The NETTUTS blog has this new tutorial posted (including a screencast) showing how to make a web application similar to the Address Book on Apple's OS X operating system.

As we all know, WordPress is so extensive that you can use it for nearly anything. There are even articles on sites with crazy titles such as 101 alternative uses for WordPress. So I thought, hey, why not? I bet a lot of people want to create their own Web Apps, and essentially WordPress can do that for you. In this video tutorial, we're going to make an online Address Book.

Building on a WordPress base and including jQuery and a Live Search Plugin, they create the multi-pane look and feel, styled largely with CSS. The end result shows your address groups, the members of that group and the selected member's information in the far right pane.

As always, the complete source can be downloaded.