Then.js
The fastest, smallest, fully compatible, full-featured asynchronous module!
Meld
AOP for JS with before, around, on, afterReturning, afterThrowing, after advice, and pointcuts
Mediator.js
An implementation of the mediator pattern for asynchronous events in Javascript
Rill
:left_right_arrow: Universal web application framework.
Weld
Template antimatter for Node.js (Browsers too!)
Webix
Stable releases of Webix UI - JavaScript library for building mobile and desktop web apps
Routie
a tiny javascript hash router
Redux Elm
The Elm Architecture in JavaScript http://salsita.github.io/redux-elm/
Cellx
Ultra-fast implementation of reactivity for javascript
Serenade.js
Client side MVC framework
Tempo
Tempo is an easy, intuitive JavaScript rendering engine that enables you to craft data templates in pure HTML.
Venus.js
where bugs go to die
Inject
AMD and CJS dependency management in the browser
Paperclip.js
reactive DOM template engine built for speed, and extensibility
Stapes
a (really) tiny Javascript MVC microframework
Gas
Google Analytics on Steroids. A Google Analytics implementation with more power features.
T.js
A tiny javascript templating framework in ~400 bytes gzipped