php121 writes:  

Version 1.5 of this popular MSN-like instant messenger is now available to supporters of PHP121. This now means that the previous release is now publicly available from the downloads page. Download and Screenshots New features include: beep on new message, bring chat window to front on new message, timestamps, message window only updates when there is activity to show (saves bandwidth), users can now block other users, admins can ban users, users can select their timezone, PHP121 now supports language files and includes several languages already, and more.PHP121 Web Instant Messenger (PHP121) a free PHP and MySQL based Instant Messenger for your website. No need for Flash or Java. PHP121 will work in any browser that supports JavaScript and allows popups (for new instant message windows). Includes emoticon support, PHPNuke integration mode, integration into existing websites, Enable/disable own account management functions (or use existing website functions), beep on new message, bring chat window to front on new message, and more.