“The local-first rebellion”: How Home Assistant became the most important project in your house

Home Assistant has become one of GitHub's fastest-growing open source projects, now running in over 2 million households with 21,000 contributors. The platform enables local-first home automation by connecting devices from 3,000+ brands without cloud dependency, running on hardware as small as a Raspberry Pi. Its architecture treats the home as a data center, using an event-driven runtime that normalizes disparate device APIs into a unified abstraction layer. The project moved to the Open Home Foundation to prevent acquisition and maintain local control. Contributors write integrations for devices they own, creating a unique quality model where developers test in production environments. The platform includes Assist, a modular voice assistant that uses deterministic commands first and optional AI as fallback, all running locally to preserve privacy.