install4j comes in two editions, the Professional Edition and the Enterprise Edition. Please see the feature list to get a comprehensive summary of the capabilities of install4j Enterprise Edition. The Professional Edition of install4j does not include the following features:

• Services
  Only GUI and command line launchers are supported in the Professional Edition.
• Customization of the GUI installer
  Background images in the installer and the size of the installer cannot be customized in the Professional Edition
• Custom screens
  It is not possible to add custom screens to the installer Professional Edition. However, custom actions are supported.