A WebViewer is an ActiveX component that allows a browser to behave as an E3 Viewer, viewing and controlling E3 applications via Internet. This way, users can view and interact with a plant floor process using Internet Explorer, which can be installed on any computer on the network with access to an E3 Server.

After installed, a WebViewer works exactly as an E3 Viewer, downloading the application (Screens, bitmaps, etc.) to the local machine. All E3 Viewer functionality (E3Chart, E3Alarm, etc.) is supported on a WebViewer.