Hippo

Hippo is a Contextual Menu Module (CMM) that adds an 'Open With' submenu to the Finder's pop-up contextual menu, allowing you to open files in the application of your choosing, rather than being forced to use the application that created the files. This release features tighter integration with AppleScript and the ability to customize the Open With menu. The unregistered version will only let you open files with the first five applications in its menu, and it is disabled after you have opened 500 files.