FLO is a scrypt based coin with quick transaction processing that introduces a useful new feature called 'transaction comments'. These transaction comments enable FLO to facilitate a number of unique applications and enhancements within the blockchain.
Shardus is building distributed ledger software to remedy the problems of traditional blockchains -- scalability, decentralization and efficiency. The technology being developed will use compute and state sharding to accommodate billions of daily active users, allowing for global-scale decentralized networks.