Version 2 of Polychart.js
Simple HTML5 Charts using the <canvas> tag
File Upload widget with multiple file selection, drag&drop support, progress bars and preview images for jQuery. Supports cross-domain, chunked and resumable file uploads and client-side image resizing. Works with any server-side platform (PHP, Python, Ruby on Rails, Java, Node.js, Go etc.) that supports standard HTML form file uploads.
Simple pub/sub messaging for the web
An IndexedDB Plugin for Jquery.
Handsontable is a minimalistic approach to Excel-like table editor in HTML & jQuery
Peer-to-peer data in the browser