The best replacement for papervision is away3d.

The best alternatives to papervision are rated as following:
★★★★★  away3d
★★★  sandy
★  sandy 3d
★  alternativa3d

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Speaking about papervision, one probably shouldn't forget about augmented reality.

Other search terms related to papervision and their ratings are:
★★★★★ augmented reality
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