ftp plugin?

just created company wordpress site. Using shortcode exec php, created a login script on one of the wordpress pages for employee login to employee-only site.

would like to create another login for clients to access files. We currently have a pay-per month ftp site, that I hate and would like to move this in-house.

kill 2 birds with 1 stone…direct clients to our website and enable them to download files we post for them.

any plugins/ideas on how to do this?

create external ftp server, the have a wordpress plugin to access/display it’s contents?

thanks!