Download of IconLocker 3.2 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free software for Mac OS X was originally produced by The Iconfactory. The software lies within Theming Tools, more precisely Icons & cursors. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
Allows registered IconDropper users to "lock" or write protect ID packs so that the author information and custom pack art cannot be altered or modified. ID packs can be dragged and dropped onto the utility to launch it, and then, through a simple user interface, the author specifies if the pack should be locked or unlocked.
You may want to check out more software for Mac, such as Modena, LeopardDocks or Screen Crosshair, which might be similar to IconLocker.
Icons & cursors