JavaScript
Python
Java
PHP
Rust
Haskell
Typescript
Elixir
Domoticz
ioBroker
Home-Assistant.io
openHAB
Home
Google Home
IP-Symcon
HomeGenie
JavaScript
DomoticzPython - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.
ioBroker - flexible and modular application for the IoT and Smarthome
Java - A concurrent, class-based, object-oriented, language specifically designed to have as few implementation dependencies as possible
Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
PHP - A popular general-purpose scripting language that is especially suited to web development
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation