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"
Merge Mining Pool also known as mmpool is a BTC mining pool that allows users to mine BTC for a 1.5% fee and to merge mine with Namecoin, Ixcoin, Devcoin, I0coin, Groupcoin, Unobtanium and Syscoin 2.0.