1)   FILExtinguisher 2.0
FILExtinguisher securely deletes all confidential information. FILExtinguisher offers 14 delete methods that vary from a fast zero-write to an extremely high security NATO level. Entirely wipe unallocated or slack space with ease.
File eraser, File eraser utility, data eraser, data eraser utility, disk wipe, disk wipe utility, Hard Drive wipe, Hard Drive wipe utility, data erasure, data destruction,

 2)   NT Data Wiper 2.0
Advanced data erasure tool which removes all deleted confidential record information from your hard drive and safeguards the computer privacy. If you wipe already deleted files with NT Data Wiper, they cant be restored by any recovery tools.
nt data wiper, data wiper, disk wiper, file wiper, wipe disk, wipe data, wipe files, erase drive, erase data, disk eraser,