DeadLock!

It is a free tool to delete files blocked by something you do not know. LockHunter is useful for fighting against malware, and other programs that are blocking files without a reason. Unlike other similar tools it deletes files into the recycle bin so you may restore them if deleted by mistake. Integrates into Explorer menu. At the moment LockHunter is in beta stage. So use it with care!

Solution for "cannot delete" problems on Windows

FileASSASSIN is an application that can delete any type of locked files that are on your computer. Whether the files are from a malware infection or just a particular file that will not delete - FileASSASSIN can remove it. The program uses advanced programming techniques to unload modules, close remote handles, and terminate processes to remove the particular locked file.

A neat free utility that helps you to take control of any file or folder when it is locked by some application or system. For every locked resource, you get a list of locking processes and can unlock it by terminating those processes. EMCO Unlock IT offers Windows Explorer integration that allows unlocking files and folders by one click in the context menu.

Delete files that are difficult to delete, such as some files left by viruses and trojans, or files with corrupted file names. This program can also delete files like the "index.dat" files, which store Internet history, by scheduling them for deletion upon system restart. Select a file to delete from the built-in file browser or drag a file to the applications icon or window from Windows Explorer.

File & Folder Unlocker is a powerful yet easy-to-use system utility that gives you complete control over the locked files and folders on your computer. Like our other free utilities, File & Folder Unlocker is free for both commercial and non-commercial use.

Free File Unlocker is an essential free utility to delete currently Used, locked, undeletable, busy files. Works with all 32bit and 64bit versions of Windows and Windows Server.

ThisIsMyFile is a small, fast tool for quickly unlocking and deleting locked or protected files on Windows. It's helpful for those times Windows locks up a file and makes it so that you can't remove it. Sometimes a simple reboot resolves the issue but this small app takes care of it quickly without reboot and with no installation needed.