Complete list of iphone folder apps and all their features

Hello, I am considering creating a folder application for the iphone, Before I create the application I want to know what folder applications are currently available and all of their features. I would like someone to create a complete list of "folder" related Iphone applications. For example, there are a number of "folder" applications that make the folder in a secret location. Some "folder" applications create folders that are password protected. Some "folder" applications encrypt the data within the folder. I would like the complete list of iphone applications that involve "folders" as their primary function. Please consider the possibility that an application involving folders may not have the word "folder" in its title/name. For each "folder" application found, I would like a listing of all of its features. Completeness of the features offered is most important, The features can be copied from the applications sales page...a simple cut and paste of the list of features is acceptable. You do not need to use or review the actual program. This should be a simple project. I would do it myself but I have some concern that I may not find all the folder related applications available.