Content Aware Image Resizing - Javascript
http://labs.pimsworld.org/wp-content/uploads/2009/04/demo-content-aware-image-re...
SWFUpload
http://www.swfupload.org/
FancyUpload - Flash and AJAX-based Upload System
http://digitarald.de/project/fancyupload/2-0/showcase/photoqueue-fixed/
Pure PHP Upload Progress Bar
http://pecl.php.net/package/uploadprogress
PHP Uploader v6
http://www.celerondude.com/php-uploader-v6