easyComment is a PHP commenting system. easyComment gives you everything you could want in a comment system. Multi-level commenting, comment voting, guest comments and much more features. It also has a full admin area to easily manage comments, reports and other options. It offers a complete user management system for easyComment. Users can register/login and manage their comments.

Demo: https://codecanyon.net/item/easycomment-php-comment-script/12727003