List of Top Free Open Source & Self Hosted Application for Internet of Things (IoT)

Internet of Things describes physical objects with sensors, processing ability, software, and other technologies that connect and exchange data with other devices over the Internet.

DeviceHive – Open Source IoT Platform with a wide range of integration options. Apache-2.0 Java
Domoticz – Home Automation System that lets you monitor and configure various devices like: Lights, Switches, various sensors/meters like Temperature, Rain, Wind, UV, Electra, Gas, Water and much more. GPL-3.0 C/C++
EMQX – An ultra-scalable open-source MQTT broker. Connect 100M+ IoT devices in one single cluster, move and process real-time IoT data with 1M msg/s throughput at 1ms latency. Apache-2.0 Docker/Erlang
FHEM – FHEM is used to automate common tasks in the household like switching lamps and heating. It can also be used to log events like temperature or power consumption. You can control it via web or smartphone frontends, telnet or TCP/IP directly. GPL-3.0 Perl
Gladys – Gladys is a privacy-first, open-source home assistant. Apache-2.0 Nodejs
Home Assistant – Open-source home automation platform. Apache-2.0 Python
ioBroker – Integration platform for the Internet of Things, focused on building automation, smart metering, ambient assisted living, process automation, visualization and data logging. MIT Nodejs
Node RED – Browser-based flow editor that helps you wiring hardware devices, APIs and online services to create IoT solutions. Apache-2.0 Nodejs
openHAB – Vendor and technology agnostic open source software for home automation. EPL-2.0 Java
OpenRemote – Open-Source IoT Platform – IoT Asset management, Flow Rules and WHEN-THEN rules, Data visualization, Edge Gateway. AGPL-3.0 Java
SIP Irrigation Control – Open source software for sprinkler/irrigation control. GPL-3.0 Python
Thingsboard – Open-source IoT Platform – Device management, data collection, processing and visualization. Apache-2.0 Java
WebThings Gateway – WebThings is an open source implementation of the Web of Things, including the WebThings Gateway and the WebThings Framework. MPL-2.0 Nodejs