1)   ArchiCrypt Shredder 3.1.2
In addition to the permanent deletion of sensitive data, ArchiCrypt Shredder cleans the free space on hard drives, removes tell-tale file fragments from cluster tips, wipes out traces from the last online surfing and deletes entire hard drives.

 2)   macDiskCleaner 1.0
macDiskCleaner is the program for deleting any files defined by the user. You can clean or all the 'My computer' at once, or only the one disk or folder. Algorithm of the searching is very rapid, so cleaning won't take much time.