CryptoKitties - Breed and collect adorable creatures using Ethereum
Unlock - Monetize your content with a few lines of code
Submarine.me - Make IPFS-backed content unlockable with NFTs
ZELF - Instant money in messengers
Mini Mutants - Mini Mutants is an NFT collection of 10,000 unique images to collect.
MonetizeJS - Modern payment platform, no server required.