einstein’s legacy (http://www.einsteinslegacy.com) has released ChapterWork, a Mac OS X utility for working with chapter tracks and markers in your digital movies.
Built on Apple’s AVFoundation technology, ChapterWork frees is designed to free users from using labor-intensive text-based tools and provides a simple and effective graphic interface for creating, updating and internationalizing chapter tracks in your movies, according to the folks at einstein’s legacy. ChapterWork allows you to share the completed output movie via e-mail or using Internet services.
ChapterWork requires Mac OS X 10.9 or higher. It’s available for US$19.99 from the Mac App Store (in the Video category).