The Augmented Reality Videoconferencing System is a novel remote collaboration tool combining a desktop-based AR system and a videoconferencing module. The novelty of our system is the combination of these tools i.e. superimposing AR applications on live video background displaying the conference parties’ real environment, thus merging the advantages of videoconferencing (natural face-to-face communication) and AR (interaction with distributed virtual objects using tangible physical artifacts). We demonstrate the system’s collaborative features with a volume rendering application that allows users to display and examine volumetric data simultaneously and to highlight or explore slices of the volume by manipulating an optical marker as a cutting plane interaction device.