Jannes & Mannes

What Jannes & Mannes does

Jannes & Mannes is a Dutch custom web development agency founded in 2008 and based in Den Haag (now operating from Rotterdam following the December 2024 acquisition by Tabs & Spaces). The firm builds websites, portals, and bespoke system integrations for mid-market and enterprise clients, positioning itself as a "Tech voor Designers" — the technical implementation arm underneath Dutch creative and design agencies. Core technology is a headless CMS architecture in which WordPress serves as a content layer, Laravel/PHP handles backend logic, and Vue.js/Nuxt.js powers the front-end. Search is delivered via ElasticSearch, and integration with third-party platforms is built over REST APIs covering Salesforce, Microsoft Dynamics, OAuth2-protected enterprise systems, and digital asset management tools.

The client base spans healthcare, legal, cybersecurity, art logistics, travel, telecom, professional services, and nonprofit organizations, indicating an explicit multi-vertical strategy rather than single-sector specialization. The business model is project-based custom development sold B2B, with a substantial share of projects originating through white-label or implementation partnerships with Dutch design agencies — Evers + De Gier as the long-standing core partner, supplemented by Maaike Media, All This, and Ready for Take-off. Beyond services, the firm has productized selected integration components, notably a Gravity Forms / DocuSign connector and an ElasticSearch WordPress integration, creating modest reusable IP.

Following the December 2024 acquisition by Tabs & Spaces, the founder Jan Henkes departed the firm while front-end lead Jorn Henkes continued. Headcount at the time of acquisition was approximately 4 core members plus at least one freelance business manager; revenue and funding history are not disclosed. The firm competes in the Dutch micro-segment of specialized custom web agencies and competes against a fragmented long tail of similar boutiques rather than large systems integrators.

Name

Jannes & Mannes

Legal name

Jannes & Mannes

Website

https://jannesmannes.nl

Company type

Private

Founded year

2008

Operating status

Acquired

Headcount range

1–10 employees

Short description

Jannes & Mannes is a Dutch web agency building custom websites, portals, and data integrations for mid-market and enterprise clients using WordPress (headless), Laravel, Vue.js, and ElasticSearch. Acquired by Tabs & Spaces in December 2024.

Ownership category

akta.pro rank

Headquarters

HQ city

Den Haag

HQ country

Netherlands

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Web Development & Technical Realization: Full-service website development, technical implementation of designs provided by design agencies, and custom web application development. Revenue is generated through project-based engagements for websites, portals, and web applications. Pricing is quote-based, tailored to project scope.
2. Portal & Web Application Development: Development of custom portals (customer portals, partner portals, Dynamics portals), ERP/CRM integrations, and automated workflow systems. Revenue generated through project-based professional services engagements.
3. Data Integration & System Couplings: Custom API integrations connecting websites with CRM (Salesforce), accounting (Moneybird, Exact), ERP systems, and external platforms. Revenue through professional services engagements.
4. Website Maintenance & Managed Hosting: Ongoing website maintenance, managed dedicated server hosting, and monthly site maintenance services.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Jannes & Mannes is a Dutch web agency that delivers custom websites, web applications, and portals for mid-market and enterprise organizations. Its offering centers on five service lines: full-service website development, technical implementation for design agencies, business process digitization, Microsoft Dynamics-based portals, and custom data/API integrations connecting websites to CRM, ERP, and accounting systems. It acts as a technical implementation partner for design agencies and builds search-intensive, headless CMS, and Laravel-based applications for clients across healthcare, professional services, cultural, and commercial sectors.

Product overview

Jannes & Mannes is a Dutch web agency (webbureau) based in The Hague, now part of Tabs & Spaces in Rotterdam. Their service portfolio consists of five core offerings: Full Service Website Development (custom modern websites), Tech for Designers (technical implementation of visual designs), Business Process Optimization (digitized workflows and web integrations), Dynamics Portal (custom Microsoft Dynamics-based portals), and Data Integration (smart automated data integration). These services work together as a comprehensive digital solutions suite, with the Dynamics Portal and Data Integration offerings forming the backend/integration layer that connects third-party systems, while Full Service Development and Tech for Designers handle front-end creation. The company specializes in building custom web applications, portals, e-commerce solutions, and system integrations using modern frameworks like Laravel, Vue.js, and Nuxt.js.

Differentiator

Problem solved

Functional benefit

Products and services

• Full Service Website Development (Full service) Custom website development service delivering modern and functional websites tailored to client specifications and target audience needs, for mid-market and enterprise organizations across sectors such as luxury, healthcare, legal, art logistics, and hospitality.
• Tech for Designers (Tech voor designers) Technical implementation service that brings visual designs from design agencies to life, translating creative concepts into fully functional web solutions built with Laravel, Vue.js, Nuxt.js, and WordPress.
• Business Process Optimization (Bedrijfsprocessen optimaliseren) Digital workflow optimization and smart web integrations that help organizations accomplish more in less time through digitized business processes, automated workflows, and system couplings.
• Dynamics Portal Custom Microsoft Dynamics-based portal solution enabling colleagues, partners, and customers to work more efficiently with data from Microsoft Dynamics CRM/ERP systems, including partner customer portals, quote generation, and ticketing.
• Data Integration (Data integratie) Smart automated data integration services that combine data from different sources, establish connections, and make insights available to employees or partners for informed decision-making, including Salesforce, Moneybird, Exact, Microsoft Dynamics, ElasticSearch, WooCommerce, and other API couplings.
• Website Maintenance and Managed Hosting Ongoing website maintenance, managed dedicated server hosting, and monthly site maintenance services for clients whose websites Jannes & Mannes has built.

