Conrad Connect - Service for managing smart home devices
Geckoboard - Get to know Geckoboard: Instant access to your most important metrics displayed on a real-time dashboard.
FHEM - FHEM (TM) is a GPL'd perl server for house automation.
freeboard - An open source real-time dashboard builder for IOT and other web mashups.
Homebridge.io - Homebridge is a lightweight NodeJS server you can run on your network that emulates the iOS HomeKit...
Cyclotron - Cyclotron is a platform for creating and hosting dashboards, independent of any single data source.