Palm OS on the iPhone? Check. Android on the iPhone? Quasi-check. Newton OS on the iPhone? As of today, that's a trio of affirmations. Developer Matthias Melcher has wisely used a good bit of his free time to port one of the world's forgotten-but-not-forgotten operating systems onto Apple's iOS platform, and while things are understandably sluggish right now, he's currently working on performance optimizations that'll hopefully have it running like a clock before long. He's also made the source code available to anyone willing to tinker with the emulator, and somehow or another, he's even managed to bring over the much-hyped handwriting recognition aspect. Don't believe us? Hop on past the break and hit play.

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Einstein brings Newton OS to the iPhone, handwriting recognition and all