I can't speak for other companies, but I myself am a developer, and if I decided to close shop I would give the decency of announcing my products as being released to the public domain. I'd also most likely release my source code where doing so would not jeopardize the integrity of the application. There are circumstances where this doesn't happen for one reason or another. One example is WeatherPanel. Martian just disappeared one day and was never seen again. Was it intentional, or perhaps was he a one man shop and some catastrophic event happened (i.e. death). Yet the app still works. The support website itself only recently went rogue. I believe you can still purchase the application through retail channels however. Now where does that app fall in the scheme of things? Altogether, this is a touchy subject.

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