Angular Meteor
Combining the simplicity and power of AngularJS and Meteor
Hasher
Browser history manager for rich media websites
Lovli.js
A boilerplate for developing react+redux applications with rethinkdb/horizon as realtime database and express for the server.
Flagsmith Frontend
Web App and Mobile App for Flagsmith
Thinkjs
Use full ES2015+ features to develop Node.js applications, Support TypeScript.
Skel
A lightweight responsive framework for the www
Scale App
scaleApp is a JavaScript framework for scalable One-Page-Applications
YUI3
YUI is a free, open source JavaScript and CSS library for building richly interactive web applications.
Terrificjs
Terrific JavaScript Framework
Somajs
Scalable javascript framework
Angular.js
AngularJS lets you write client-side web applications as if you had a smarter browser. It lets use good old HTML (or HAML, Jade and friends!) as your template language and lets you extend HTML’s syntax to express your application’s components clearly and succinctly
Tungstenjs
Tungsten.js is a modular framework for creating web UIs with high-performance rendering on both server and client.
Optics
Profunctor implementation of Lenses, Prisms, Traversals, Isos, etc.
Stapes
a (really) tiny Javascript MVC microframework
Delorean
An Agnostic, Complete Flux Architecture Framework
Dozerjs
Foundational Framework for NodeJS Web Services
Pagerjs
The Single Page Application Framework for KnockoutJS