Apple ProKit

Apple ProKit is recommended for users of Final Cut Pro, Motion, Soundtrack Pro, DVD Studio Pro, iPhoto, Aperture, Final Cut Express, Logic Pro, MainStage, Logic Express, and iAd Producer.

Among other things, it improves the support for PopOver and Font Smoothing, fixes leaks and improves stability for the color picker and timecode interface in Final Cut Pro and Motion, solves the issue with the scrubber appearance in Logic Express and Logic Pro, and improves compatibility when importing assets from older versions of Soundtrack Pro.