AstPlanDesigner 0.1 download and have fun with Asterisk!
AstPlanDesigner 0.1 is a visual dial plan designer. It aids you in building a dial plan by drawing your plan. It is a good start for cumbersome extension.conf creation. Since it is written in Java, it will run anywhere.
If you an Asterisk voip/pbx user or developer, give it a go! It is free too.
Here is a screenshot!