It's a shame because Adobe have done some really interesting work.
I'm no expert in lower level tech but I used one of their tools to compile libjpeg to AS3 bytecode. I was able to write a file uploader half in AS3 and half in C. Faster than any other uploader I've ever used with the ability to reliably compress jpegs before sending from the client machine.
Unfortunately, I don't think they ever completely open sourced the work they did and it was a lab project so they don't support it (though it's been a long time since I looked).
It was Adobe Alchemy, now http://adobe-flash.github.io/crossbridge/ but doesn't look very alive. I remember I used it to compile Box2D and Bullet...took some finagling, but was doable in a few days.
I'm no expert in lower level tech but I used one of their tools to compile libjpeg to AS3 bytecode. I was able to write a file uploader half in AS3 and half in C. Faster than any other uploader I've ever used with the ability to reliably compress jpegs before sending from the client machine.
Unfortunately, I don't think they ever completely open sourced the work they did and it was a lab project so they don't support it (though it's been a long time since I looked).