WEAVE (Web-based Analysis and Visualization Environment) is a web-based visualization platform offered by the Institute for Visualization and Perception Research at the University of Massachusetts Lowell. It is designed to visualize any data for any purpose, and to accommodate novice and advanced users alike. It includes the ability to integrate, disseminate and visualize data at nested levels of geography. WEAVE is currently in beta. Both a web-based demo and a download version are available.