TaskExplorer - Explore all the tasks (processes) running on your Mac with TaskExplorer.
LockHunter - It is a free tool to delete files blocked by something you do not know.
Process Explorer - The top window always shows a list of the currently active processes, including the names of their owning accounts, whereas the information displayed in the bottom window depends on the mode that Process Explorer is in: if it is in handle mode you'l…
IObit Unlocker - Never Worry about “Cannot Delete Files” on Your PC
MiTeC Task Manager Deluxe - MiTeC
EMCO UnLock IT - Unlock file or folder, locked by the system or by an application