La gente de IBM nos manda un artículo interesante de como implementar alertas utilizando Ajax Chat:
Wish you could have a dedicated, open source Web chat pop up in response to a system event that lets you know what’s happening in real time. Your search is over with Ajax Chat, an application that’s implemented in JavaScript, PHP and MySQL. You can get that function and much more with Ajax chat, a pop up chat perfect for system adminstrators. Learn how to change configurations, and add as many alert channels as you want. Put this in your Admin toolbox, and become aware of system problems faster.