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###The Bower Approach: Global Resources, Like <script> Tags

###The npm Approach: Common JS Modules, Explicit Dependency Injection

The Bower Approach: Global Resources, Like <script> Tags

The npm Approach: Common JS Modules, Explicit Dependency Injection

EDIT (May 2019) "Bower has finally been deprecated. End of story." (h/t: @DanDascalescu, below, for pithy summary.)

And, while Yarn is still active, a lot of the momentum for it shifted back to npm once it adopted some of Yarn's key features.

I think the previous posters have covered well some of the basic distinctions. (npm's use of nested dependencies is hugely helpful in managing large, complex applications.)

I think the previous posters have covered well some of the basic distinctions. (npm's use of nested dependencies is indeed very helpful in managing large, complex applications, though I don't think it's the most important distinction.)