MiningPool.at is an ETH mining pool, located and operated in Europe, with no fees and a Min. payout threshold of 0.05 Ether. The pool uses the prop payment system and payouts run twice per day.
SparkPool is a multi-cryptocurrency pool where users can mine FRN, HYPER, KURT, QVORT and RAIN. The pool runs on an automatic Prop payment system and charges a fee of 1%.
Support XMR is a large mining pool designed for a single purpose which is Monero mining. The fee is quite low (0.6 ). The minimum payout is 0.1 XMR. Such an amount can be demanding for some people although it's quite a standard amount. The rewards are accruing every 2 hours. It is fair to say that Support XMR is popular among its users and the feedback is mostly positive.
Solo.CKPool is a solo mining pool with a 1% fee for BTC. CKPool allows users to mine solo without downloading the blockchain or running a node, which means users get 99% of the full bitcoin block reward (12,5 BTC).