Online customer support system, hosted based and ready to use. No database or space necessary at your host.
LiveAdmin is an online customer support chat system, hosted based and ready to use. All you have to do is to signup at http://www.liveadmin.net and get a site key, then use it in configuration section of module.
In the Appearance -> Widgets in WordPress 2.8 or newer you'll find the LiveAdmin widget. After adding it to your sidebar you can enter a title for the Widget, some descriptive text that will appear above the button.
Insert the button in your pages or posts with this shortcode