AppFresh

If you are like me and like to install lots of software on you Mac, then you certainly need AppFresh.  AppFresh will help you keep all your applications, widgets, preference panes and application plugins up to date.

By default, the main screen will display all the software that has updates available. As you can see I have some software listed more than once e.g. Acorn. The scan was so complete that it even scanned my attached Drobo. As you select each item, you can see where the software is located at the bottom of the screen. For each selection you can also right-click, and Install. For the most part, this worked but not always.