There are 2 repositories under fhirbase topic.
FHIR Resources https://www.hl7.org/fhir/resourcelist.html
.NET library that provide access to fhirbase and demo project that use it
Convert FHIR resource definitions into Postgres views so they can be easily queries using SQL
HL7 FHIR Crypto API Microservice ensures safe transfer of HL7 FHIR resources between the eHealth App to FHIR server, without the end-user experiencing any change in the use of the app.
Fhirplayground is my personal learning curve project which main goal is getting basic understanding what FHIR is.