By communicating directly with CPanel LucidStorm's CP Mail Plus allows you to let users signup for an email address from your site. Provided your host runs cpanel you can use this script to start a hotmail-like service. Features include Paypal payment integration, custom control of signup fields, free trial periods, targeted email facilities, advanced user searches, and also support for multiple domains has now been included. Free installation service or assistance can be provided if required.
100janCMS Articles Control is a complete PHP/mySQL based articles administration application, including articles management, commenting and rating articles by visitors. Features include an advanced back-end articles management system, displaying articles by unique marker, multiple language support (HTML encoding), advanced WYSIWYG editor to accept HTML content with images upload, articles visits count (on full text page), rating articles by visitors, commenting articles by visitors, and a user registration system.