Omnistar Mailer  

The Omnistar Mailer is a dynamic contact database and email list manager combined. It will give you the ability to dynamically create forms for obtaining information, create email list campaigns and create customized advanced searches to quickly retrieve your stored information.

Hosting Requirements: Linux, FreeBSD; PHP 4.2+
Database: MySQL
Price: $69.95

   htMailer  

htMailer is a mass email program. It has been designed to be easy to setup, easy to use, and also keep a small foot-print, so when it's running, it doesn't use up all your system's resources. It's written in PHP, and doesn't request a database server. You just need to have PHP installed on your server with shell access allowed so we can run the mailing program. Unlike most other web based mail programs, htMailer doesn't require you to keep your browser open. Just click on the button to run the program, and you can shut down your browser. Come back at any time to see an update. htMailer actually runs a program on the server that sends the mail for you.

Hosting Requirements: Unix/Linux; PHP 4.1+; Shell access; Zend Optimizer
Price: $599.95/ye

   LoadedList  

LoadedList is a top list script programmed in PHP and utilizing a MySQL backend that will drive traffic to your site. Built from scratch with speed in mind, it will allow your site to grow without causing any slow down.

Hosting Requirements: PHP 4.0.6
Database: MySQL
Price: $55

   Email List Duplicate Remover  

Processes email lists with one address per line and removes duplicate addresses from the list so you have a clean list with only unique email addresses.

Hosting Requirements: Unix
Price: Free (GPL)