Bower installs dependencies in a flat folder structure, whereas NPM nests them. This makes it much easier to use Bower with a client-side module loader. Bower

Bower installs dependencies in a flat folder structure, whereas NPM nests them. This makes it much easier to use Bower with a client-side module loader. Bower is also (easily) configurable where bower_components will be, whereas I don't think NPM is as easily.