jQuery File Upload is a File Upload widget with multiple file selection, drag&drop support, progress bars and preview images for jQuery. It supports cross-domain, chunked and resumable file uploads and client-side image resizing. It also works with any server-side platform (PHP, Python, Ruby on Rails, Java, Node.js, Go etc.) that supports standard HTML form file uploads.

The jQuery UI widget factory is a requirement for the basic File Upload plugin, but very lightweight without any other dependencies. The User Interface is built with Twitter’s Bootstrap Toolkit. This enables a CSS based, responsive layout and fancy transition effects on modern browsers. The demo also includes the Bootstrap Image Gallery Plugin. Both of these components are optional and not required.

Requirements: jQuery Framework
Demo: http://blueimp.github.com/jQuery-File-Upload/
License: MIT License