Communicating complex scientific information is a critical activity in responding to today’s COVID-19 pandemic. Many sources exist now to present trustworthy and timely information in ways that decisionmakers and the general public can understand. One way to communicate scientific information is to show the technical data in visual forms that users can easily relate to and interact with. LLNL’s VisIT software has long been a leading tool for enabling scientists to visually show complicated scientific data. VisIt is an open source, interactive, scalable, visualization, animation and analysis tool. From Unix, Windows or Mac workstations, users can interactively visualize and analyze data ranging in scale from small (<101 core) desktop-sized projects to large (>105 core) leadership-class computing facility simulation campaigns. Users can quickly generate visualizations, animate them through time, manipulate them with a variety of operators and mathematical expressions, and save the resulting images and animations for presentations. VisIt contains a rich set of visualization features to enable users to view a wide variety of data including scalar and vector fields defined on two- and three-dimensional (2D and 3D) structured, adaptive and unstructured meshes. Owing to its customizable plugin design, VisIt is capable of visualizing data from over 120 different scientific data formats

VisIT is distributed under a BSD 3-Clause License and is available at (LLNL-CODE-793424)