The Thing System is a set of software components and network protocols that aims to fix the Internet of Things. Our steward software is written in node.js making it both portable and easily extensible. It can run on your laptop, or fit onto a small single board computer like the Raspberry Pi.
See
https://github.com/VOLTTRON/volttron
for a full system that does BACnet, a building automation and control system standard of sorts. See
https://en.wikipedia.org/wiki/BACnet
for the Wikipedia version of documentation for this protocol.
The one consumer device I've found that speaks this protocol is a water heater from A O Smith, where they call the system iCOMM.
http://www.aosmithconnect.com/compatible_products/compatible_products.html http://www.hotwater.com/water-heaters/commercial/accessories/icomm-remote-monitoring/
I am in the market for a new water heater, but...these are all a bit much for my needs.
Mostly FYI! Thought I'd capture and share this info somewhere it might find future use, don't have a need for it now.