Set in Block - Blockchain-based permanent message creator and reader
CryptoKitties - Breed and collect adorable creatures using Ethereum
Rushline - Anonymously follow people's private conversations
Ethereum Gas Monitor - Ethereum Gas Monitor is a mac menu bar app that displays gas prices for fast, average and safe slow ethereum transactions.
Tchapper - Make all your messages unreadable
CryptoPunks - Unique characters you can own on the Ethereum blockchain