Kobalt Holding B.v.

What Kobalt Holding B.v. does

Kobalt Digital B.V. is a Dutch custom web development boutique founded in 2017 and headquartered in Alkmaar, Netherlands, co-owned by Reinier Sierag and Arne van Hoorn. The firm designs, develops, and maintains bespoke digital products — customer portals, my-environments, webshops, API integrations, and custom websites — primarily for Dutch SMB/MKB clients alongside government, healthcare, agencies, construction, sport, culture, and education sector organizations. The company operates with approximately 10 employees and is bootstrapped with no external funding identified.

The technical stack is centered on open-source technologies — Laravel, Statamic, WordPress, Vue.js, Alpine.js, and Tailwind CSS — supported by Kobalt Managed Hosting built on OpenLiteSpeed/Laravel Forge. Beyond client services, Kobalt has developed proprietary IP including PassTransfer and PassTransferPro (a €57/year whitelabel secure password-sharing product), the Goods for Refugees multilingual (11-language) donation-matching platform (3,000+ matches in year one, 81% mobile usage), Domiportal (housing construction monitoring for Woningmakers Nederland), and a Tiem Liner logistics application processing 500,000+ shipments. Integration expertise spans Mollie, Stripe, WhatsApp Business API, MailChimp, MoneyBird, AFAS, Nmbrs, Otys, DirectAdmin, and Google Maps.

The business model combines project-based professional services revenue from bespoke development engagements with recurring managed-services revenue from hosting, support, and maintenance contracts, supplemented by subscription revenue from PassTransfer Pro. Client acquisition is founder-led direct sales supported by an online project calculator that delivers proposals within three business days. The company maintains Dutch-Laravel-Foundation-aligned community presence (board seat, podcast co-production) and in 2025 launched Alkmaarsch as a design-driven sister brand for regional clients. Selected enterprise and institutional clients include Heineken Pensioenfonds, AB InBev, Tiem Liner, and Woningmakers Nederland, alongside nonprofit engagements for Goods for Refugees, TEDxAlkmaar, and Baseball Against Cancer.

Name

Kobalt Holding B.v.

Legal name

Kobalt Digital B.V.

Website

https://kobaltdigital.nl

Company type

Private

Founded year

2017

Operating status

Operating

Headcount range

1–10 employees

Short description

Kobalt Digital B.V. is a Dutch boutique web agency of ~10 people specializing in custom Laravel/Statamic/WordPress applications, managed hosting, and proprietary tools like PassTransfer, serving Dutch SMB, government, enterprise, and nonprofit clients.

Ownership category

akta.pro rank

Headquarters

HQ city

Alkmaar

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Custom Web Application Development: Bespoke web application development services for SMB, government, and enterprise clients. Projects range from customer portals, my-environments, webshops, API integrations to custom websites.
2. Managed Hosting Services: Kobalt Managed Hosting providing server management, optimization, and maintenance services.
3. PassTransfer SaaS: PassTransfer Pro version priced at €57 per year, offering whitelabel capabilities with own subdomain, logo, colors, and optional Chrome extension.
4. Support and Maintenance: Ongoing support services including updates, maintenance, legacy software management, and automatic testing.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels13 records

Core offering

Kobalt is a Dutch digital agency that designs, develops, and supports custom web applications, customer portals, e-commerce platforms, and bespoke websites for SMB, government, healthcare, and enterprise clients. Their work is built primarily on Laravel, Statamic, and WordPress. They also offer managed hosting, API integration services, and the proprietary PassTransfer secure password sharing SaaS product.

Product overview

Kobalt Digital is a digital agency offering custom web applications and websites built on Laravel, Statamic, and WordPress platforms. The core products include PassTransfer (secure password sharing tool available in free and Pro versions), Goods for Refugees (multi-language donation platform), Domiportal (housing construction monitoring system), and the Tiem Liner logistics application. Supporting services span strategy, design, development, and ongoing support. The company also provides managed hosting infrastructure using OpenLiteSpeed and Laravel Forge. Notable client projects include Heineken Pensioenfonds (accessible multilingual website), Baseball Against Cancer (dual maatwerk websites), and TEDxAlkmaar (event website with maatwerk design).

Differentiator

Problem solved

Functional benefit

Brands

• Alkmaarsch: A regional, design-driven label that combines local pride and craftsmanship for local clients. Launched in 2025 as a sister company to Kobalt Digital.

