Here is the list of the official Cardano Stake Pools (Will be populated after the hard fork) - Official Stake Pool Edit - (This is for the old ITN network)
Here is the list of the unofficial Cardano Stake Pools (I can not verify the authenticity of this) - Unofficial Stake Pool
Edit - As far as I can find, there are no official stake pools for Cardano expect what is seen in the Daedalus wallet. But PoolTool is pretty good. Technically speaking if you can find the ticker in your Daedalus wallet, then it’s not official.