PHP: User Authentication

Free user authentication and easy to use security system. Manage and control your members
Price: Free

Access4Site is a powerful website password protection tool. It protects your important files from unauthrized access with the help of .htaccess and .htpasswd files. Key features include powerful membership control, statistics, different adminlevels,...
Price: $24.95

AddLock Membership Management System is a PHP script for secure management of your website users' authentication and membership. It guards your resources against any security violation attempts.
Price: $24.95

admin-Login-Only software lets you easily add password protected pages to your website using a PHP session. Log in once with a username and password, then browse any combination of protected or open pages - then return to a protected page without...
Price: FREE

Program easily creates login area. One link to the registration form and ALADIN will register user, collect user data, send and receive email confirmation. Web based graphical admin interface with visual folders password protection. Total user...
Price: commercial

Script is intended for those who wishes quickly and with the least efforts and expenses to create the protected area (login area, member area) on the site and to provide access to it through a login. This program has arisen on the basis of...
Price: $37

Autentificator is a script for authenticating registered users against your password-protected pages. It features different levels of access and login error management. It includes user administration tools, and installer. The documentation is...
Price: Free (GPL)

AuthClassed is a class, written in PHP, to implement a simple authentification scheme for database-oriented webpages. Using AuthClassed is as simple as putting a single code line at the top of the webpage you would like to protect. AuthClassed...
Price: Free (GPL)

Authlib is an object oriented secure library for session and user management using cookies and MySQL. Features include registration, logging in, editing registration details, changing password, changing email, deleting account, logging out, flushing...
Price: Free (GPL)

This script allows you to include a file on any pages that you would like to be protected and block out IPs to the page. This script now allows you to block out a range of IP addresses using a * or a ?.
Price: $3.00

With this basic signup/login members system you can let people sign up for your site. In order to install it you will have to require a bit of experience with PHP and MySQL but not much. Features: -Signup -Login -Ranking...
Price: Free

This class facilitates the maintenance of htpasswd files, used to do Basic Authentication on a web server. This class assumes PHP v3.0 or better and Apache 1.3.3 or better. The password file is a flat-file with login name and their associated...
Price: Free

Clover Pass e-mail validator checks that the users e-mail address is actually correct and that the user is not pretending to be someone else. This program generates a 4 digit identification number from the users email address. The number is then...
Price: Freeware

Protect multiple pages with this script. You can have as many user names and passwords as you like and you can edit the login page, log out page and the page for invalid login names/passwords.
Price: Freeware

Cute Verify is a web application that will require verification before allowing users to view the protected files. Cute Verify works on a folder level. Access is granted only to registered users with a correct user id, password and before expiration...
Price: $65

A simple login form. Enter username and password. If correct you enter in, otherwise not. Tested on Windows, Apache 1.3.22, PHP 4.2.1.
Price: Freeware

This script is a simple login form for multiple users. Tested on Windows, Apache 1.3.22, PHP 4.2.1.
Price: Free

This script will deny web page access to all referrers except one pre-designated URL. The visitor attempting unauthorised access can be redirected to another page, returned to the referring page or the browser window can be closed according to...
Price: Freeware

DF Black Gate is a script that password protects your webpages. You can assign the users you wish their own username and password to access your pages. No one else will be able to view them. It comes with an administrative interface that allows you...
Price: Free for Personal Use / $

Want to protect your webpages from unauthorized access? Here's a simple solution with an easy to use administrator interface to manage your users. To protect your page, simply copy a piece of code and paste it at the very begining of your page.
Price: Free for personal / $30 c