Four Digits
Four Digits is a Dutch Python/Django software consultancy building custom mission-critical web applications, Wagtail CMS implementations, and API integrations for Dutch government, NGO, and enterprise clients, with a Wagtail Core Team member on staff.
- Company typePrivate
- Founded2005
- HeadquartersArnhem, Netherlands
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Four Digits does
Four Digits B.V. is a Dutch software consultancy founded in 2005 and headquartered in Arnhem, Netherlands, operating with a team of approximately 22-35 employees. The firm specializes in custom web application development using Python and Django, with Wagtail CMS as its preferred content management platform. Its portfolio spans mission-critical systems including the Humanitas Registration System (supporting 20,000+ volunteers and 2.7M+ annual pageviews), government websites for Dutch water boards (HHSK, HHR) and the Utrecht Safety Region, an enterprise B2B auction platform for Industrial Auctions, financial client portals for Wijs & Van Oostveen, e-commerce for Efteling, climate monitoring for DYSECO, and the order management system for water research firm AQUON. The company also maintains the official Mollie Python API Client used by 200,000+ European merchants and contributes to the Wagtail open-source ecosystem as a Core Team member.
The firm's revenue model is anchored in project-based professional services for custom software builds, supplemented by recurring Service Level Agreement contracts for post-launch support, maintenance, and security advisory, plus managed hosting through its ISO-certified partner Exonet with EEA-resident data centers. Pricing is custom, project-based, and quoted in euros excluding VAT. Go-to-market is consultative enterprise sales targeting Dutch public-sector, NGO, financial services, and mid-market enterprise clients requiring compliance-heavy, bespoke digital infrastructure rather than off-the-shelf products. The firm holds ISO 9001 certification since 2009, ISO/IEC 27001 since 2019, and NEN 7510 healthcare-data certification since 2019, audited three times annually.
Strategically, Four Digits leverages its position as a Wagtail CMS Core Team member and organizer of Wagtail Space events to generate inbound demand from the Python/Django community. It publishes open-source Wagtail packages on PyPI (Wagtail Developer Reference, Wagtail Exact Crop, released June 2026) and runs the largest Wagtail conference in Western Europe. The company is privately held, founder/director-owned (Ralph Jacobs, Maarten Kling, Franklin Kingma as Directors), with no disclosed venture capital, private equity, or acquisition activity, and no parent company or subsidiaries.
Four Digits firmographics
Firmographics- Name
- Four Digits
- Legal name
- Four Digits B.V.
- Website
- https://fourdigits.nl
- Company type
- Private
- Founded year
- 2005
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Four Digits is a Dutch Python/Django software consultancy building custom mission-critical web applications, Wagtail CMS implementations, and API integrations for Dutch government, NGO, and enterprise clients, with a Wagtail Core Team member on staff.
- Ownership category
- akta.pro rank
Where Four Digits is headquartered
LocationHeadquarters
- HQ city
- Arnhem
- HQ country
- Netherlands
- HQ region
- Europe
Offices1 record
Markets served
Four Digits business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Custom Software Development: Four Digits develops custom web applications, online portals, APIs, and websites tailored to client needs. Revenue is generated through project-based development engagements with varying scopes and timelines.
- Service Level Agreements (SLA): Post-launch support, maintenance, and further development through SLA contracts. Includes 24/7 support options for urgent issues, proactive advice on software maintenance and security.
- Software Consultancy: Technical consulting services including project intake, team augmentation, or complete project takeover. Provides expertise in Django, Python, and React for software improvement or development.
- Hosting Services: Secure hosting and data storage within the EU (Netherlands) through their ISO-certified hosting partner Exonet, including AWS deployment options.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Custom project-based pricing |
Go-to-market motion2 records
Distribution channels1 record
Marketing channels6 records
Four Digits product offering
Product offeringCore offering
Four Digits is a Dutch software consultancy that designs, builds, and maintains custom web applications, online portals, APIs, and websites using Python and Django (with Wagtail CMS as its preferred content management system). The firm also delivers software consultancy, team augmentation, and post-launch Service Level Agreement support including 24/7 options, and offers secure EU-based hosting through partner Exonet with optional AWS deployment.
Product overview
Four Digits is a Dutch software consultancy specializing in custom web application development using Python and Django. The company operates as both a Wagtail Agency (with a core team member) and a technical partner for Mollie. Their portfolio includes mission-critical applications such as the Humanitas Registration System (HRS) for volunteer management, client portals and forms tools for Wijs & Van Oostveen (financial services), the AQUON Order Management System for water research, and auction platforms. They implement Wagtail CMS for government clients (HHSK&HHR, War Child, HVHL, VRU) and maintain open-source packages including the Mollie Python API Client and Wagtail Developer Reference/Exact Crop tools.
Differentiator
Problem solved
Functional benefit
Products and services
- Custom Software Development Bespoke web application development service using Python and Django. Covers full software lifecycle: design, development, consultancy, integration, and post-launch maintenance for enterprise and government clients.
- Wagtail CMS Implementation Implementation, migration, customization, and ongoing support of the open-source Wagtail CMS (built on Django). Four Digits operates as a recognized Wagtail Agency with a member on the Wagtail Core Team.
- Software Consultancy Technical consulting including project intake, team augmentation, advisory, and complete project takeover. Provides expert guidance in Django, Python, and React for software improvement or new development.
- Service Level Agreement (SLA) Support Post-launch maintenance and further development through recurring SLA contracts, including 24/7 support options for urgent issues, proactive software maintenance, and security advice.
