The 1kb client side MV* library
Full-sized drag & drop event calendar (jQuery plugin)
Dynamic, browser-based visualization library
A fast and fully-featured autocomplete library
Navigation scripting & testing utility for PhantomJS and SlimerJS
Prototype iPhone apps with simple HTML, CSS, and JS components.
Parallax Engine that reacts to the orientation of a smart device
A D3-based reusable chart library
motion graphics library for the web
A collection of CSS3 powered hover effects to be applied to links, buttons, logos, SVG, featured images and so on. Easily apply to your own elements, modify or just use for inspiration. Available in CSS, Sass, and LESS.
Date/time picker widget based on twitter bootstrap
A positioning engine to make overlays, tooltips and dropdowns better #hubspot-open-source