Domogik is a free Open Source home automation solution.
Website : http://www.domogik.org
Here you will find an installer which will help you to install Domogik in one command.
Be caution : WORK IN PROGRESS
We are currently developping this installer : it will be available only with Domogik 0.6 which is not yet released!
Just do :
wget https://raw.githubusercontent.com/domogik/domogik-installation/master/install-develop.sh -O install-develop.sh ; chmod +x install-develop.sh ; sudo ./install-develop.sh