UA Parser
Lightweight JavaScript-based User-Agent string parser. Supports browser & node.js environment. Also available as jQuery plugin.
JSON Editor Online
A web-based tool to view, edit and format JSON
Axios
Promise based HTTP client for the browser and node.js
Sherlock
Natural-language event parser for Javascript
Underscore
JavaScript's utility _ belt
Loglevel
Minimal lightweight logging for JavaScript, adding reliable log level methods to wrap any available console.log methods
Visibility.js
Visibility.js allows you to determine whether your web page is visible to a user, is hidden in background tab or is prerendering. It allows you to use the page visibility state in JavaScript logic and improve browser performance by disabling unnecessary timers and AJAX requests, or improve user interface experience (for example, by stopping video playback or slideshow when user switches to another browser tab).
Intercooler Js
Making AJAX as easy as anchor tags
Rambda
Faster alternative to Ramda in just 10kB
JS Signals
Custom Event/Messaging system for JavaScript inspired by AS3-Signals
Backbone Layout Manager
A layout and template manager for Backbone.js applications.
Backbone Deep Model
Improved support for models with nested attributes.
jStorage
jStorage is a simple key/value database to store data on browser side. As a bonus it is also a local pubsub platform to sync data between tabs/windows
Graphql Editor
GraphQL Visual Node Editor
Jsface
Small, fast, elegant, powerful, and cross platform JavaScript OOP library. Support main(), singleton, super call, private, mixins, plugins, AOP and more.
Cloudinary Js
Cloudinary JavaScript library
Machina.js
js ex machina - finite state machines in JavaScript