Chat for Zikula application framework. This module integrates chat rooms in various places you may need.
Current version (2.1.0), https://github.com/kerphi/phpfreechat. Still lack of many features, but they are under development. Simple design. Load faster. File system (no database needed). AJAX, JQuery. Integrations with iframes or embedded with script.
http://sourceforge.net/projects/phpfreechat/. Many features, but will be depreciated in future. File system (no database needed). AJAX, Prototype. Integrated with iframes. Users are integrated.
Current version (0.8.6), http://frug.github.com/AJAX-Chat/, https://github.com/Frug/AJAX-Chat. Full of features. MySql database tables. AJAX. Integrated with iframes. Zikula users are integrated.
As ordinary Zikula module: upload to modules directory, go to Admin panel, Extensions, Install the module.
Contributions, either pull requests or reporting issues, are welcome.
To help support and develop this module in the future, donations are more then welcome. You can make a donation here.