Canjs
Can do JS, better, faster, easier.
Thinkjs
Use full ES2015+ features to develop Node.js applications, Support TypeScript.
Hydra.js
Create a scalable, maintainable and module oriented system using Hydra.js
Angular Meteor
Combining the simplicity and power of AngularJS and Meteor
Tungstenjs
Tungsten.js is a modular framework for creating web UIs with high-performance rendering on both server and client.
YUI3
YUI is a free, open source JavaScript and CSS library for building richly interactive web applications.
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
Prime
an OOP javascript library for node.js and the browsers
Scale App
scaleApp is a JavaScript framework for scalable One-Page-Applications
Terrificjs
Terrific JavaScript Framework
Straw
Realtime processing framework for Node.js
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
Dozerjs
Foundational Framework for NodeJS Web Services
Blizzard.js
A promise-based Node.JS library for the Blizzard Battle.net Community Platform API
Knockout
Knockout makes it easier to create rich, responsive UIs with JavaScript