- Hosting Services Secure hosting and data storage within the EU (Netherlands) via ISO-certified hosting partner Exonet, with AWS deployment options available.
- Wagtail Developer Reference Open-source Wagtail package (available on PyPI and GitHub) giving software engineers an overview of which blocks and page types are used within a specific Wagtail site, enabling faster and more targeted customer support.
- Wagtail Exact Crop Open-source Wagtail package (available on PyPI and GitHub) that adds an intuitive interface to Wagtail CMS allowing content editors to manually crop images with pixel-perfect precision.
- Mollie Python API Client Official open-source Python API client for Mollie, developed and maintained by Four Digits. Enables Python developers to integrate Mollie payment processing with support for payment methods including Mastercard, Maestro, Visa, American Express, Apple Pay, iDEAL, Klarna, SEPA, PayPal, Bancontact, and Billie.
Quantifiable outcome
- Humanitas HRS: 20,000+ daily users, 2.7M+ pageviews, 368,602 annotations annually
- +3 more outcomes
Companies that use Four Digits
Customer profileNamed customers14 records
Segments5 records
Ideal customer profiles4 records
Four Digits technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration17 records
Feature2 records
Four Digits partnerships and signals
Strategic signalPartnerships
Three partnerships are on record, tiered core and minor.
- ExonetcoreISO-certified hosting partner with data centers in the Netherlands. Four Digits uses Exonet for secure hosting, guaranteeing data remains within the EEA and complies with GDPR, ISO 27001, and NEN 7510.
- Anton & IreneminorDesign agency that collaborated with Four Digits on the Zumtobel Group project, providing innovative design concepts for the digital platform.
- Q42minorHosted Wagtail Space NL 2026 event at Q42's location in Rotterdam, bringing together international Wagtail developers.
Scale indicators3 records
Recent moves6 records
Expansion highlights5 records
Four Digits competitors and assessment
Company assessmentDirect peers
- Torchbox: UK-based digital agency and original creator/maintainer of Wagtail CMS. Closest direct peer — same Wagtail ecosystem, similar enterprise CMS and Django services, and overlapping open-source DNA.
- Reinout van Rees' Nelen & Klanten: Netherlands-based open-source GIS and water-management software firm using Django; competes for the same Dutch waterschap and water-research RFPs that Four Digits has won (HHSK, AQUON).
- Lancelots: Dutch Wagtail-focused agency specializing in Wagtail CMS implementations, Django and Python development. Direct Dutch competitor serving the same public-sector and enterprise Wagtail market.
- CodeRed (CR-Design): Dutch digital agency offering custom web development with CMS expertise and public-sector clients. Adjacent Dutch competitor in the same Wagtail/enterprise website space.
- Springload: New Zealand-based digital agency with strong Wagtail and Django heritage and a long track record in custom CMS builds. Comparable services, comparable open-source posture, similar size band.
- Maykin Media: Django-first software house in the Netherlands focused on government, healthcare and public-sector clients. Overlaps directly on Python/Django stack, Dutch public-sector GTM and compliance-driven delivery.
- Yannick Wouters' YATCO / Kalibrate: Belgian Wagtail agency offering custom Wagtail/Django development and CMS implementations. Same niche, neighboring geography, similar enterprise/government target segment.
Broad incumbents
- Thoughtworks: Global consultancy delivering custom software, digital platforms and enterprise transformation — broader incumbent that competes for the same enterprise custom-development RFPs but at much larger scale and without Wagtail specialization.
- Conclusion Xforce: Dutch digital agency with strong government and public-sector portfolio. Overlaps with Four Digits' Dutch government waterschap and public-services work, but at significantly larger scale and broader service mix.
Others
- Q42: Larger Dutch engineering firm with deep Wagtail involvement (hosts Wagtail Space NL events, employs Wagtail contributors). Not a direct competitor in Four Digits' niche but a relevant ecosystem participant and adjacent technical peer.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat5 records
Key risks5 records
Key highlights6 records
Customer concentration
Four Digits social profiles
Digital presenceFour Digits compliance and trust
Trust signalCompliance3 records
Four Digits financial estimates
Financial estimateRevenue estimate
Valuation estimate
Four Digits leadership team
Management profileNumber of profiles
Profiles6 records
Four Digits funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Four Digits M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Four Digits
What does Four Digits do?
Four Digits is a Dutch software consultancy that designs, builds, and maintains custom web applications, online portals, APIs, and websites using Python and Django (with Wagtail CMS as its preferred content management system). The firm also delivers software consultancy, team augmentation, and post-launch Service Level Agreement support including 24/7 options, and offers secure EU-based hosting through partner Exonet with optional AWS deployment.
Is Four Digits a public or private company?
Four Digits is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Four Digits founded?
Four Digits was founded in 2005. It employs 11 to 50 people.
Where is Four Digits based?
Four Digits is headquartered in Arnhem, Netherlands, in the Europe region.
How does Four Digits make money?
Four revenue lines are on record. Custom Software Development is the primary driver. The others are service Level Agreements (SLA), software Consultancy and hosting Services.
Who are Four Digits's main competitors?
Direct peers on record are Torchbox, Reinout van Rees' Nelen & Klanten, Lancelots, CodeRed (CR-Design), Springload, Maykin Media and Yannick Wouters' YATCO / Kalibrate. Broad incumbents are Thoughtworks and Conclusion Xforce. Q42 is listed as an others.
Does Four Digits have an API?
No public API is recorded for Four Digits.