Lock-UnMatic 1.5 for Mac can be downloaded from our website for free. The actual developer of this free Mac application is Oliver Matuschin. The application lies within System Tools, more precisely File Managers.
From the developer:
Lock-UnMatic shows processes blocking a file from being moved or deleted.
Sometimes, files on the Mac cannot be deleted, moved or renamed. This can be caused by insufficient access rights, or because some processes are still using these files.
Unfortunately, the OS X Finder doesn't tell the user which processes exactly are causing the lock.
You may want to check out more software for Mac, such as MassReplaceIt, CopyPath or ACTPrinter Mac, which might be similar to Lock-UnMatic.