The best replacement for starling is grackle.

The best alternatives to starling are rated as following:
★★★★★  grackle
★★★  crow
★★  flixel
★★  cocos2d
★★  purple martin
★  citrus
★  flashpunk
★  libgdx
★  haxe
★  mark breland
★  blue jay
★  genome2d
★  blackbird
  honeyghan
  blitting
  breland
  black bird

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

Other search terms related to starling and their ratings are:
★★★★★ flashdevelop
★★★ away3d
★★ this ring lyrics
★ box2d
★ nape
You have in mind a companion for starling and it is not yet here? Propose!



Google Trends

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starling
grackle
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