The Senate Address Geo-coding Engine (SAGE) is a web application used to provide geo-mapping information to users. It includes address verification/correction, geo-coding of addresses, and district assignment using either Board of Election street files or TIGER/Line shapefiles. Most of SAGE's functionality is handled by third-party libraries and services, such as the USPS Address Information System, as well as geocoders from Yahoo, Google, MapQuest, and Bing.

SAGE is developed primarily by the Application Development unit at the New York State Senate.