Domoticz is a lightweight automation system that lets you monitor and configure miscellaneous devices, including lights, switches, various sensors/meters like temperature, rainfall, wind, ultraviolet (UV) radiation, electricity usage/production, gas consumption, water consumption and much more. Notifications/alerts can be sent to any mobile device or viewed via a modular interface. 

Domoticz leverages the XMPP protocol with extensions for IoT (Internet of Things). To manage to get different companies to communicate to each other devices XMPP-IoT is a new initiative from XMPP.org to make interoperability happen. The xmpp protocol is an IoT ecosystem already today, with it being fully open, supporting different business models and with easy integration of devices between the involved companies...