Not freeware anymore (10$)!

New Features

New 'shuffle' mode (Command-S in Sort pop-up) to sequentially but randomly modify filenames; useful for images for a picture frame, for instance.
Bug Fixes

Fixed permissions issues for users running on non-admin accounts

Name Mangler 2.1.1 - Mar 25 2010

New Features

• New 'shuffle' mode (Command-S in Sort pop-up) to sequentially but randomly modify filenames; useful for images for a picture frame, for instance.

Bug Fixes

• Fixed permissions issues for users running on non-admin accounts

Name Mangler 2.1 - Mar 22 2010

New Features

• Automatic updating via Sparkle

Bug Fixes

• Name Mangler no longer chokes on colons or slashes in pre-existing file names (you still shouldn't use those, though)

Name Mangler 2.0 - Feb 14 2008

New Features

• Files can now be listed in a less detailed way (cf. "General" preferences), allowing you to survey a larger number of files at once
• You can now have File List ignore " ", "-", "_", and "0" characters when determining the common prefix (cf. "Processing" preferences)
• By default, image files are now represented by previews instead of generic icons (cf. "General" preferences)
• Streamlined the user interface and turned this into a universal binary

Bug Fixes

• Path Finder support on Mac OS X 10.5
• Sorting by path

Other

• Changed product name to Name Mangler