Moai Fiddle is an HTML5 interactive code editor.  If you have used jsfiddle before the usage is similar. Just type your Moai code in the editor window and click play. You will see the result on the right.  Underneath the player is the console. Anything typed into this will be executed within the currently running player as Lua code.  On the left is the virtual filesystem, currently a bunch of files from the Moai samples for your script to reference and a copy of the Flower library.

This plugin has been developed solely by the Moai community, thanks to user 'halfnelson', and illustrates the portable power of Moai: write-once, run-a-lot-of-places!  Join the discussion in our forums!