SparkPool.com is a Global Ethereum mining pool that was initially called Ethfans. Currently, using a PPLNS system and has a minimum payout of 0.05 ETH with a 1% fee. (Difficulty set to 4 billion)
MinerGate is a cryptocurrency mining brand. The platform provides convenient software for mining a number of crypto coins and a mining pool in which this software or one of the supported side apps can be used. The platform was founded in 2014 and has gained a multi-million user base since then.
BitMinter was launched on 26 June 2011 and it allows users to mine BTC for a 1% fee while sharing the transaction fees with miners. The coinbase signature for this pool is: "BitMinter"