Here’s a cool upload script which gives you a progress bar while your files are uploading. It’s a collection of PHP and Perl scripts. The Perl script overcomes PHP’s limitation of querying the status of the temporary upload file while it’s in transit.

Uber-Uploader is a group of programs written in Perl, PHP and Javascript. It is intended to present a graphical representation of the status of a web based file upload in the form of a progress bar.

Link: Uber-Uploader - A free web based file uploader that displays a progress bar