Comment 16 for bug 111818

Maybe this will clarify: the "open with" process in Firefox is unusable under linux.

To Reproduce: Click on any file that the browser does not handle internally. In my case that may be a CSV file. From the download dialog, I have the option to download it, or "open with" another application. If the app I want to open it with is not listed, I have to browse for it. For many new or even moderately experienced Linux users, this means, "Game Over." There needs to be an 'app browser' a la XFCE which lists "suggested applications," then "all applications."

Same thing in Preferences->Applications. By the content type there is an "Action" drop-down. If the desired app is not in that list, then the user is forced into the bowl-o-spaghetti that is the linux filesystem and application hiding^W organization scheme.