Dashes Pro

DashesPro is a multilingual hyphenation application for Macintosh. It supports RTF, QuarkXpress Tag, StyleEdit, and plain text formats, and can be used with QuarkXPress, Microsoft Word, PageMaker, or any application that supports discretionary hyphenation.

DashesPro is fully AppleScript compatible. It has an extensive Apple event dictionary.
It is both scriptable and recordable applications.