Even though it's smart enough to single out jquery plugins and label them as such, my stance is that all plugins are just scripts with a dependency on some library. So this site is meant to be a host for ALL javascript projects, whether they're libraries, frameworks, plugins, or standalone scripts, and whether they're front-end or back-end.
It follows the CommonJS spec for reading data from a package.json file, but also provides on-the-fly creation for projects that don't have one (with a package.json generator).
Any and all feedback welcome. For the curious, it's a Rails 3.1 app with a js-heavy front-end (being on the jquery-rails / jquery-ujs team, it's what I know best), though I've been considering switching the package uploader and processor mechanism to node.