Thanks to the very handy tool over at blocktrail.com, we have collated a list of mining pools that have mined bitcoins since the start of the network. We also have more up to date block finding counts here. This list isn’t comprehensive as a number of private pools and solo exist, but this is giving us a guide which we are using to review the various publicly available pools with our bitcoin mining review rig.
Looking for more recent block finding data for mining pools? Check out our Bitcoin Mining Pool Charts category