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.
Alchemy is a cryptocurrency payment solution and technology provider in Asia Pacific that powers online and offline merchants. It's designed to be a fast, secure, and convenient hybrid crypto-fiat payment systems and solutions.