Dapp Store - DappStore is a platform, which lists all popular dApps
Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
DappRadar - A list of the best decentralised Ethereum applications
Supabase - An open source Firebase alternative
Universal Dapp Store - Discover decentralized apps on ETH, Blockstack, IPFS & more
neo4j - Meet Neo4j: The graph database platform powering today's mission-critical enterprise applications, including artificial intelligence, fraud detection and recommendations.