Looking for a browser miner

Tested coinhive ( For monero browser mining ) hash rate is around 10-70 and you earn arround 0.02-0.08$ ( USD ) if The user mining 24 hours, is not really Worth only if you have a moviee website or something that an user spend 2-3+ hours on your website

I think currently the best option is 'white mining' such as JSECoin, which will use only 10% of CPU and you / your visitors don't even notice it.
But for visitors it is opt-in mining, they have to accept it (but many users just accept this without problem).
For Coinhive (Monero) it is too much competition to make good revenue.

browser miner is useless