Overwritten uses 'srm' to rename and overwrite files repeatedly in order to ensure they cannot be recovered, even through extensive examination. It can easily be used to delete text files that may contain sensitive information such as credit card numbers. Overwritten will not, however, remove the resource fork of a file, so take this into consideration before employing it. The source code is available under a BSD license and if you wish to localize this app in another language, be sure to e-mail me.
Mac OS X 10.1 or later