Chatfuel is free Ajax/Php chat script for your site.
It is lighting fast, highly economical and dead-easy to install. Features - extremely fast: chat runs in shared memory where possible and gracefully degrades to use flat files otherwise - no database required! - highly efficent: conserves CPU power and bandwidth - Ajax based: no plugin required, works in all modern browsers Standard - no install required: upload the file, add one line of javascript to your site, and you're up and running! - XHTML compliant - chat Ready to use straight out of the box yet highly configurable A lightning fast chat solution for sites running on linux economical chat - minimizes traffic load and bandwidth usage Lightning fast Ajax based chat - No download or plugin required. Easy to install - only one line of JavaScript to add chat to your site! How to get going: - upload chatfuel files to your site - include one line of javascript on your site Yep that's right, no install script to run! Chat Runs in shared memory - will take up only 25K of shared memory - No database required (and not recommended either) Chat Works immediately straight out of the box, yet highly configurable Uses shmop if available, otherwise flat file. Required - Php 4.3.x or higher Links are not permament, not in your source, thus not a target for spammers. Run in shared memory How to find out whether you can run it: create a file on your server with this line in it: phpinfo() and run it on your webserver. It will provide you with information about the server (delete the file when done, for security reasons). Compile time options: --enable-sysvsem --enable-sysvshm --enable-shmop Need easy detect script to see whether it can be run with shmop. if not, just degrade to flat file (for example, in /tmp/)