Some remarks to CoinCollector006's list:
PoS - Reddcoin, Blackcoin, Peercoin, Spectrecoin
PoW/PoS - Decred, Deep Onion
DPoS - Waves
Peercoin is PoW/PoS, although PoW blocks do not really add security because chain trust (the "longest chain" rule) depends only on PoS. In Novacoin (a Peercoin clone) and its clones, the chain trust depends on PoW _and_ PoS.
Proof of Importance - NEM
Proof of Importance is actually Proof of Stake with the addition of stake being "weighted" by the transactions the node does.
Proof of Signature - Xtrabytes
I've briefly looked into this and it seemed to be a variation of the "Byzantine Fault Tolerance" algorithm. The same is also true for DPoS. I would group "DpoS", BFT and Proof of Signature together.
Proof of Burn - Counterparty
This one is wrong - Counterparty is a layer on top of Bitcoin, Proof of Burn in CP is a method to distribute new coins but not a "block reward". Proof of Burn is only used by Slimcoin as a part of the consensus method.