CryptoKitties - Breed and collect adorable creatures using Ethereum
Universal Dapp Store - Discover decentralized apps on ETH, Blockstack, IPFS & more
OpenSea - Ebay for cryptogoods. Buy and sell items on the blockchain.
DappRadar - A list of the best decentralised Ethereum applications
Rarible - Create, sell, collect digital items secured with blockchain
AppScope - Appscope, one of the leading directories for Progressive Web Apps (PWAs).