How to extend the functionality of Open and Save dialogs of OS X applications? On Windows there are several third-party applications that can be used to improve the standard Open and Save dialogs.

I am looking for features like:


Being able to delete files from the these dialogs.
Being able to move files.
Remember dialog size or common directories per application (not all apps are able to do things like this).


If the solutions are commercial, please mention the price.
Step one - try the free trial of DefaultFolderX (30$).

Step two - buy it.

These is no step three. It's that good.