CryptoTwittos - Own Twitter accounts, on the blockchain
CryptoKitties - Breed and collect adorable creatures using Ethereum
Ethereum Gas Monitor - Ethereum Gas Monitor is a mac menu bar app that displays gas prices for fast, average and safe slow ethereum transactions.
Mars Genesis - 10,000 unique parcels of Mars stored on the blockchain
SmartContract UI - Quickly interact with smartcontracts on over 260 chains!
CryptoAlpaca - Adopt unique alpaca on blockchain and shear wools everyday