The path module from Node.js for browsers
the stream module from node core for browsers
node.js util module as a module
browser-side require() the node.js way
Node.js's require('assert') for all engines
Implements the node.js require.resolve() algorithm
resolve function which support the browser field in package.json
watch mode for browserify builds
a browserify plugin that runs various optimizations, so you don't have to install them all manually. makes your bundles tiny!