@Prodyut Bora said:
Clipsal (http://www.clipsal.com), a division of Schneider Electric, is into building automation. They have developed an "open standard" protocol called C-Bus (http://www.cbus-enabled.com/default.html).
Why don't you consider adding C-Bus to your list of protocols?
Regards
Prodyut
Unfortunately the C-Bus protocol is not an open standard. It is however available to C-Bus Enabled partners. There is a subset of the protocol available as a 'public' document but it is restricted in its features.
There is a C-Bus to xAP protocol convertor and xAP is very much an open standard - and appears in the survey above. One of the benefits of xAP is that it is very simple yet powerful and its also easy to convert other protocols into xAP and hence integrate them into different applications. Most of the leading HA applications now have xAP plugins.