Sift.js
filter arrays using mongodb queries
Moleculer
:rocket: Progressive microservices framework for Node.js
Mediator.js
An implementation of the mediator pattern for asynchronous events in Javascript
JsRender
A light-weight but powerful templating engine, highly extensible, without DOM or jQuery dependency.
Director
a tiny and isomorphic URL router for JavaScript
Use.js
An AMD/RequireJS plugin for consuming incompatible JavaScript files.
Redux Side Effects
Redux toolset for keeping all the side effects inside your reducers while maintaining their purity.
Prime
an OOP javascript library for node.js and the browsers
Nunjucks
A jinja2-inspired templating system for javascript
Ink
An HTML5/CSS3 framework used at SAPO for fast and efficient website design and prototyping
Postal.js
JavaScript pub/sub library supporting some advanced subscription features, plus message capture and replay
Imagesloaded
JavaScript is all like "You images done yet or what?"
Stately.js
Stately.js is a JavaScript based finite-state machine (FSM) engine for Node.js and the browser.
Grips
Simple-logic templates
Canjs
Can do JS, better, faster, easier.
Tungstenjs
Tungsten.js is a modular framework for creating web UIs with high-performance rendering on both server and client.
Sproutcore
JavaScript Application Framework - JS library only