Mycroft.AI - Mycroft is the world’s first open source assistant.
My Devices - Drag and drop IoT project builder for Raspberry Pi
Google Assistant - Get things done with Google Assistant
ioBroker - flexible and modular application for the IoT and Smarthome
Lyrebird - Copy the voice of anyone, using a voice imitation algorithm
Nim Home Assistant (NimHA) - Nim Home Assistant is an open-source home automation platform running on Nim.