Securitron
Securitron allows you to password protect directories and restrict who can view your files and information. Users can sign up for access and the admin and users will be e-mailed their info. Can use the script-generated forms or HTML 'templates' to match your site. This is not a replacement for using .htaccess. which is still best because it provides server level protection. But this script is for those who do not know how to set .htaccess or want more control over access.