What's a good php/cgi/asp/etc upload script?

I'm looking for a good upload script for my website, but the internet is saturated with tons of them, both good and bad. Can someone please direct me to a decent one. I would preferably not like a link to one of those script sites that host a a bunch of scripts because I've been there and there are a lot of script, but I don't know which are good or bad, and I don't have much time to test them all out.

Please suggest. Thanks in advance!

- something free preferably
- a progress bar would be nice, but not necessary
- ability to add comments to uploaded files, but this is also not necessary.
- must be secure!
- be able to handle large files

What's the server environment? Different tools available depending on whether you can run .NET, Java or just PHP or something else.

it's a Linux server. I can run php, cgi/perl, mysql, java.

I'd recommend seeing if someone out there has a java applet that can talk back to something like sftp/ssh server. How much control over the firewall do you have? Does this need to be on port 80 or can it use another port like 22?

well it would be better to be on port 80, because some large companies block port 21 (default ftp port) and/or non-standard ports. If it goes through port 80, it will be more universal. I am on a shared hosting plan, so I don't have very much control, and the ftp server is not an sftp or ssl ftp.

I found a nice little cgi script called XUpload. It works beautifully. There is no file size limit (aside from the limit of space I have on my server), and it has a nice progress bar.

My main goal is to have some sort of client management system (not content management system). Something that will allow my clients to log into a control panel-type interface and give them the option to upload files pertaining to specific jobs. I know there are systems out there, I just don't know where to find them. I am willing to create the script from the ground up, although I don't have a lot of spare time on my hands and need to get something up ASAP for my clients. I don't mind paying either if the system is worth the price.