Metrics Graphics
A library optimized for concise, principled data graphics and layouts.
Balloon.css
Simple tooltips made of pure CSS
Jquery Timeago
Timeago is a jQuery plugin that makes it easy to support automatically updating fuzzy timestamps (e.g. "4 minutes ago").
Flex Slider
An awesome, fully responsive jQuery slider plugin
Kendo Ui Core
Kendo UI Core
Prosemirror
The ProseMirror WYSIWYM editor
Tonal
A functional music theory library for Javascript
Datamaps
Maps for interactive data visualizations in Javascript
Odometer
Smoothly transitions numbers with ease. #hubspot-open-source
jQuery.nicescroll
nicescroll plugin for jquery - scrollbars like iphone/ipad
Colorbox
A light-weight, customizable lightbox plugin for jQuery
Holder
Holder renders image placeholders entirely on the client side.
Zip.js
JavaScript library to zip and unzip files
Ractive
Next-generation DOM manipulation
Intercooler Js
Making AJAX as easy as anchor tags
Graphql Editor
GraphQL Visual Node Editor
Derby
MVC framework making it easy to write realtime, collaborative applications that run in both Node.js and browsers