X7 Chat has more features then any other PHP chat script. It does not click when it updates, has no flicker and almost no delay. It support IRC style commands, Full admin control, message formatting (colors, styles etc.), smilies, and unlimited users, rooms and messages and a lot more. It also has integration support for popular software like PhpBB and PhpNuke as well as many more.

Webfroot Shoutbox allows users to post little blurbs on your website like a small guestbook/chat box/tag board. It is based on what used to be aftertalk.com. Inline or use an IFRAME. Choose either a CSV text file or mySQL database. Simple to set up, and easy to customize colour and layout using CSS, with emoticon parsing option. 11 emoticon themes to choose from, language pack support, admin pages to edit/delete and configure. A working administratable demo and list of other shoutbox sites available at the website.

WebChat is a PHP/JavaScript-based chat application that uses a MySQL database on backend. Features include: multiple rooms, no browser flicker between message translation, web based room management, database backend, private messages, emotions and text formating, and multiple language support.

Fast, convenient, easily customized PHP stream chat. Features: Themes support, configurable rooms, private messages, ignoring, user-status, mini-mail system, inline images, graphical statistic, user-info, diffrenet admin-rights, protected registration, club-mode, language-packs, etc. At the moment files-, SysV SharedMemory- and MySQL-based engines are available. The chat has been tested on real servers with up to 450 simultaneous users (with C++ chat-daemon)

Very simple one page AJAX CHAT using PHP, no database needed. The main concern is about SIMPLICITY and server overload. It is a really FAST chat, almost all done in client side using javascript.

Now visitators can chat in your website with a free php chat script. It uses a flat text document, so it doesen`t need a mysql database. You can use this script very easy, installing is easy and integration in the website takes no more than 2 minutes.

This is a simple php based shoutbox. It requires mysql and php.

ShoutPro is an easy to use, fully customizable shoutbox script. It is completely free and doesn't require a database. ShoutPro supports smilies and formatting code and also features a profanity filter and the ability to password protect certain names. You can easily add new smilies and edit the formatting code and filter. Installation is very simple and only requires a basic knowledge of HTML. BETA 4 now includes IP banning and the option for users to register their names so that a password is required to use them.

An advanced tag board script, thats easy to install, with email and website options, cool smileys, ip logging and equipped with a fully functional password protected back-end admin area.

PHPOpenChat is a web based chat software written in PHP. PHPOpenChat is database independent, based on the MVC architecture, and object oriented. This frees up the creators to concentrate on a great customizable user interface and high quality administration functionality. It provides mail, moderating, watch-server, private channels, ignore list, text filters, inline user images and a easy to handle admin tool.