Welcome to Simplifier’s documentation site

On this site you will find the documentation for various FHIR tools and SDKs.

The currently documented projects are:

• Simplifier - FHIR profile registry
• Forge - FHIR profile editor
• Vonk - FHIR server
• Firely .NET SDK - Open Source FHIR library
• Firely Terminal (Torinox) - Command-line FHIR tool
• FHIR Mapper - Engine for the FHIR Mapping Language
• VonkLoader - Bulk upload resources to any FHIR server

Versions overview

Product	FHIR R5 (preview)	FHIR R4	FHIR STU3	FHIR DSTU2	Firely tools used
Forge 25.1	✔️ 4.4.0 (alpha)	✔️ 4.0.1	✔️ 3.0.2	✔️ (frozen)	Firely .NET SDK 1.8
Simplifier 25.1.1		✔️ 4.0.1	✔️ 3.0.2	✔️ (frozen)	Firely .NET SDK 1.9, Vonk 3.6
Torinox 1.2.0		✔️ 4.0.1	✔️ 3.0.2		Firely .NET SDK 1.6
Vonk 3.9.1	✔️ 4.4.0 (alpha)	✔️ 4.0.1	✔️ 3.0.2		Firely .NET SDK 1.9
FHIR Mapper 0.5.0		✔️ 4.0.1	✔️ 3.0.2		Firely .NET SDK 1.9, Vonk 3.8
Firely .NET SDK 2.0	✔️ 4.4.0 (alpha)	️️️️✔️ 4.0.1	✔️ 3.0.2	✔️ (frozen)

See all released FHIR versions.