For new members of a work community, it can be difficult to learn the social landscape of the organization. Where are the casual meeting areas? When are people likely to be socially active? Are there spontaneous gatherings happening in parts of the workspace? OPENSPACE enables awareness of presence and activity by combining a grid of motion sensors with data logging, pattern analysis, and a variety of visualization techniques. With OPENSPACE, we aim to increase the social awareness of the larger spaces in which we work.