yargs the modern, pirate-themed, successor to optimist.
The semantic version parser used by npm.
A library for promises (CommonJS/Promises/A,B,D)
Simplified HTTP request client.
simple, flexible, fun test framework
small debugging utility
Packs CommonJs/AMD modules for the browser. Allows to split your codebase into multiple bundles, which can be loaded on demand. Support loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.
Tiny millisecond conversion utility
A querystring parser that supports nesting and arrays, with a depth limit