Machine-implemented methods for providing information to a graphical user interface for displaying web site traffic information are provided. In one aspect, a method includes acquiring low latency web site traffic data for a web page, and providing the acquired low latency web site traffic data to a graphical user interface for display. The acquired low latency web site traffic data is configured to be displayed concurrently with a display of at least a portion of the web page. Systems, graphical user interfaces, and machine-readable media are also provided.