What does open source from top tech companies say about them?

Question

In my eyes, Google and Facebook seem to be competing in open source, with Flutter vs RN/ react, Tensorflow vs PyTorch, Kubernetes, Go, Fresco and so much more. I don't notice Amazon, Apple or Microsoft (although MS definitely do have some, like Typescript and VScode, the volume doesn't compare). Does lack of open source hint at a place that is moving slower, is less developer driven and more management driven, and would be unlikely to grow in the future or has fewer growth opportunities for developers (relatively speaking)?Alternatively, it's just because Google and Facebook are more consumer focused and I've systematically found their contributions, where as Microsoft and AWS are more enterprise.Great, simple OSS catalogs: https://opensource.facebook.com/projects https://opensource.google/projects/explore/featuredI mean, just look at the hideous UI at https://opensource.apple.com/ Do they not care? https://opensource.microsoft.com/?sort=Stars&keyword=&tag=Anyway, does open source give away any information about these companies. I'm trying to understand how to pick companies for employment/ graduating in a few months.

eyelidlessness · Accepted Answer

> I mean, just look at the hideous UI at https://opensource.apple.com/ Do they not care?
This is basically the design language their entire website had during the Leopard/Snow Leopard era. The website continues to serve Prototype.js and Scriptaculous.js, libraries which fell out of favor many years ago. It seems pretty likely whatever system was built hasn't been updated much in years, even though its content continues to be.
I don't know if that suggests they care or not. They care to continue to populate it with new releases, but not to invest in building a newer website.