Hello,
Is very any plan to support openid (http://en.wikipedia.org/wiki/OpenID) authentication ?
Not from our side. Bridges need to come from the community. We just provide the bridging infrastructure. You're welcome to contribute a bridge file for that app or whatever app you could think of.
I understand. I will check openid API. I already know how to build a bridge for Coppermine. (I wrote a b2evolution bridge)