Duplicate "Open With..." Entries in Mac OSX

Removing duplicate items in the Right-Click open with menu can be done as follows:


1. Terminal: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/\
LaunchServices.framework/Versions/A/Support/lsregister -kill -r -domain local\
-domain system -domain user
2. Relaunch Finder: Ctrl+Option+Click Finder -> Relaunch