Open-source Adafruit IO alternatives

Home Assistant is open-source home automation software built around local control and privacy. It runs on hardware you own, such as a Raspberry Pi or a small home server, and brings smart lights, sensors, switches, thermostats and other devices together in one place. The core is written in Python and released under the Apache-2.0 license.

The documentation is organized around automations and dashboards, voice control, grouping devices by area, tracking energy use and templating, with configuration through the interface or YAML files. The project lists more than 1,500 integrations, and it can be controlled through assistants such as Alexa and Google Assistant. Companion hardware, including Home Assistant Green and the Voice Preview Edition, makes first-time setup simpler.

Home Assistant is a project of the Open Home Foundation, a non-profit that states the project cannot be sold or acquired. It suits tinkerers and DIY enthusiasts who want a home automation hub that does not depend on a single vendor's cloud, as well as people who want to unify devices from many brands under one dashboard.

DGIoT is an open-source industrial Internet of Things platform. It collects data from machines and sensors using industrial protocols such as Modbus, OPC UA and MQTT, with the project advertising support for more than 300 protocols, and it is aimed at factories, energy sites and system integrators building monitoring and control applications.

The README describes an aggregation engine built on Erlang/OTP in which every device gets its own process acting as a shadow, with an ontology layer that covers data, logic and action, and security with roles and access control. It stores time series data in TDengine, and topics reference digital twins, edge computing, SCADA and low-code configuration. Documentation includes architecture diagrams, storage design and station simulation.

DGIoT is licensed under Apache-2.0 and is deployed on your own servers, with a vendor website in Chinese. It suits industrial IoT teams who want an open platform for device connectivity, rules and visualization.

Mycodo is an environmental monitoring and regulation system written in Python. Its topics point to use on a Raspberry Pi with sensors, relays and PID control, so that conditions such as temperature or humidity can be measured, logged and kept near a target.

The project is tagged for cultivation use cases including plants, hydroponics and mushroom growing, and it provides graphs, timers and time-series measurements. It is released under GPL-3.0. Little documentation was available to summarize here, so details of supported hardware and setup are best checked in the project's repository.