MapChat - Simple location-based chat web app
Home - Securely control all your HomeKit accessories from your favorite iOS device.
Reality Editor - MIT's new app lets you program any object
ioBroker - flexible and modular application for the IoT and Smarthome
Thington - Get the most from your smart devices
Nim Home Assistant (NimHA) - Nim Home Assistant is an open-source home automation platform running on Nim.