[jack_h]

> Also, surprisingly, both Amazon and Apple aren't really known for prolific OSS contributions according to their size.

I can't speak to Amazon, but Apple has quite a few prolific OSS contributions. Off the top of my head there's llvm/clang, cups, swift, GCD, and webkit.

[Cookingboy]

But...but those aren't JS frameworks or used by web devs, so obviously they don't count! /s