Home Assistant
The Back Bone to a Successful Smart Home!
Home Assistant is an open source home automation system that puts local control and privacy first. Powered by a worldwide community of tinkerers and DIY enthusiasts. Perfect to run on a Raspberry Pi or a local server. A free open-source home automation software designed to be the central control system in a smart home.
It has a very wide range of device support. As of May 2020 it features support for over 1500+ plug-ins or add-ons with device integrations. These devices, systems and services are available as “integration components”. Actions controlling smart lighting, HVAC, entertainment systems, and appliances, can trigger a variety of ways. The Home Assistant web-based user-interface (Dashboard) used for control.
As of Aug 2020, it has over 2000 developers who have contributed to its core. The project has free and open source companion apps for both Android and iOS.
If you want to get detailed impression on the look and feel, you should check out the online demo.