Linux is an open source operating system (OS). An operating system is the software that directly manages a system's hardware and resources, like CPU, memory, and storage. The OS sits between applications and hardware and makes the connections between all of your software and the physical resources that do the work.

Lego Star Wars is a Lego theme that incorporates the Star Wars saga and franchise. Originally it was only licensed from 1999 to 2008, but the Lego Group extended the license with Lucasfilm, first until 2011, then until 2016, then again until 2022

Microsoft Windows, also called Windows and Windows OS, computer operating system (OS) developed by Microsoft Corporation to run personal computers (PCs). Featuring the first graphical user interface (GUI) for IBM-compatible PCs, the Windows OS soon dominated the PC market.

Home Assistant is free and open-source home automation software designed to be the central home automation control system for smart home technology. Both the Home Assistant "core" application itself and its software extensions are written in Python. Its main focus is on local control and privacy.

A gadget is a small machine or device which does something useful. You sometimes refer to something as a gadget when you are suggesting that it is complicated and unnecessary.

Zigbee2MQTT converts a Zigbee network (connected to a Zigbee compatible device, like a USB dongle), via a MQTT Broker, into Home Automation

The Ring Alarm Security Kit is a DIY home security system that works on any house or apartment. It comes with a Base Station, Contact Sensor, Motion Detector, Keypad and Range Extender. Ring Alarm is simple enough to install without any tools or professional installation. Simply place the Contact Sensor on any door or window in your home, and you’ll get a mobile notification when it opens.

The Raspberry Pi is a low cost, credit-card sized computer that plugs into a computer monitor or TV, and uses a standard keyboard and mouse. It is a capable little device that enables people of all ages to explore computing, and to learn how to program in languages like Scratch and Python.

Docker is a tool designed to make it easier to create, deploy, and run applications by using containers. Containers allow a developer to package up an application with all of the parts it needs, such as libraries and other dependencies, and deploy it as one package.

ESPHome is a system to control your ESP8266/ESP32 by simple yet powerful configuration files and control them remotely through Home Automation systems.