What Firely does

Firely is a Netherlands-headquartered, privately held company founded around 2015 that provides software, training, and professional services for HL7 FHIR-based healthcare interoperability. Its core product is Firely Server (formerly Vonk), a certified FHIR API server built on .NET that supports FHIR R4, R5, and STU3 with pluggable storage (SQL Server, MongoDB, SQLite) and deployment via Docker, Kubernetes, Azure App Service, or on-premises. Around this server, Firely has assembled an integrated product suite including Simplifier.net (a collaboration platform for publishing and sharing FHIR profiles and implementation guides), Forge (a visual profiling tool), the open-source Firely .NET SDK, Firely Auth (SMART on FHIR OAuth 2.0), FHIR Facade (a legacy-system-to-FHIR adapter with asynchronous PubSub Messaging), Firely Terminal (a CLI for FHIR pipelines), and Firely Server Ingest for bulk data loading. Together these tools span the full FHIR implementation lifecycle, from profile authoring through server deployment and legacy integration.

The company monetizes through enterprise software subscriptions for Firely Server and related modules sold via custom annual contracts, a freemium model on Simplifier.net (free accounts with paid upgrades), instructor-led and e-learning FHIR training courses (priced at $1,500–$1,600 for in-person and $250 for e-learning), and stand-alone FHIR consulting and secondment services. Its go-to-market combines a product-led growth motion (30-day free trial of Firely Server, free Simplifier.net accounts) with enterprise field sales targeting four primary verticals: payers (CMS-0057-F, prior authorization, Digital Quality Measures), healthcare providers (clinical data exchange and compliance), digital health companies (embedding FHIR in products), and health authorities (national FHIR standards and EHDS).

Notable customers span NHS, WHO, Humana, Roche, Health Catalyst, UCSF, University Hospital of Aachen, MedCom, VIPP, and Zuyderland Hospital, with partnerships including HL7 International (State of FHIR report), Da Vinci Project, NCQA, CMS, and New Jersey Innovation Institute (NJ Medicaid deployment). The company operates from Amsterdam (Firely B.V.) and New York (Firely USA Inc., Delaware), is ISO certified, and was ranked #2 in a 2026 list of top FHIR software development companies. Leadership includes CEO Martine Berden and CTO Ewout Kramer, a recognized co-initiator of the FHIR standard.

Name

Firely

Legal name

Firely B.V.

Website

https://fire.ly

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

11–50 employees

Short description

Firely provides FHIR interoperability software, training, and consulting for healthcare organizations. Its certified Firely Server, Simplifier.net collaboration platform, .NET SDK, and FHIR Facade help payers, providers, digital health companies, and health authorities implement HL7 FHIR.

Ownership category

akta.pro rank

Product category

Healthcare Interoperability Software

NAICS

Custom Computer Programming Services (541511), Computer Systems Design and Related Services (54151)

SIC

Services-Prepackaged Software (7372), Services-Computer Programming Services (7371)

akta.pro primary industry

Interoperability Standards, Profiles & Implementation (HL7/FHIR/IHE) (HLACABAA)

akta.pro secondary industries

FHIR/HL7 Data Repositories & Canonical Data Models (HLACAIAI), EHR/EMR Integration & Interoperability Middleware (HL7/FHIR) (HLALAKAD)

Keywords

• Healthcare interoperability software
• FHIR server platform
• HL7 FHIR API
• Health data exchange
• FHIR implementation services

Headquarters

HQ city

Amsterdam

HQ country

Netherlands

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Marketing or Sales, Operations, Infrastructure

Revenue model

1. Software Licenses and Subscriptions: Firely Server and other software products are sold through licenses and subscriptions. Contracts are custom enterprise agreements with automatic renewal terms. Fees are invoiced annually in advance for yearly payment plans.
2. Simplifier.net Platform: The Simplifier platform offers both free accounts and paid plans (Simplifier Paid Plans) with additional features. Accounts are free to create but paid plans provide enhanced capabilities.
3. Consulting and Professional Services: Firely provides FHIR consulting services including advisory, consultancy, and secondment services. Consultants are made available to perform services at customer direction.
4. Training Courses: Firely offers instructor-led and e-learning training courses on FHIR, including 3-day overview courses, profiling courses, and SDK training. Courses are priced at €1,500-1,600 for instructor-led and $250 for e-learning.
5. Support and Maintenance: Support services may be bundled with software contracts, with Firely providing maintenance, bug fixing, and technical support as specified in individual Contracts.

Pricing tiers

Go-to-market motion3 records

Distribution channels5 records

Marketing channels9 records

Core offering

Firely provides a comprehensive suite of HL7 FHIR software, training, and consulting services that enable healthcare organizations to implement healthcare data interoperability. The core product is Firely Server (formerly Vonk), a certified FHIR API platform supporting FHIR R4, R5, and STU3 specifications, complemented by Simplifier.net for collaborative FHIR profile development, Forge for profiling, the open-source Firely .NET SDK, and supporting tools for authentication, legacy system integration, and bulk data ingestion.

