GNU Health - GNU Health is a Free/Libre project for health practitioners, health institutions and governments.
CryptoKitties - Breed and collect adorable creatures using Ethereum
OpenEMR - OpenEMR is an open source electronic health records and medical practice management solution.
Mars Genesis - 10,000 unique parcels of Mars stored on the blockchain
drchrono - An EHR built for your specialty:
Crypto Corgis - Crypto corgis live (and die) on the blockchain