Siilo

What Siilo does

Siilo, now operating as Doctolib Connect, is a Dutch secure messaging platform founded in 2016 by Joost Bruggeman and Arvind Rao to enable healthcare professionals to communicate, coordinate care, and consult on cases without exposing patient data. The product provides end-to-end encrypted messaging across mobile (iOS/Android), web, and desktop clients, supported by PIN and biometric authentication, image anonymisation tools (face, tattoo, name, and date-of-birth blurring), continuous encryption of messages and media, and a crowd-sourced medical directory with verified clinician badges distinguishing government-registered medical professionals from identity-only verified users. Following its 2023 acquisition by Doctolib, the European digital healthcare leader, Siilo was rebranded as Doctolib Connect and integrated into the parent platform.\n\nThe company operates a two-tier commercial structure. Doctolib Connect Messenger is a free consumer-tier app used by individual clinicians and ad-hoc teams across Europe. Connect for Organisations is a paid annual subscription offering closed private networks, admin tools, SCIM-based member provisioning, and organisational-level GDPR processor agreements for accounts of 30 to 1,000-plus employees, sold via a consultation-led direct sales motion. The platform serves individual professionals (doctors, nurses, midwives) plus enterprise customers including hospitals, clinics, professional associations, and regional healthcare networks, with named clients such as NHS institutions, University Hospitals Birmingham NHS Foundation Trust, Blackrock Clinic, St James Hospital, Beaumont Hospital, UZ Brussel (ComfortKIDZ), Cliniques de l'Europe, and the Belgian Union Professionnelle des Sages-Femmes Belges.\n\nSiilo / Doctolib Connect monetises primarily through enterprise subscriptions to Connect for Organisations, with the free Messenger functioning as a top-of-funnel acquisition channel driven by professional referrals, content marketing, and app store distribution. Reported operating scale includes 1.2 million professional users, 10 million monthly messages, 225,000 care organisations referenced across Europe, and 1,000-plus custom networks on the platform. A published clinical audit at University Hospitals Birmingham NHS Foundation Trust demonstrated a reduction in multidisciplinary team decision time from 3.9 days to 0.87 days per acute arthroplasty case, providing the strongest documented efficacy evidence. The company is headquartered in Amsterdam, operates across the Netherlands, Belgium, the United Kingdom, Ireland, Germany, and Italy, and now functions as a brand within the Doctolib corporate group.

Name

Siilo

Legal name

Siilo

Website

https://siilo.com

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

11–50 employees

Short description

Siilo, now Doctolib Connect, is a Dutch end-to-end encrypted messaging platform that enables individual healthcare professionals and enterprise organisations across Europe to coordinate patient care, share cases, and manage private networks in a GDPR-compliant environment.

Ownership category

akta.pro rank

Product category

Healthcare Messaging and Collaboration Software

NAICS

Computer Systems Design and Related Services (54151)

SIC

Services-Prepackaged Software (7372), Services-Health Services (8000)

akta.pro primary industry

Virtual Nursing, Telemonitoring & Command Center Platforms (HLACAFAH)

Keywords

• Secure healthcare messaging
• Clinical communication platform
• HIPAA GDPR messaging
• Medical professional network
• Healthcare collaboration software

Headquarters

HQ city

Amsterdam

HQ country

Netherlands

HQ region

Europe

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. Individual Messaging (Free): Free secure messaging app for individual healthcare professionals. Revenue model relies on network effects and conversion to organisational subscriptions.
2. Connect for Organisations: Paid subscription for organisations and associations requiring closed private networks. Includes admin tools, SCIM API, processor agreements, and custom implementation support. Organisation size starts from 30 employees.

Pricing tiers

Go-to-market motion2 records

Distribution channels5 records

Marketing channels8 records

Core offering

Doctolib Connect (formerly Siilo) is a secure, end-to-end encrypted messaging platform built specifically for healthcare professionals, available as a free mobile/web/desktop app (Doctolib Connect Messenger) for individual clinicians and teams, and a paid annual subscription (Connect for Organisations) for healthcare organisations and associations that adds closed private networks, admin tools, SCIM API member provisioning, and GDPR processor agreements. The platform combines messaging, a verified medical directory, image anonymisation, and PIN/biometric security to enable compliant clinical communication, case collaboration, and care coordination across 1.2 million professionals and 225,000 care organisations in Europe.

