Snap.svg
The JavaScript library for modern SVG graphics.
Editor
Next-gen, highly customizable content editor for the browser - based on React and Redux. WYSIWYG on steroids.
Easel JS
The Easel Javascript library provides a full, hierarchical display list, a core interaction model, and helper classes to make working with the HTML5 Canvas element much easier.
Respond
A fast & lightweight polyfill for min/max-width CSS3 Media Queries (for IE 6-8, and more)
Casper JS
Navigation scripting & testing utility for PhantomJS and SlimerJS
List
Do you want a 3 KB (gzipped&minified) cross-browser native JavaScript that makes your plain HTML lists and tables super flexible, searchable, sortable and filterable? Yeah! Do you also want the possibility to add, edit and remove items by dead simple templating? Hell yeah!
Math Jax
Beautiful math in all browsers
Headroom.js
Give your pages some headroom. Hide your header until you need it
Noty
noty - jquery notification plugin
Glide
A dependency-free JavaScript ES6 slider and carousel. It’s lightweight, flexible and fast. Designed to slide. No less, no more
Jstree
jquery tree plugin
Choo
:steam_locomotive::train: - sturdy 4kb frontend framework
Tether
A positioning engine to make overlays, tooltips and dropdowns better #hubspot-open-source
Numeral
A javascript library for formatting and manipulating numbers.
iScroll
Smooth scrolling for the web
Onsen Ui
Custom Elements-Based HTML5 UI Framework for Building Your Mobile Front End