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Editor’s note: The following review is part of Macworld’s Summer of Mac Gems series. Each business day until the middle of August 2008, the Macworld staff will use the Mac Gems blog to briefly cover a favorite free or low-cost program. Visit the Mac Gems homepage for a list of past Mac Gems.
If you’ve got a bunch of files that need renaming, Many Tricks’ Name Mangler 2.0—a major update to a previous Mac Gem, File List—is my favorite tool to use. You just drag your files into its window, choose your renaming options, and click a button.
The range of easy-to-use renaming options includes find-and-replace, numbering, case-changing, extension-setting, adding prefixes and suffixes, and removing and inserting characters.

There’s even a mode for using a special scripting language for more-advanced procedures. A live preview shows you how each file’s name will be changed before making the change.