Seriously though, I haven't given that a lot of thought yet. But I do think there is a need for such a software tool, but I have neither bothered to look particularly hard for one, nor thought much about building one (other than, as I mentioned above, the idea of a quick and dirty Grails app with a very minimal feature set).

Out of curiosity... are you developing such a tool? Or thinking about it? If so, I'll spend some more time thinking about this stuff and try to give you my thoughts. Feel free to email me if you'd like to have that discussion offline (in case this thread disappears into the bowels of HN or whatever.)