HAPI FHIR

HAPI FHIR is an open-source Java-based implementation of the HL7 FHIR (Fast Healthcare Interoperability Resources) standard for healthcare data exchange. It provides a comprehensive framework for building FHIR-compliant applications, including a robust server, client libraries, and tools for working with FHIR resources. HAPI FHIR is widely used in the healthcare industry to facilitate interoperability and data exchange between different healthcare systems.