This code system http://terminology.hl7.org/CodeSystem/testscript-profile-origin-types defines the following codes:

Code	Display	Definition
FHIR-Client	FHIR Client	General FHIR client used to initiate operations against a FHIR server.
FHIR-SDC-FormFiller	FHIR SDC FormFiller	A FHIR client acting as a Structured Data Capture Form Filler.