Open Source FHIR implementations
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This page lists known open source implementations of the FHIR specification. For a list of running servers, see Publicly Available FHIR Servers for testing
- JAVA: https://github.com/jamesagnew/hapi-fhir - James Agnew / University Health Network
- Open-source Java library for quickly creating FHIR Servers and Clients
- Geared towards adding FHIR capability to existing applications (e.g. it's not a database, it's a library for quickly bolting FHIR on to your own database, or connecting to other FHIR servers as a client)
- Supports all resource types, most operations, and both xml and json encodings
- "Tinder" code generator (Maven plugin) creates model objects and clients from Profiles and Conformance statements
- DotNet FHIR Client: https://github.com/ewoutkramer/fhir-net-api
- Reference client with branches supporting each version of FHIR
- Supports all resource types, searches, all operations, xml + json
- Validation, FhirPath, very basic terminology server implementation
- Available via NuGet
- Documentation available here http://docs.simplifier.net/fhirnetapi/index.html
- DotNet Server: https://github.com/FirelyTeam/spark
- Reference server built in parallel with Grahame's to test the specification (actively developed during DSTU2, recent updates to support STU3)
- Supports all resource types, searches, many operations, xml + json
- Built in .NET with the .NET reference implementation, WebApi 2.0 library, Mongo DB for storage and search.
- Note there is also a WebApi façade that can be used to put in front of your own storage
- Java - SMART on FHIR: https://sandbox.smarthealthit.org
- Open source reference implementation of the SMART on FHIR stack in Java and MySql based on MitreId Connect and HAPI FHIR.
- Incorporates synthetic and de-identified data sets for DSTU2 and STU3, as well data management tools including the SMART Patient Browser and FRED FHIR Resource Editor.
- Technical documentation is at http://docs.smarthealthit.org and code is at https://github.com/smart-on-fhir
- Delphi: http://github.com/grahamegrieve/fhirserver
- De facto reference server (runs at http://fhir.healthintersections.com.au)
- general purpose server that implements all of the specification
- development platform: (delphi / windows / mssql)
- Ruby: https://github.com/fhir-crucible/fhir_client and https://github.com/fhir-crucible/fhir_models
- Open-source Ruby library for quickly creating FHIR applications
- Geared towards adding FHIR capability to your Ruby applications.
- Supports STU3 (default) and DSTU2, all resource types, most operations, and both xml and json encodings
Other Open source Implementations
- Standalone open-source FHIR server from Asymmetri khttps://www.asymmetrik.com/asymmetrik-fhir/
- Winner of the ONC Secure FHIR Server Challenge (2018) https://www.challenge.gov/challenge/secure-api-server-showdown-challenge/
- Additional resource profiles in heavy development
- Implements a core FHIR server, with custom adapters for non-FHIR data sources.
- Example adapter for MongoDB: https://github.com/Asymmetrik/node-fhir-server-mongo 
- FHIRBase - open source relational storage for FHIR with document API based on PostgreSQL. FHIRBase is an attempt to take the best parts of Relational & Document Databases for persistence of FHIR resources. FHIRBase stores resources relationally and gives you the power of SQL for querying & aggregating. At the same time FHIRBase provides a set of SQL procedures & views to persist and retrieve resources as a json documents in one hop.
- the FHIR build tool itself is open source and includes various definitional and reasoning tools. See . If you aren't signed up to the HL7 GForge, you can access the FHIR repository at  anonymously.
-  - DSTU-2 FHIR entities compatible with .Net Core
- FHIR terminology resources are available on Valentia SnoChillies terminology Server: https://valentiatech.snochillies.com/
* Value Sets * $expand * $validate-code * Code Systems (SNOMED CT, LOINC) * $lookup * $subsumes * Concept Map * $translate * $closure * Capability Statement ( format can in xml or in json ) * https://valentiatech.snochillies.com/fhir/metadata (as in XML default) * https://valentiatech.snochillies.com ( GUI )
* SNOMED browser: https://snochillies.com/ by Abdul Rauf (firstname.lastname@example.org)
- Patients First NZ Terminology Server - Exemplar FHIR-based Terminology Service, including SNOMED CT International Edition.
- https://github.com/fhir-crucible/crucible - Crucible FHIR Testing Platform. Public instance at https://projectcrucible.org
- Synthea - Synthetic patient simulation that generates longitudinal FHIR (STU3 and DSTU2) records suitable for software development, integration, testing, demoing. Over 35 diseases with reasonable comorbidities and treatments. Supports Patient, Condition, Encounter, Observation, DiagnosticReport, Immunization, AllergyIntolerance, MedicationRequest, Procedure, Organization.
- FHIR Kit Client - A Node.js FHIR client library
- FHIR Kit Create React App - "Create React App" template for a confidential FHIR ReactJS application.
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