Similar coins
Feathercoin (FTC) received its name because its idea is to be “lighter than light”, due to instant transactions and faster processing of blocks. 
Zcash (ZEC) is a cryptocurrency with strong cryptography that is supposed to provide high security and privacy. At some point, Zcash was endorsed by Edward Snowden and Roger Ver. Zcash is a Bitcoin fork and it exists since 2016. The mechanism providing privacy is called zero-knowledge proofs (or zk-SNARKS).
Anyswap is a fully decentralized cross chain swap protocol, based on Fusion DCRM technology, with automated pricing and liquidity system.