The U.S. Census Bureau's Demographic Analysis and Population Projection System (DAPPS) is a comprehensive freely available software designed to support detailed demographic analysis and population projections. Featuring a modern interface, streamlined workflows, and a range of advanced analytical methods, DAPPS offers users access to over 20 different techniques for analyzing population dynamics, such as age and sex distribution, fertility, mortality, and migration. With seamless data integration from common spreadsheet applications and including new subnational projection methods and enhanced visualization options, DAPPS is an indispensable tool for demographers and data analysts alike.