Swoop is a cross-chain exchange on Harmony that allows anyone to swap HRC20 and ERC20 tokens and add liquidity, solving speed and fees issues associated with other networks.
Try alpha version: https://swoop.demo.harmony.one
Demeter is a decentralized synthetic asset issuance protocol allowing users to long & short exposure to any asset class (DeFi index, BTC/ETH/Link, forex, equities, commodities) without bridges, with binary options as derivatives.
Try alpha version: https://demeter.demo.harmony.one
See: code, blog
Harmony-Binance is a bridge with smart routing and Binance as the trading partner with 100+ BNB assets on this cross-chain decentralized exchange.
Try alpha version: https://bnb.bridge.harmony.one/
Iris Bridge is a fully permissionless, trustless, decentralized bridge on Harmony for ALL ERC20 tokens. It employs an Ethereum light client on Harmony using Solidity.
Try alpha version: iris.demo.harmony.one
Building a bridge between Bitcoin-like blockchains with Harmony blockchain to unlock the assets such as BTC, BCH, LTC to Harmony.