I totally agree with you that the site needs more work to make these things more discoverable. We don't have a package manager (I built one more than ten years

I totally agree with you that the site needs more work to make these things more discoverable. We don't have a package manager (I built one more than ten years ago, it never got traction and it was very naive) but there are many libraries floating around. Our forums and mailing lists are the most common places to find resources. The IDE also has an online portal inside it that can be used to share code, most people use it to share demos, samples and libraries.