This paper treats a 3D graphics software development system called IntelligentBox and its web version called WebIB. Originally, IntelligentBox was implemented as a development system for desktop 3D graphics applications. It provides various 3D software components called boxes each of which has a unique functionality and a 3D visible shape. IntelligentBox also provides a dynamic data linkage mechanism called slot connection that allows users to develop interactive 3D graphics applications only by combining already existing boxes through direct manipulations on a computer screen. Ten years ago, the author extended IntelligentBox system to make possible the development of web-based 3D graphics applications. This extended version of IntelligentBox is called WebIB. Furthermore, this time, the author extended WebIB to make possible the development of web-based VR (Virtual Reality) applications. This version of IntelligentBox called WebIBVR. In this paper, the author explains several new functionalities of WebIBVR and introduces use cases of web-based VR applications.