Fiat-collateralized stablecoins

Tether - USDT

Trusttoken - True USD 

Circle - USDC

Stably 

AAA Reserve 

X8X

Globcoin

Stasis

Stronghold USD

Gemini Dollar - GUSD

Paxos standard

 

crypto-collateralized stablecoins

BitShares - BitUSD 

MakerDAO - Dai 

Sweetbridge 

Havven - nusd

Augmint

algorithmic Supply stablecoins

Basis

Fragments

Carbon 

Kowala 

Hybrid Stablecoin Models

Reserve 

Saga 

Aurora - Boreal

Alternative Stablecoin Models

Phi 

StableUnit 

Terra Money

Celo

 

Metal-backed stablecoins

DIGIX Global

Hellogold