats.

8. Xefer

It can pick the user’s tweets (must be publicly available) and display data in the form of chart.

Source: http://pelfusion.com/tools/8-best-twitter-statistics-and-analytics-tools/