SocketXP - Raspberry Pi and IoT device remote access, monitoring, control and management at scale.
Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
Azure IoT Hub - Manage billions of IoT devices with Azure IoT Hub, a cloud platform that lets you easily connect, monitor, provision, and configure IoT devices.
ioBroker - flexible and modular application for the IoT and Smarthome
iothook - Restful data platform for the Internet of Things. IoThook Features
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation