Foursquare has launched SQLRooms, an open-source framework for building single-node data applications using DuckDB, enabling enterprise-grade analytics to run directly in browsers without backend infrastructure. This innovative framework leverages recent advancements in single-node computing, browser capabilities, and local AI deployment, allowing users to process large datasets efficiently while maintaining data privacy and minimizing cloud costs. SQLRooms includes essential tools for state management, data visualization, and an AI-powered analytics assistant, transforming laptops and browsers into self-sufficient data processing environments.