Mycroft.AI - Mycroft is the world’s first open source assistant.
My Devices - Drag and drop IoT project builder for Raspberry Pi
Rhasspy - Rhasspy transforms voice commands into JSON events that can trigger actions in home automation software.
ioBroker - flexible and modular application for the IoT and Smarthome
Google Assistant - Get things done with Google Assistant
Nim Home Assistant (NimHA) - Nim Home Assistant is an open-source home automation platform running on Nim.