I have been playing with Home Assistant for the last week and so far I like what I see. However, most of my hardware is Insteon. I know Insteon recently released a public API, and the Hub can be directly controlled with HTTP Post commands. Any chance someone has something in the works?
Best thing for insteon in an ISY from universal devices.
Then you can also use this:
home-assistant.io/components/isy994/
See here
Instead for paying hundreds of dollars for the ISY, run OpenHab and control it from HA using REST or a custom component as the link I posted.