Meltdown BBS is a free, web-based Bulletin Board System written in PHP with a MySQL backend. Meltdown BBS allows message and file exchange and advanced control over users' access. It is designed to be compatible with Fidonet-technology networks.
phpFidoNode is a project intended to implement the basic Fidonet software functionality by using PHP language. Now, the main part of the project is phfito - PHP Fidonet Tosser written by Alex Kocharin.