Applications specifically designed to clean up a computer drives can be easily classified. To begin with we can define the set of general cleanup tools including CCCleaner, a freeware program that are used to clean up your harddisk of non-critical files and recover room on the disk. Another class is the Privacy Cleaner style utilities clean up internet tracks and typed URL entries from the most common browsers including 'evidence' and 'privacy' cleanup tools. Now there is also porn detection software that is able to detect the exact source of pornography style images and movies or many other undesirable files and can manage the cleanup of the detected objects. And a final category of programs is the data erasing program which can overwrite with 1s and 0s, random data remaining on the hard drive's slack space, such that it may not be found by others.

A quick scan of the internet exposes a robust subset of cleanup software tools that can approach the drive cleanup task by implementing different techniques. More than a few free disk cleanup products out there are capable of helping with your cleanup regime. But this is not all these applications can perform; as an example, several can do free space cleaning, scan and remove inappropriate material, discover and clean copyrighted material, and find out how to recover disk space.