Do you want to create a simple URL shortener service site like Ow.ly, Bit.ly or Zly.me? YOURLS, a simple set of open source PHP scripts that allow you to run your own URL shortening service. You can make the service private or public, and you can also pick custom keyword URLs, it comes with its own API. The best function of YOURLS URL shortener is that supports tracking clicks so you know how many clicks totally for each short URL. The installation and configure is very easy and you can follow the instruction page or readme file for details.

In addition YOURLS also provide a WordPress plugin that will automatically generate short URL for each post and send a tweet on your Twitter account with the post title and short URL.

• http://code.google.com/p/yourls/