I used
https://freebitco.in back in the days. But when you think about it how less you just get for your time, it's not even worth it.
Better do some bounties or join some good airdrop programs from new ICOs. They are by far more worth it then getting coins by logging in hourly.
I've been doing bounties for over a month now and so far I have quite good results. Just take a look at the ICOs that you are currently interested in and think it will go big. Then when you have a good amount you can simply trade for bitcoins. It's basically almost free, since it requires almost the same time that you would have invested in logging into the free bitcoin websites.