Proof Of Work (POW): Used by Bitcoin

Proof Of Stake (POS): To be used by Ethereum 2.0

Delegated Proof Of Stake (DPOS): Used by EOS

Proof Of Capacity (POC) AKA Proof Of State: Used by Burstcoin

Proof Of Elapsed Time (POET): Used by Hyperledger Sawtooth

Transaction As Proof Of Stake (TAPOS): Used by EOS

Delegated Byzantine Fault Tolerance (dBFT): Used by NEO

Proof Of users Activity (POA): Used by Decred

Proof Of Burn (POB): Used by SlimCoin

Proof of Stake Anonymous (PoSA): Used by Cloakcoin

Proof of Importance (POI): Used by NEM

Proof of Storage: Used by STORJ

Proof of Stake Time (PoST): Used by Vericoin

Proof of Stake Velocity (PoSV): Used by Reddcoin

Proof of Checkpoint (PoC):

Leased Proof of Stake (LPoS): Used by WAVES

Practical Byzantine Fault Tolerance (PBFT): Used by Persistent

Proof of Authority (PoA): TomoChain

Proof of Identity (PoI):

Proof Of Bribe: Morty Token

POW/POS Hybrid: Used by IOTA

Federated Byzantine Agreement: Used by Ripple

Proof Of Asset: Used by Digixdao

Proof Of Intelligence: Used by Aion

Proof Of Believability: Used by IOSToken

Proof Of Devotion: Used by Nebulas

Proof Of Retrievability: Used by Stori

Proof Of Weight (PoWeight): Used by Filecoin

Simplified Byzantine Fault Tolerance: Used by Chain

Proof Of Audit (POA): Used by DAPS

Matrix Proof Of Work (MPOW): Seele

Randomized Proof Of Stake (RPOS): Ultrain

Proof Of Engine (POE): Used by LTO Network

Secure Proof Of Stake (SPOS): Elrond

Proof-of-Immutable-State (POIS): Commerceblock

Proof Of Chain (POC): Clams

SPECTRE: HYCON

Tendermint: IRISnet

Hierarchical Delegated Proof of Stake (HDPoS): VITE

Proof Of Agreement: Credits

Proof Of Coverage: Helium.com