[lateforwork]

Palm OS does not get enough credit as the progenitor of modern handheld experience, including especially iOS.

iOS shares many similarities with Palm OS, such as the home screen layout of app icons, the use of full-screen apps without windowing, the absence of an explicit "quit" action, no exposed file system (obvious today, but bold back in those days), a single hardware button to return "home", and so on.

What iOS added is true preemptive multitasking, memory protection, multitouch gestures, physics-based scrolling and so on.

[nofriend]

The first three are presumably just hardware advancements? Apple certainly deserves credit for refining the concept and making it into a neat package.