Necessary disclaimer: this is not financial advice
PowerLedger: not so well-known, but great idea, good roadmap, actual practical application. Now available for exchange on changelly.com
Salt Lending: crypto-based loans, practical application
Stratis: great concept, good backing, active team, good roadmap for 2018
Nem: great technology, active team, insightful whitepapers
RE: My Portfolio in Crypto for Q1 2018