Twitter Based Apps
Bubble-T : Et si Twitter votait?
Is it true that, "New York is the city that never sleeps!"? Do Londoners send more Tweets than New Yorkians'? Is Oslo a bigger Tweeter than Munich? Is Tokyo as much into Tweets as Barcelona? Has San Francisco calmed down after all that talk about the iPad? Tweet-o-Meter Knows!
Find Who Follows Whom on Twitter - the quickest way to see who several Twitter users have in common
Twitter’s popularity has spurred the development of countless high-quality apps that let you use Twitter from the web, desktop or even your mobile phone. If you’re an avid Twitter user, chances are you’re using one of these Twitter Desktop Applications that basically allow you to receive and post Tweets from your desktop. Meaning, you don’t have to visit your Twitter.com page from time to time to find out what’s new about your Twitter friends. 20 Best Twitter Desktop Apps for Windows | Hacking Truths
Gunfollow - When simply unfollowing someone is not enough, send them a message.