In the wake of the Google Chrome OS news, it's worth taking a look back at those other OSes that just didn't quite make it. Not to say that Chrome OS is doomed, but these are murky, unforgiving waters.
Some of the products on this list were or are vital to the computing industry as we know it, especially the dearly departed Palm OS and the sure-to-infuriate-fanboys inclusion of Linux. But then...who the hell ever heard of Inferno? [Silicon Alley Insider via Switched]