Prototype Carousel Class

If you liked the post about YUI Carousel Component but prefer Prototype / Scriptaculous as your favourite javascript libraries then this is for you: Prototype Carousel Class.

JavaScript Image Cropper

I wish I had found this JavaScript Image Cropper UI (using Prototype and Scriptaculous) before we added another one to a project.

Prototype JavaScript Windows

Another great extension built on top of Prototype and Scriptaculous: Javascript Popup Windows

Prototype overview

Jonathan Snook has some great cheat sheets of the Prototype library.
I would love to see the same for script.aculo.us. *hint*