Product overview

Firely provides a comprehensive FHIR software and services ecosystem centered on healthcare interoperability. The core offering is Firely Server, a certified FHIR API platform (formerly Vonk), complemented by Simplifier.net for collaborative FHIR model development and Forge for visual FHIR profiling. Supporting tools include Firely Terminal (CLI for FHIR automation), Firely Auth (SMART on FHIR authentication), FHIR Facade (legacy system connector), Firely Server Ingest (bulk data import), and Firely Server Plugins (extensibility). The Firely .NET SDK provides open-source development tools. Services include expert FHIR consulting and instructor-led training courses (EU and US editions) covering FHIR overview, data modeling, profiling, and implementation. The portfolio spans from core FHIR server infrastructure to developer tools, profiling applications, and professional services.

Differentiator

Problem solved

Functional benefit

Brands

• Simplifier: A platform for sharing and collaborating on FHIR model development
• Firely Server
• Firely .NET SDK
• Firely Auth
• Firely Terminal
• FHIR Facade
• Forge
• Firely Server Ingest

Products and services

• Firely Server

Quantifiable outcome

• 80% of surveyed countries now mandate or advise FHIR use in healthcare regulations
• +2 more outcomes

Named customers15 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Feature9 records

Partnerships

Five partnerships are on record, tiered flagship and core.

• HL7 InternationalflagshipStrategic or Co-development PartnerAnnual partnership to conduct the State of FHIR survey tracking FHIR adoption globally. Firely co-authored the report with HL7 International, with Firely's Product Lead for Simplifier serving as primary author. This partnership positions Firely as a thought leader in healthcare interoperability.
• Da VincicoreTechnology or IntegrationDa Vinci Project is a HL7 FHIR accelerator focused on value-based care use cases. Firely products support Da Vinci implementation guides for payers and providers.
• NCQAcoreStrategic or Co-development PartnerNational Committee for Quality Assurance partnership. Firely supports Digital Quality Measures implementation aligned with HEDIS and NCQA standards.
• NCQAcoreTechnology or IntegrationCMS partnership for interoperability certification. Firely Server supports compliance with CMS interoperability mandates.
• New Jersey Innovation Institute (NJII)coreImplementation/ SI/ Consulting PartnerNJII partnered with Firely to implement CMS Patient Access and Provider Directory APIs for New Jersey's statewide Medicaid program serving 1.8 million members. Firely's Product Manager presented alongside NJII at HIMSS26 on implementation lessons.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Microsoft (Azure Health Data Services): Microsoft Azure Health Data Services includes a managed FHIR service as part of its broader cloud and healthcare platform. Competes on certified FHIR server functionality but bundles it within a much wider portfolio.
• Google Cloud (Healthcare API): Google Cloud Healthcare API provides FHIR-based data storage and exchange capabilities embedded in GCP. A hyperscaler incumbent that competes for the same cloud-native FHIR workloads as Firely Server.
• InterSystems: InterSystems HealthShare is a long-established healthcare interoperability platform that includes FHIR support alongside broader data integration capabilities. Larger incumbent competing for the same enterprise interoperability RFPs.
• Amazon Web Services (HealthLake): AWS HealthLake is a HIPAA-eligible service for storing, querying, and analyzing FHIR-formatted health data. Represents a major cloud incumbent offering bundled FHIR capabilities that compete with standalone FHIR server software.

Emerging players

• Meld (formerly Diameter Health): Meld focuses on clinical data normalization and FHIR-based data quality for payer and provider use cases. Comparable in its CMS-driven payer focus but with narrower scope than Firely's full-stack product suite.

Direct peers

• Redox: Redox offers a healthcare API integration platform increasingly built on FHIR, serving digital health companies and providers. Comparable to Firely's digital health company and EHR integration use cases.
• 1upHealth: 1upHealth provides a FHIR-native healthcare data platform for payers and providers focused on CMS interoperability compliance. Direct overlap with Firely in the payer/regulatory compliance segment, particularly around CMS-0057-F.
• Smile Digital Health: Smile CDR (now Smile Digital Health) is the most direct FHIR data and integration platform competitor, offering a certified FHIR server, CDR, and clinical data repository. Competes head-to-head with Firely Server for healthcare interoperability deployments globally.
• Particle Health: Particle Health provides a FHIR-based API for clinical record retrieval, targeting payers and digital health companies. Competes in the same FHIR API and data exchange category as Firely Server.

Regional players

• Health Catalyst: Health Catalyst is both a Firely customer and adjacent analytics platform using FHIR for data warehousing and population health. Overlaps in the FHIR-for-analytics space but is primarily US-focused and operates at a different layer of the stack.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UC9tiYNtYF9-hh9FP7KF2sgA
• LinkedInlinkedin.com/company/firely

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Firely