Open Source IoT Platform
Devices deployed to the field outlive the companies that ship their platforms - sensors run for a decade, and a cloud that goes dark or changes its pricing strands hardware you can't easily recall. That horizon is why the open source platforms below matter: they let telemetry land in a database you own and devices talk to an endpoint you host, so the fleet keeps reporting on protocols you control long after any single vendor's roadmap has moved on.
Home Assistant
Open source home automation with local control and privacy first
ThingsBoard
IoT platform that connects devices, collects telemetry, processes it with rule chains, and visualizes it on dashboards
Domoticz
Free open source home automation system for monitoring and controlling lights, switches, and sensors
Gladys Assistant
Privacy-first open-source smart home assistant for local automation and device control
Magistrala
IoT platform framework with multi-protocol messaging, device management, and fine-grained access control
Kuzzle
Self-hostable backend for IoT networks and apps with real-time pub/sub, stored data, and built-in search
EdgeX Foundry
Vendor-neutral edge framework that connects IoT devices and sensors to applications through interoperable microservices
ioBroker
Open source IoT platform for home automation, data logging, and system integration on premise
openHAB
Vendor- and technology-agnostic open source home automation software