LockHunter - It is a free tool to delete files blocked by something you do not know.
RAM Booster (Memory Cleaner) - RAM Booster (Memory Cleaner) is one of the classical applications that act as a powerful RAM booster, enabling you to monitor device storage and RAM information at the same time.
Wise Force Deleter - Delete Any File That Windows Can’t Delete.
Auto RAM Cleaner - Auto RAM Cleaner is a cost-effective application that lowers the burden on the phone by cleaning RAM & background processes when the Screen turns on.
FileASSASSIN - FileASSASSIN is an application that can delete any type of locked files that are on your computer.
RAM Cleanup - RAM Cleanup is one of the powerful applications that clean up your memory to speed up your device, saves battery, and cool CPU in one click.