The Expression Toolbox was created to help take the pain out of using and locating expressions. At some point you've probably come across an expression that you find yourself using on every other project you work on. The question is where do you store this expression? I noticed that a lot of people were storing their expressions in text files, without documentation of how they were used or where it could be found. Without knowing who created the expression or how to use it, you're left waiting on an answer from a mailing list or web forum on how to properly apply it.

Enter the Expression Toolbox:

The Toolbox is a centralized location for you to store commonly used expressions, as well as making it easy to apply and retrofit to the comp you're currently working on. You can group expressions that require multiple properties and controls to be enabled.

A Few Features:

• Grouping (assign a group 'name' - or select an existing one at any time to view all of expressions in the group only at the same time)
• Retrofitting ( this will pull layer names out of the expression, and allow you to select from a list generated from the current comp, which layer SHOULD be referenced)
• Auto generation of layer effects ( based on expression code; Sliders, radio buttons, angles, points, etc.. will be generated automatically if they are referenced in the expression you are using, this is optional of course )
• Sort by expression name, author and date ( these are created as expressions are entered into the library )
• Expression Editing ( go back and edit author name, expression name, description - usage information, or the expression itself at any time )
• Ability to apply current expression to the currently selected property of any layer.
• Distributable ( the library file names and content is entirely up to you, and they are lightweight and transferable to others)
• Merging of libraries ( you are able to import libraries from others and consolidate them into one "main" library if you wish )

Home Page - http://aescripts.com/expression-toolbox/