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.
Modernizr
Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the user’s browser.
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.
Fetchival
window.fetch wrapper for writing simple and expressive requests
Cellx
Ultra-fast implementation of reactivity for javascript
Flagsmith Frontend
Web App and Mobile App for Flagsmith
Angular History
A history service for AngularJS. Undo/redo, that sort of thing. Has nothing to do with the "back" button, unless you want it to.
Somajs
Scalable javascript framework
RequireJS
A file and module loader for JavaScript
UI Router
The de-facto solution to flexible routing with nested views
Redux Loop
A port of elm-effects and the Elm Architecture to Redux that allows you to sequence your effects naturally and purely by returning them from your reducers.
YUI3
YUI is a free, open source JavaScript and CSS library for building richly interactive web applications.
Refluxjs
A simple library for uni-directional dataflow application architecture inspired by ReactJS Flux
Postal.js
JavaScript pub/sub library supporting some advanced subscription features, plus message capture and replay
Mustache.js
Minimal templating with {{mustaches}} in JavaScript
Fishbone.js
A super lightweight (½kb) JavaScript library with automatic method chaining, automatic context binding, event support and simple inheritance. c-{{{-<
Sea.js
A Module Loader for the Web