Velop - Whole-home mesh Wi-Fi by Linksys
Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
MIWIFI by Xiaomi - Wifi router beta with a twist: you build it yourself
ioBroker - flexible and modular application for the IoT and Smarthome
MikroTik RouterOS - The main product of MikroTik is a Linux-based operating system known as MikroTik RouterOS.
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation