Jquery Timeago
Timeago is a jQuery plugin that makes it easy to support automatically updating fuzzy timestamps (e.g. "4 minutes ago").
Xsm
State Management made eXtraordinarily simple and effective for Angular, React, and Vue
Pilot
Pilot — multifunction JavaScript router.
Gas
Google Analytics on Steroids. A Google Analytics implementation with more power features.
Buster
A powerful suite of automated test tools for JavaScript.
Web Rx
WebRx is a Javascript MVVM-Framework built on ReactiveX for Javascript (RxJs) that combines functional-reactive programming with Observable-driven declarative Data-Binding, Templating and Client-Side Routing.
Paperclip.js
reactive DOM template engine built for speed, and extensibility
Boiler
Boiler is a utility library that makes every day tasks in JavaScript easier by providing over 115 methods that work on arrays, collections, functions, numbers, objects, and strings.
Highway
A fast, lightweight and simple Javascript routing library with no dependencies.
Uranium
Universal css-in-js media queries for React Native and React
Knockout Projections
Knockout.js observable arrays get smarter
Platform.js
A platform detection library that works on nearly all JavaScript platforms.
Marko
Marko template engine
Rivets
Declarative data binding facility
Ink
An HTML5/CSS3 framework used at SAPO for fast and efficient website design and prototyping
Jsviews
Interactive data-driven views, built on top of JsRender templates
Curl
A small, fast module and resource loader with dependency management. (AMD, CommonJS Modules/1.1, CSS, HTML, etc.)