Shredder8

Now up to 300% faster! Shredder allows to permanently destroy file contents and wipe previously used storage space, so that secret data can't be restored even by advanced recovery tools. Deleting a file or directory does not remove the contents. Recovery tools can be used to restore the previous content. Shredder8 allows you to destroy the file contents prior to deleting files and directories. Shredder8 also allows you to clean the existing free space of a storage device, where old file content may still exist. You can choose out of a variety of standard cleaning algorithms, like U.S DoD 5220.22-M, British HMG IS5 (Enhanced), Russian GOST P50739-95, German VSITR or just do a quick shred, which should be enough for most SSD based storage devices and USB flash drives.