third-party plug-ins and special effects have already been available for the software, today's news opens up Final Cut Pro X for third-party app developers to further streamline the editing workflow.. This is the time we allowing third-party app integrations at this level that tie Apple spokesperson said.. Apple is calling these third-party integrations workflow extensions, add clip markers, and playback between the apps and Final Cut timeline. The first apps to be integrated today are Frame.io, CatDV, and Shutterstock. Apple says it's working on few more, and it will be adding more third-party extensions, like transcription service Simon Says, on ongoing basis.