Tweetburner – Tweetburner gives you click stats for the links you posted in Twitter.

Tweetburner provides an API for communicating with the service. In the near future you can request statistics, Twurls and the infamous top 10 lists through our API.

Get Started with Tweetburner Now!

Useful Tools and API's
Easy and Free Twitter Tools
Useful, Free and Easy Social Networking Tools