phplist: Not your everyday Mailman

This is one piece of GPL-licensed software that should give a few proprietary closed source vendors a run for their money.
Sean Michael Kerner, NewsForge

System Requirements

phplist is developed and tested with the following server software:

phplist also runs on PHP 5, MySQL 4.1 & 5.

The developers use the following setup:

phplist also runs on windows, with Apache, PHP and MySQL. We recomend XAMPP server to run phplist on windows for testing and development.

Users have also reported that phplist can be adapted for Microsoft IIS web server. This is not currently supported, but you can find more information in the documentation or by searching the forums.