We just started a great open source project:
RFberryPi is a new wireless system to build custom home automations network. No more limits with open source software and architecture!
If you are interested have a look on the campaign:
https://www.kickstarter.com/projects/1641934337/rfberrypi-a-radio-shield-for-raspberry-pi-home-aut
Here a video which shows the functionality of the system:
https://www.youtube.com/watch?v=v7xaAFmdN8U&feature=youtu.be