jspm is a package manager for the SystemJS universal module loader, built on top of the dynamic ES6 module loader.
With jspm load any module format (ES6, AMD, CommonJS and globals) directly from any endpoint such as npm and github with flat versioned dependency management. Any custom endpoints can be created through the Endpoint API.
For development, load modules as separate files with ES6 and plugins compiled in the browser.
For production, optimize into a bundle, layered bundles or a self-executing bundle with a single command.