Metronome aims to optimize for self-governance, reliability, and portability. Founded by a number of veterans in the space (e.g. Jeff Garzik, Matthew Roszak), Metronome is founded on three key design principles:
Self-governance with no undue influence from founders after initial launch and public access — contract governance starts at launch.
Reliability and predictability where issuance and supply are immutable
Portability to enable maximum decentralization, even across different blockchains. The first 'chainhop' took place in summer 2019, between Ethereum and Ethereum Classic
Ripple is a global payment protocol aimed to provide fast transactions and cheap payments internationally. The network uses a digital currency known as XRP (sometimes it's referred to as Ripple). Unlike other cryptocurrencies Ripple is not aimed to replace banks, rather this project is created to improve the work of banks (including transactions between different banks) via blockchain solutions.