Control Flow

• async - Async utilities for node and the browser.
• q - A tool for making and composing asynchronous promises in JavaScript.
• step - An async control-flow library that makes stepping through logic easy.
• contra - Asynchronous flow control with a functional taste to it.
• Bluebird - fully featured promise library with focus on innovative features and performance.
• when - A solid, fast Promises/A+ and when() implementation, plus other async goodies.
• ObjectEventTarget - Provide a prototype that add support to event listeners (with same behavior of EventTarget from DOMElements available on browsers).
• sporadic - Composable concurrency abstractions (such as streams, coroutines and Go-like channels) on top of promises, for Node and browser engines.