Web technology has not been considered to be suitable for the basis of real-time system due to the lack of real-time communication capabilities. HTTP, for example, does not have a function that pushes out data from a web server to web browsers. We developed a QuickBoard web-server system that allows users to deliver computer-screen images of any application to more than 100 web browsers in real-time. We also developed ICMHP, a method integrating interframe compression mechanism with web-server-side technology, from the viewpoint of reducing network traffic on web-based real-time presentation system.