Good one!

From all the stand-alone Exif Editors out there, this is the best one. And I have tried them all.

Nice GUI, everythings pretty self explaining. In a minute you know what to do.
Performance is also okay: My setup: MBP, 2.2Ghz, i7, 8MB RAM. Program processes 2-4 Photos in a second (jpg, average size 5MB), depending on file size and format.

Had one little issue with the program, so I shoot out an email to the support team. I admit, without having big hope for a quick reply … and, Martin responded almost immediately.
(Martin, thanks, appreciate it!)

Long story short: I recommend the Exif Editor.

Vacheron C. about Exif Editor, v1.0.8