Fondu - Open source free ICO smart-contract builder
CryptoKitties - Breed and collect adorable creatures using Ethereum
thirdweb - thirdweb is an ecosystem of SDKs, dev tools, and dashboards that help teams build and manage web3 apps. Deploy custom or pre-built contracts to ETH, MATIC, AVAX, & more.
Mars Genesis - 10,000 unique parcels of Mars stored on the blockchain
PAID Network - PAID network's SMART agreements will transform business
Cryptocats - Cute little 8-bit cats on the Ethereum Blockchain