Some examples of alt-seven in action.
LacesIDE is an open source JavaScript editor and sandbox environment that you can install and run locally or on your own public server. It was built using a slightly older version of alt-seven, but it demonstrates the features of the framework quite well. The whole thing is less than five thousand line of code, small enough to review the whole thing, but big enough to give you a good idea of how you can organize an alt-seven application.