Looking for Flash APE (Actionscript Physics Engine) 20 year-old tech

I am making a cool flash game and I asked chat gpt how I can import a smart kit that will handle bounding physics colliders stacked for a wallpaper's areas you can't walk in. (see similar Unity screenshot explaining the blocks in white). The player collision system with grass nodes, enemies, and spikes and stuff is all made simple if I had APE. It was lost to time though, their main website is gone and their deposit was also lost to time. 
Any of you have a similar Flash AS3 physics engine or APE folder itself? Would love you forever if you found it and shared it to me. Will make my life so much easier if I don't have to hand-make collision systems using QuadTree and spatial partitioning and all this trigonometry... when APE would do a 50x better job automatically.
Thanks