Keep multiple browsers & devices in sync when building websites. http://browsersync.io
It's a presentation framework based on the power of CSS3 transforms and transitions in modern browsers and inspired by the idea behind prezi.com.
Multi-Dimensional charting built to work natively with crossfilter rendered with d3.js
Full-sized drag & drop event calendar (jQuery plugin)
A JS client-side library for creating graphic and interactive experiences, based on the core principles of Processing. http://twitter.com/p5xjs —
Observable data. Reactive functions. Simple code.
Light and responsive lightbox plugin with focus on performance.
Offline storage, improved. Wraps IndexedDB, WebSQL, or localStorage using a simple but powerful API.
A D3-based reusable chart library
Micro check library
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.
A positioning engine to make overlays, tooltips and dropdowns better #hubspot-open-source