ApPHP AJAX File Uploader is an easy to use, high-performance PHP AJAX Multiple File Upload Control which allows you to upload files to web server without refreshing the page.
XUpload – AJAX upload progress bar indicator for web based file uploads written on Perl. XUpload lets you to accept file uploads on your website and shows upload progress bar which is showing upload progress bar. Will work on any hosting.
Run your own file upload site like Rapidshare or MegaUpload with XFileSharing script. XFileSharing script is an advanced solution for creating free file hosting websites.