I have been looking for any application that keeps all my non-Apple apps updated. I believe that I have found such and application. The folks at CoolOSXApps.net turned me on to AppFresh. AppFresh is a free utility for OS X that keeps all your applications on your Mac up to date. AppFresh checks the internet for new releases and updates. AppFresh appears to covers software updates from Apple and other Developers software and can be used as a replacement for Apple’s own Software Update application to provide one central place to make sure you’re up to date on all of your installed applications.
Download it here