Particles.js
A lightweight JavaScript library for creating particles
Air Datepicker
Cool jQuery datepicker
Starability
Accessible rating forms with cute animations on top.
Eqcss
EQCSS is a plugin that introduces Element Queries, Scoped CSS, a Parent selector, and responsive JavaScript to all browsers IE8 and up
Expounder
A library for explaining things in HTML.
Timelined
A customizable CSS-only vertical timeline
Sketchpad
A simple sketchpad library
Messenger
Growl-style alerts and messages for your app. #hubspot-open-source
Tether
A positioning engine to make overlays, tooltips and dropdowns better #hubspot-open-source
Galen
Layout and functional testing framework for websites
Mjml
MJML: the only framework that makes responsive-email easy
Materialize
Materialize, a CSS Framework based on Material Design
Fast Memoize.js
:rabbit: Fastest possible memoization library
Blend4 Web
Blend4Web is a tool for interactive 3D visualization on the Internet
jQuery.lazy
A lightweight, fast, feature-rich, powerful and highly configurable delayed content, image and background lazy loading plugin for jQuery & Zepto.
Intense Images
A simple library to view large images up close using simple mouse interaction, and the full screen.
Logerr
Playing with console errors, experimental project.