Tinitell - Wearable mobile phone for kids. GPS enabled.
Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
Toymail Talkies - Toys that connect people
ioBroker - flexible and modular application for the IoT and Smarthome
Fitbit Ace - Fitness fun for kids
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation