How the Selector script works
The usual process for selecting multiple layers is: Scroll to the top of your comp, hold shift on the keyboard, click on the top or bottom layers, then scroll all the way back to where you were.
No more! Just select your layer, choose above or below, and hit go! Selector does the rest.
Choose to unlock and select any layers that have been locked.
Skip layers that have been marked as "Shy"
Is it really that much quicker than selecting the layers by hand?
This really depends on how many layers you have, the script was created while working on a project with over 500 layers in a composition.
Testing the script in this composition, it took around 6 seconds for the script to select all the layers, whereas completing the action by hand took around 10 seconds.
The beauty of the script, is that you select the layers without having to scroll the composition window, so you never lose your place and can carry on editing without worrying about if you've selected all the layers.
Is this After Effects script Free?
The selector script is available on a "Pay what you like" basis, this means the script is available for free by choosing £0 at the checkout, or you can choose to pay the suggested price of £3.99 which will go towards future development of more scripts.