컨텍스트 메뉴에서 "다음으로 열기" 정리하는 방법.
How to Clean Up Your Mac's “Open With” Contextual Menu
열라 삽질 하다가 아래 명령어로 간단히 해결
~pico$ sudo /System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Support/lsregister -kill -r -domain local -domain system -domain user
[출처] http://lifehacker.com/5708820/how-to-clean-up-your-macs-open-with-contextual-menu