Company lists · Data refreshed September 2026

Top 25 IT consulting managed services based in the Netherlands

RevenueBase identified 1,298 IT consulting managed services headquartered in the Netherlands as of September 2026 and tracks 13,341 professional contacts across them, including 5,083 with verified work emails and 994 with mobile numbers. Amsterdam is the largest hub.

This list covers IT consulting managed services headquartered in the Netherlands, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review
1,298Companies
13,341Contacts tracked
5,083Verified emails
994Mobile numbers
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The 25 largest IT consulting managed services based in the Netherlands

Ranked by team size
Top 25 of 1,298 IT consulting managed services based in the Netherlands, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to IT consulting managed services: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceHilversum, NetherlandsHQ checked Sep 27, 2026201-500659 contacts →

Indirect evidence

“SLTN is one of the largest privately-owned ICT companies in the Netherlands.”

Source: RevenueBase Database · checked Sep 27, 2026
2Partial evidenceRijswijk, NetherlandsHQ checked Sep 27, 2026n/a606 contacts →

Partial evidence

“UNO | LEADING YOUR DIGITAL JOURNEY UNO neemt als strategische IT partner jouw organisatie bij de hand en is de gids op weg naar jouw digitale toekomst.”

Source: RevenueBase Database · checked Sep 27, 2026
3Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 27, 2026501-1,000392 contacts →

Indirect evidence

“We're ITDS, a leading business consultancy, Tech & AI engineers outsourcing firm specializing in Software Development, Data Engineering, Cloud/DevOps Engineering, Cybersecurity…”

Source: RevenueBase Database · checked Sep 27, 2026
4Indirect evidenceGouda, NetherlandsHQ checked Sep 27, 2026201-500364 contacts →

Indirect evidence

“Experis helpt organisaties om technologie écht te laten werken.”

Source: RevenueBase Database · checked Sep 27, 2026
5Partial evidenceEindhoven, NetherlandsHQ checked Sep 27, 2026201-500212 contacts →

Partial evidence

“We support our customers to solve IT challenges and accelerate innovation.”

Source: RevenueBase Database · checked Sep 27, 2026
6Partial evidenceWeesp, NetherlandsHQ checked Sep 27, 2026n/a195 contacts →

Partial evidence

“IT moet flexibel, beheersbaar en betrouwbaar zijn en zich volledig kunnen herstellen bij een calamiteit.”

Source: RevenueBase Database · checked Sep 27, 2026
7Indirect evidenceCapelle Aan Den Ijssel, NetherlandsHQ checked Sep 27, 2026n/a183 contacts →

Indirect evidence

“We help organizations gain control over their digital foundation.”

Source: RevenueBase Database · checked Sep 27, 2026
8Partial evidenceVianen, NetherlandsHQ checked Sep 27, 2026201-500170 contacts →

Partial evidence

“Avit is a quality network integrator and managed security service provider that brings networks to optimal performance.”

Source: RevenueBase Database · checked Sep 27, 2026
9Partial evidenceLeiden, NetherlandsHQ checked Sep 27, 202651-200139 contacts →

Partial evidence

“FreshMinds is an IT Consultancy company with focus on Software, Data, Cloud- & Cyber Security Engineering.”

Source: RevenueBase Database · checked Sep 27, 2026
10Partial evidenceZwolle, NetherlandsHQ checked Sep 27, 202611-50139 contacts →

Partial evidence

“Seven Stars maakt de perfecte match in IT.”

Source: RevenueBase Database · checked Sep 27, 2026
11Strong evidenceReeuwijk, NetherlandsHQ checked Sep 27, 202651-200133 contacts →

Strong evidence

“We are the experts in proactive management of complex IT environments.”

Source: RevenueBase Database · checked Sep 27, 2026
12Partial evidenceThe Hague, NetherlandsHQ checked Sep 27, 202651-200131 contacts →

Partial evidence

“IT en OT worden steeds complexer.”

Source: RevenueBase Database · checked Sep 27, 2026
13Indirect evidenceRotterdam, NetherlandsHQ checked Sep 27, 202651-200130 contacts →

Indirect evidence

“Bij Intermax geloven we dat mensen zaken doen met mensen.”

Source: RevenueBase Database · checked Sep 27, 2026
14Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 27, 202651-200125 contacts →

Indirect evidence

“Quanza levert netwerkoplossingen en beheerdiensten voor organisaties met een Network infrastructuur waar elke seconde telt.”

