Click Framework

Piggydb uses Click Framework. Click Framework is a web application framework written in Java. There seems to be no de facto standard for web frameworks in Java world, and the frameworks written in Java tend to be more and more complex. Click Framework would make a difference in that situation.

I've asked the Click Framework project team to add Piggydb to their "Sites Using Click", and they were kind enough to do that.

Click Framework
http://click.sourceforge.net/