Web Authentication  

Nifty Nerds Web Authentication - Authentication for your website that will make it easy to set up authentication and user tracking.

Hosting Requirements: Linux; PHP
Price: Free

   Password Protection  

Password Protection is an easy-to-use access restriction script written in PHP, which uses a MySQL backend to control username and password combinations, as well as administrators. The great thing about Password Protection is that, once installed and configured, there is only one line of code to add to the top of each file you wish to protect.

Database: MySQL
Price: Free

   PAccounts  

PAccounts is a web account password manager. It dynamically examines the contents of webpages to extract the form fields and reproduces hidden forms and a customizable webpage that allows you to automatically login to the website with a single click.

Price: Free (GPL)

   Sessionara  

Sessionara is a handy php class to manage sessions and realize member areas. In a developer's life, the job to make admin areas is a common task, all this has to be realized fast. Sessionara is a framework for this, you can save/get variables in it, useable across an entire project. It is easy to use and saves you alot of time. It uses MySQL to store the data.

Hosting Requirements: Unix, Win NT
Database: MySQL
Price: Free (GPL)

   p_protect  

_protect is a pretty straight-forward protection script written in PHP. It allows you to protect any page you decide within a directory. When somebody enters the wrong username or password, you automatically get a notification email.

Price: Free

   Radius Authentication  

This will show you how to use Radius authentication in PHP scripts.

Hosting Requirements: Unix; PHP 4.1.1+
Price: Free

   vSignup  

vSignup is a member registration script which utilizes vAuthenticate for its security handling. This handy script features email verification, sending confirmation email message, restricting email domains that are allowed for membership, and much more.

Hosting Requirements: Unix, Windows
Price: Free

   PHPIMP  

PHPIMP is an educational (ie not for production) function that validates a username/password combo against the server and returns true or false. Basically it is a fun intro to php and sockets...

Price: Free

   PHP Basic Authenticator  

This PHP class allows you to password protect a set of web pages using Basic Authentication. It requires PHP 4.0 or later. It is customisable and has the following features: Easily extensible to allow authentication against any data source. Customisable realm name. Customisable error message.

Hosting Requirements: Unix, Windows; PHP4
Price: Free

   PHPaccess  

The htaccess class manages the htaccess functions of Apache Webservers. Without knowing much knowledge of Apache, users can be added or deleted, groups can be created anddeleted, .htaccess files can be created with this class etc.

Price: Free