From the website “The Dojo Toolkit v1 Script is a little tool I made for Adobe After Effects CS3 and above that gives you quick access to a bunch of setup presets, expressions, and utilities. You can easily apply a letterbox or setup a camera rig with a click of a button, apply certain expressions to properties instantly, take screenshots of your compositions, and much more.” – VinhSon Nguyen
More info at Creative Dojo.
Like After Effects Scripts? Check these out.
Lines Creator for After Effects – Lines Creator is a script that connect objects using shape layers. It even comes with build in basic anchor point alignment tool
aescripts + aeplugins BG Renderer Pro for After Effects – BG Renderer allows you to render your Render Queue items in the background while you can continue working in After Effects