Source: RevenueBase Database · checked Sep 27, 2026
15Indirect evidenceUtrecht, NetherlandsHQ checked Sep 27, 202651-200122 contacts →

Indirect evidence

“Leading Digital Innovation Strict helpt vanaf het strategische idee tot en met de succesvolle implementatie om het allerbeste uit digitale innovaties te halen en deze renderend in…”

Source: RevenueBase Database · checked Sep 27, 2026
16Partial evidenceBergschenhoek, NetherlandsHQ checked Sep 27, 202651-200114 contacts →

Partial evidence

“Al sinds 1992 helpt Promax haar klanten om succesvol te zijn met veilige, betrouwbare en intelligente IT-oplossingen.”

Source: RevenueBase Database · checked Sep 27, 2026
17Indirect evidenceAmstelveen, NetherlandsHQ checked Sep 27, 202651-200112 contacts →

Indirect evidence

“Fivespark is de nieuwe naam van het voormalige BTC.”

Source: RevenueBase Database · checked Sep 27, 2026
18Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 27, 202651-200110 contacts →

Indirect evidence

“At Luminis, we do things a little differently.”

Source: RevenueBase Database · checked Sep 27, 2026
19Partial evidenceNaarden, NetherlandsHQ checked Sep 27, 202651-20091 contacts →

Partial evidence

“Wij zijn neomax, een IT-dienstverlener die bedrijven helpt bij het vinden van ondersteuning voor jouw (tijdelijke) IT-uitdagingen op het gebied van support en beheer.”

Source: RevenueBase Database · checked Sep 27, 2026
20Partial evidenceWognum, NetherlandsHQ checked Sep 27, 202651-20089 contacts →

Partial evidence

“Bij NEXXT maken we IT tot een strategische kracht die organisaties laat groeien, innoveren en meebewegen met verandering.”

Source: RevenueBase Database · checked Sep 27, 2026
21Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 27, 202651-20080 contacts →

Indirect evidence

“We are your backbone for a secure and resilient digital infrastructure.”

Source: RevenueBase Database · checked Sep 27, 2026
22Indirect evidenceOdijk, NetherlandsHQ checked Sep 27, 202651-20074 contacts →

Indirect evidence

“Wie zijn we?”

Source: RevenueBase Database · checked Sep 27, 2026
23Indirect evidenceThe Hague, NetherlandsHQ checked Sep 27, 2026201-50072 contacts →

Indirect evidence

“Xalient ondersteunt toonaangevende organisaties bij het beschermen van hun meest waardevolle middelen: hun medewerkers, applicaties en data.”

Source: RevenueBase Database · checked Sep 27, 2026
24Strong evidenceUtrecht, NetherlandsHQ checked Sep 27, 202651-20071 contacts →

Strong evidence

“At GeekSoft - we provide high quality, IT-enabled services with diverse consulting services to improve business challenges and performance.”

Source: RevenueBase Database · checked Sep 27, 2026
25Indirect evidenceZoetermeer, NetherlandsHQ checked Sep 27, 202651-20065 contacts →

Indirect evidence

“Wij hellpen MKB+ bedrijven groeien.”

Source: RevenueBase Database · checked Sep 27, 2026

Showing 25 of 1,298 IT consulting managed services based in the Netherlands

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IT consulting managed services based in the Netherlands at a glance

As of Sep 27, 2026
38.1%Verified-email coverage
7.5%Mobile-number coverage
10.3Average contacts per company
1-10Median size (employees)
5.9%Largest-city concentration · Amsterdam
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
897
11-50
294
51-200
68
201-500
20
501-1,000
6
1,001-5,000
5
5,001-10,000
1
10001+
1

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 29.0d

Company record updated

Median 82.0d

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among IT consulting managed services, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in the Netherlands whose own description of what they do matches “IT consulting managed services”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names IT consulting managed services), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among IT consulting managed services, and records with no verified work email. Companies headquartered outside Netherlands are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 5,083 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 27, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names IT consulting managed services, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many IT consulting managed services are there based in the Netherlands?

RevenueBase identified 1,298 IT consulting managed services headquartered in the Netherlands as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

SLTN, headquartered in Nn, tops this list with the largest team on record.

Which city has the most IT consulting managed services?

Amsterdam leads with 76 headquartered companies, followed by Rotterdam (38) and Utrecht (33).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 5,083 verified decision-maker contacts tracked across these 1,298 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.