REST API test framework. BDD and exploits promises

A Yeoman generator to author libraries in ES2015 (and beyond!) for Node and the browser.

An in-place DOM diffing library

A template language for incremental-dom or DSL for javascript views

Hybird is a lightweight IM framework, currently supports China Mobile Fetion protocol and xmpp protocol.

A MVVM-Framework for Google Dart.

No longer maintained, see pinned issues

IRC bot that is being used on number of wikimedia channels

PureMVC MultiCore Framework for Dart

Source of MiniTwitter and Modifiy of iyomumx