Onfire.js
onfire.js is a simple events dispatcher subscribe / publish library (< 1kb). async, simple and usefull.
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).
Curl
A small, fast module and resource loader with dependency management. (AMD, CommonJS Modules/1.1, CSS, HTML, etc.)
Twitterlib
Twitter JavaScript API library
P
Peer-to-peer networking with browsers
Cram
Simple AMD and CommonJS module bundler.
Tweet
put twitter on your website with tweet, an unobtrusive javascript plugin for jquery
Knockout Projections
Knockout.js observable arrays get smarter
Fast Memoize.js
:rabbit: Fastest possible memoization library
Diagram
JS tool for making node graphs. Inspired by dependency graph
Radio
Dependency-free Chainable Publish/Subscribe Library for Javascript
Js Cache
jsCache is a javascript library that enables caching of javascripts, css-stylesheets and images using my localStorage polyfill. This is especially useful when serving your website for mobile phones, which have limited HTTP caching available, but also speeds up your site in an ordinary web browser as it saves HTTP requests and loads all files asynchronously.
Gas
Google Analytics on Steroids. A Google Analytics implementation with more power features.
Bootstrap Ajax
A library for adding declarative ajax functionality to your website
Node Pg Migrate
Node.js database migration management for Postgresql
Tangle
a JavaScript library for reactive documents
Refluxjs
A simple library for uni-directional dataflow application architecture inspired by ReactJS Flux