Chex 2.4

With this program, you can change extensions on files. It's the Cocoa version of the command line ACP tool chex (change extension) and is a bit more sophisticated but GUI apps sometimes have to be. You can add as many extensions to your files all at once, remove extensions successively by submitting the 'empty' extension. Chex checks all renames for potential conflict before an operation and gives you the chance to back out.