Decentralized Exchanges: Airswap, Ethdelta, OX & Kyber Introduction
AirSwap dex is using their exchange protocol called Swap. (ERC-20 only)
Kyber is a wallet that utilizes a network of liquidity providers to pay and convert tokens. (On-chain, ERC-20 only)
Request Network is a wallet/app (they compare themselves to Paypal) using the 0x protocol to provide liquidity (Off-chain, ERC-20 only)
OmiseGo a white label wallet protocol that will use Plasma to trade p2p off-chain.
Tenx is creating COMIT, another off-chain p2p solution that works without a native token.