The best replacement for away3d is papervision3d.

The best alternatives to away3d are rated as following:
★★★★★  papervision3d
★★★★  flare3d
★★★  three.js
★★  alternativa3d
★★  papervision
★★  minko
★★  stage3d
★★  alternativa
★  sandy
  proscenium

Your alternative for away3d is not listed? Suggest!
Speaking about away3d, one probably shouldn't forget about starling.

Other search terms related to away3d and their ratings are:
★★★★★ starling
You have in mind a companion for away3d and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of away3d in all years. Click on graph for more.
away3d
papervision3d
flare3d