al3x.de

User/File Management, downloadable files are session bound and .htaccess protected against hot-linking. 
Users are not wp users. Files are displayed in a jQuery powered filetree. 
Now with public download area, public downloads are not session bound. 
You can even tell wp which subdirectory of the public folder should be used as root-directory.

al3x_file_manager

A neat User/File Management with a jQuery frontend to display customizable directory/file tree. Now with public download area.

Julio Potier

You can now add passwords as many as you need on every protected page.
Why? Because you can protect page and give your client a personnal password, not just a random pasword or everyone.
Option: If you are logged as admin or the page’s author, you won’t need to enter password.
Option: If you set a list of child pages, just change any password (parent page or any child) and all the password for the hierarchy will be updated!

Multiple Passwords for Protected Pages

Add more than 1 password to your protected pages, also administrators and page's authors can view the protected pages without password.

al3x_file_manager vs Multiple Passwords for Protected Pages