As you may know, when you delete a file, it is not deleted fisically, but it is deleted from a registry until it is overwritten by other file. FileWing takes advantage of that fact and can recover recently deleted files that has not been oerwritten yet.
FileWing scans your HD searching for recently deleted files and features them in a list. In that list you can select the ones you want to recover.
Not only can it recover files but it can safely delete files so they can't be recovered.
In short, FileWing can recover deleted files or totally delete files so other programs cannot recover it in a near future.