Products and services

• PassTransfer
• PassTransferPro
• Strategy Services
• Design Services
• Custom Development Services
• Kobalt Managed Hosting
• Support and Maintenance Services

Quantifiable outcome

• 3,000+ successful matches on Goods for Refugees platform
• +3 more outcomes

Named customers15 records

Segments8 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration10 records

Feature3 records

Partnerships

Six partnerships are on record, tiered core and minor.

• Dutch Laravel FoundationcoreStrategic or Co-development Partner · 1 January 2024Kobalt is a member of the Dutch Laravel Foundation. Reinier Sierag serves as a board member. They co-produce the Dutch Laravel Foundation Podcast featuring interviews with Laravel experts, community members, and industry leaders including Taylor Otwell, creators of Laravel packages, and other notable figures.
• TEDxAlkmaarminorGTM or Marketing PartnerKobalt served as headline sponsor for TEDxAlkmaar and developed their event website with custom design and AI-generated visuals.
• KWF KankerbestrijdingminorGTM or Marketing PartnerKobalt contributed digital solutions for Baseball and Softball Against Cancer events, with proceeds going to KWF (Dutch Cancer Society).
• COOKS CrossOver CommunicatiecoreStrategic or Co-development PartnerStrategic partnership with COOKS CrossOver Communicatie, a bureau specialized in Sales Enablement. Together with Kobalt they developed the AB InBev sales presenter for hospitality representatives.
• Stichting Het Vergeten KindminorGTM or Marketing PartnerEnd-of-year charity action in collaboration with Stichting Het Vergeten Kind (Foundation for Forgotten Children).
• AlkmaarschcoreStrategic or Co-development PartnerKobalt launched Alkmaarsch as a sister company - a regional, design-driven label combining local pride and craftsmanship. Milan Bakker serves as Owner of Alkmaarsch.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Dept Agency: Largest independent digital agency in the Netherlands and globally, offering creative, engineering, data, and marketing services. Operates at a much larger scale than Kobalt across overlapping verticals (MKB, government, industry), competing for many of the same enterprise and (semi-)overheid RFPs.
• 1Password: Established password manager and secure credential-sharing platform with business and individual tiers. Most relevant as a broad incumbent competing for the secure-password-sharing use case that PassTransfer Pro targets at the SMB and whitelabel layer.

Direct peers

• Qlic: Dutch digital agency focused on Laravel-based custom web applications, API integrations, and platform development. Closely comparable to Kobalt in technical specialization and SMB/MKB customer segment.
• Buro BINNEN: Dutch digital agency building custom websites, webshops, and web applications using modern open-source stacks. Comparable to Kobalt on service portfolio, Dutch MKB and (semi-)overheid client mix, and design-led delivery.
• Hoppinger: Rotterdam-based digital agency specialized in Laravel, Statamic, and WordPress custom web application development. Most direct comparable in technology stack, niche, and Dutch mid-market positioning to Kobalt.
• Spilberg: Dutch custom software and web application development agency serving enterprise and government clients. Comparable to Kobalt in services offered (custom builds, integrations, support) and Dutch (semi-)overheid focus.
• Active Collective: Amsterdam-based digital agency building bespoke web applications and platforms using Laravel and modern JavaScript frameworks. Directly comparable to Kobalt on stack, custom-development model, and Dutch enterprise/MKB segment.
• Egotix: Alkmaar-region digital agency specializing in custom web development, online platforms, and integrations for Dutch mid-market and enterprise clients. Highly comparable to Kobalt on location, size band, and Laravel/PHP-based delivery model.
• Password Pusher: Open-source tool for sharing passwords and sensitive links with expiration, broadly aligned with PassTransfer's free-tier functionality. Most direct product-level peer for Kobalt's consumer/individual password-sharing flow.
• Limoen (LimoenGroen): Dutch agency providing custom web applications, webshops, and online platforms with a focus on Laravel/PHP and accessibility. Directly comparable to Kobalt on stack, accessibility emphasis, and Dutch mid-market client base.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• GitHubgithub.com/kobaltdigital
• YouTubeyoutube.com/channel/UCBsdw0O5T_PspzG4S7itKYQ
• LinkedInlinkedin.com/company/kobaltdigital
• Instagraminstagram.com/kobaltdigital

Compliance2 records

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 Kobalt Holding B.v.