Fancyupload
Flash, Javascript June 23rd, 2007 
Swf meets Ajax for beautiful uploads. The release of the long awaited MooTools upload widget thats allows queued multiple-file upload including progress bars.
Compatibility
Fully compatible with all A-Grade Browsers and Flash 8+ (Internet Explorer 6+, Opera 9, Firefox 1.5+ and Safari 2+)
Features
- Select and upload multiple files
- Filter files by type in the select dialog
- Optional Events to add your own behaviour
- Show and filter useful file information before the upload starts
- Limit uploads by file count and/or file size
- Platform and server independent, just needs Flash 8+ (> 95% penetration)
- Unobtrusive, since the element is replaced after the swf loaded successfully
- Cancel running uploads, add files during upload
- Everything is optional, documented and easy editable