Product overview

Siilo operates as Doctolib Connect, a unified secure healthcare messaging platform comprising two main offerings: Doctolib Connect Messenger (a free, individual/team secure messaging app with end-to-end encryption for healthcare professionals) and Connect for Organisations (a paid subscription adding private organisational networks, admin tools, SCIM API provisioning, and processor agreements for enterprise compliance). The platform connects over 1.2 million healthcare professionals across Europe, handling 10 million monthly messages.

Differentiator

Problem solved

Functional benefit

Products and services

• Doctolib Connect Messenger Free, user-friendly end-to-end encrypted messaging app for individual healthcare professionals and small teams to securely connect and communicate without compromising patient data. Available on iOS, Android, desktop, and web.
• Connect for Organisations Paid annual subscription for healthcare organisations and associations (30 to 1,000+ employees) providing a secure closed private network, admin tools, member management with SCIM API provisioning, organisational-level GDPR processor agreements, and implementation/onboarding support.

Quantifiable outcome

• Reduced average decision-making time to 0.87 days compared to 3.9 days for conventional weekly MDT meetings, saving 3.03 days per case

Named customers10 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

Feature7 records

Partnerships

One partnership is on record.

• DoctolibcoreStrategic or Co-development Partner · 1 January 2023In 2023, Doctolib acquired Siilo to expand into the Netherlands market as part of its international expansion strategy. Siilo was integrated into the Doctolib platform and rebranded as Doctolib Connect. This acquisition provided Doctolib with secure medical messaging capabilities and access to the Dutch healthcare market.

Scale indicators5 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• TigerConnect: US-based secure clinical messaging and collaboration platform for healthcare organisations, the closest direct competitor to Doctolib Connect in functionality (role-based messaging, on-call scheduling, EHR integration) and target buyer (hospitals and health systems).
• Spok: Provider of secure healthcare messaging, on-call scheduling, and critical-communications solutions to hospitals and health systems; competes directly with Connect for Organisations in mid-market and enterprise healthcare segments.
• Halo Health: Cloud-based clinical communication and collaboration platform for hospitals and physician groups, offering secure messaging, role-based directories, and EHR integration — a direct functional and customer-segment competitor to Connect.
• Pulsara: Mobile-first clinical communication platform focused on time-sensitive care coordination (EMS, stroke, STEMI) across healthcare teams; a direct peer in the secure multidisciplinary team communication use case where Connect has documented MDT outcomes.

Broad incumbents

• Vocera (Stryker): Enterprise clinical communications and alarm-management platform owned by Stryker; a larger incumbent offering secure messaging, hands-free communication, and care-team coordination to hospitals, comparable to Connect's organisational offering but with broader device and workflow integration.
• Microsoft Teams (Healthcare): Enterprise collaboration platform with healthcare compliance features (HIPAA, NHS DTAC) increasingly used by hospitals for clinician communication; a broad incumbent that competes for the same clinical messaging use case and is often pre-deployed in customer IT estates.
• Imprivata: Healthcare IT vendor focused on identity, authentication, and clinical workflows including secure communications; comparable as an enterprise healthcare platform with adjacent messaging and provider-directory capabilities sold to hospitals and integrated delivery networks.

Regional players

• Hospify: UK-based secure healthcare messaging app for clinicians and care teams; comparable in product (consumer-style secure messaging for healthcare) and serves a partially overlapping UK market, though smaller in scale than Connect.

Emerging players

• Forward Health: UK secure messaging platform for NHS clinicians providing pager-replacement and care-team communication; an emerging player in a comparable niche with focus on the NHS, overlapping with Connect's UK NHS deployments.
• Pando: UK-based clinical messaging and task-management platform for NHS and European healthcare teams, with comparable secure messaging and care-team collaboration functionality aimed at clinical workforces.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/siilomessenger

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds2 records

Investors3 records

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 Siilo