Quantifiable outcome

• Reduced downtime during large website refreshes using agile incremental methodology
• +3 more outcomes

Named customers16 records

Segments5 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration18 records

Feature4 records

Partnerships

Twelve partnerships are on record, tiered flagship / core, core and minor.

• Tabs & Spacesflagship / coreStrategic or Co-development PartnerTabs & Spaces acquired Jannes & Mannes in December 2024. The acquisition was announced in November 2024. Jorn Henkes (co-worker) continued at Tabs & Spaces, ensuring continuity for existing clients. The combined entity operates from Rotterdam.
• Evers + De GiercoreChannel Partner/ Reseller/ DistributorLong-standing design agency partnership. Evers + De Gier handles branding, visual design, and client acquisition while Jannes & Mannes provides technical implementation. Collaborated on projects including Helpdesk Digitale Zorg, Sjöcrona • van Stigt, Joore, Conference Compass, CBL, Club 25 Rotterdam, and Verborgen Tuinen.
• Maaike MediacoreChannel Partner/ Reseller/ DistributorDesign agency partnership for branding and design. Collaborated on Security Insight (The Hague Security Delta) and Cyberweerbaarheidscentrum Greenport projects.
• All This (Digital Design Bureau)minorChannel Partner/ Reseller/ DistributorDesign agency engaged by Hizkia for a new website. All This contracted Jannes & Mannes for technical implementation of the Hizkia art logistics website.
• Ready for Take-off (Design Agency)minorChannel Partner/ Reseller/ DistributorDesign agency partnership for the OLCO (maatschappelijk vastgoed) website project.
• Laravel (Framework)coreTechnology or IntegrationPrimary PHP framework used for custom web application development. Laravel is the most popular PHP framework for building web applications, providing routing, caching, security, database management, and user authentication features.
• Elastic (ElasticSearch)coreTechnology or IntegrationOpen-source search and analytics engine used for indexing and searching large datasets across multiple external sources. Used in Security Insight and Paardenarts projects for fast, intelligent content search.
• Microsoft (Dynamics, SSO, Azure)coreTechnology or IntegrationMicrosoft technologies used for Dynamics portals, Microsoft SSO integration, Microsoft Teams/Webex product integrations. Microsoft Dynamics CRM used as backend for PeterConnects portal. Microsoft SSO used for partner authentication.
• SalesforcecoreTechnology or IntegrationCRM platform integrated with client websites and administrative systems. Implemented for Helios Kampen (camps registration) with custom workflows, and for PeterConnects as the backend CRM for their partner portal. Salesforce non-profit program provides free licenses for qualifying organizations.
• MoneybirdcoreTechnology or IntegrationOnline accounting software for SMEs, integrated via API for automatic invoice generation from website registrations and CRM data. Developed custom integrations for WooCommerce webshops and Salesforce-to-Moneybird invoice automation.
• WordPresscoreTechnology or IntegrationPrimary CMS platform, used both traditionally and in headless mode (as REST API backend). WordPress powers content management for most client websites. Jannes & Mannes has extensive WordPress expertise spanning 10+ years.
• Nuxt.js / Vue.jscoreTechnology or IntegrationJavaScript framework used for building the headless front-end of websites. Nuxt.js adds server-side rendering for SEO optimization to Vue.js applications. Used for headless CMS implementations and fast, modern web applications.

Scale indicators5 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• Valtech: International digital transformation agency with deep Dutch operations covering strategy, experience engineering and platform/integration work. Overlaps with J&M on complex integration projects but at much larger scale.
• Dept Agency: Large Amsterdam-headquartered digital agency offering web, engineering, design and marketing at global scale. Relevant comparison as a Dutch-rooted incumbent operating across the same web/portal/integration categories J&M serves.
• Conclusion: Dutch IT services firm with multiple digital/engineering business units covering custom web/application development and integration. Relevant as a broader Dutch incumbent across similar service lines.

Direct peers

• Mirabeau (VML): Dutch digital agency building custom digital products and platforms for enterprise clients. Comparable to J&M on bespoke web-application development and integration-heavy engagements, but operating at larger scale.
• Incentro: Dutch digital consultancy focused on digital experience, integrations and platform engineering. Overlaps with J&M on custom web/portal development and system integration work for mid-market clients.
• Hoppinger: Dutch digital agency offering custom web development, portals and integrations for mid-market and enterprise clients. Closely comparable to J&M in scope (web/app + systems integration), Dutch footprint, and engineering-led delivery model.
• Building Blocks: Netherlands-based digital product agency building custom web platforms, portals, and integrations. Comparable to J&M in delivering Laravel/headless-CMS-style bespoke web applications for B2B clients.
• Active Collective (formerly Active Ants): Dutch full-service digital agency with strong e-commerce and platform integration practices. Overlaps with J&M on custom web/e-commerce builds and complex system couplings for mid-market clients.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights5 records

Customer concentration

• Facebookfacebook.com/jannesmannes
• LinkedInlinkedin.com/company/jannes-&-mannes
• Instagraminstagram.com/jannesmannes

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 Jannes & Mannes