Thinkjs
Use full ES2015+ features to develop Node.js applications, Support TypeScript.
Nunjucks
A jinja2-inspired templating system for javascript
Lazy Load Xt
Lazy load XT is a jQuery plugin for images, videos and other media
Hydra.js
Create a scalable, maintainable and module oriented system using Hydra.js
Hinclude
declarative client-side inclusion for the Web
Routie
a tiny javascript hash router
Functional Js
A functional js library that facilitates currying and point-free / tacit programming
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.
T.js
A tiny javascript templating framework in ~400 bytes gzipped
Robotjs
Node.js Desktop Automation.
Paperclip.js
reactive DOM template engine built for speed, and extensibility
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
Fluxxor
Flux architecture tools for React
Lovli.js
A boilerplate for developing react+redux applications with rethinkdb/horizon as realtime database and express for the server.
Invisible
Invisible.js: Reusable models for the client and the server