Modern science is increasingly data-driven and collaborative in nature, producing petabytes of data that can be shared by tens to thousands of scientists all over the world. NetSage is a project to develop a unified open, privacy-aware network measurement, and visualization service to better understand network usage in support of these large scale applications. New capabilities to measure and analyze the utilization of international wide-area networks are essential to ensure end-users are able to take full advantage of such infrastructure. NetSage was developed to support the US National Science Foundation international networking program, but can be deployed in other settings. This talk will offer an overview of the project and emphasize recent developments within the project.