If you don't know what it is, it is something like CCleaner. I consider them complementary. http://privazer.com/download.php Release notes v1.6.0 (03 January 2013) - Improved secure files deletion - Improved registry cleanup - Improved free space cleanup on FAT - Improved free space cleanup on NTFS - Improved smart cleanup of free space - Improved MFT cleanup - Improved bad sectors handling - New cookies management - Improved Hibernation management - Improved Pagefile.sys management - Improved restore points management - Improved localstorage management - Improved UI From the limited testing I have done so far, it is very thorough. Do not let the sometimes poor translation/spelling fool you. I'll do my share to help the developer improve on that.