Company lists · Data refreshed September 2026

Top 17 Web application testing companies based in the Netherlands

RevenueBase identified 47 company matches for web application testing companies associated with the Netherlands as of September 2026 and tracks 528 professional contacts across them, including 209 with verified work emails. Amsterdam is the largest hub.

This list covers company matches for web application testing companies associated with the Netherlands, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 22, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 22, 2026 How this list was built
47Companies
528Contacts tracked
209Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 17 largest web application testing companies based in the Netherlands

Ranked by team size
Top 17 of 47 company matches for web application testing companies based in the Netherlands, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 22, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchHelvoirt, NetherlandsHQ recorded Sep 22, 2026201-500155 contacts →

Exact match

“De software waarop miljoenen mensen vertrouwen, moet gewoon werken.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
2Exact matchHilversum, NetherlandsHQ recorded Sep 22, 202651-20076 contacts →

Exact match

“Inzicht geven in kwaliteit, zorgen voor goed functionerende IT oplossingen en optimaliseren van het ontwikkelproces.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
3Exact matchAmsterdam, NetherlandsHQ recorded Sep 22, 202651-20060 contacts →

Exact match

“Test your software, not your reputation!”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
4Exact match’s-hertogenbosch, NetherlandsHQ recorded Sep 22, 202611-5025 contacts →

Exact match

“PTWEE is specialized in software testing for enterprise software solutions such as SAP and Salesforce.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
5Exact matchLeiden, NetherlandsHQ recorded Sep 22, 202611-5018 contacts →

Exact match

“DongIT is an independent web security and web development company specializing in penetration testing, secure software development, and custom-built web applications.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
6Exact matchEindhoven, NetherlandsHQ recorded Sep 22, 202611-5011 contacts →

Exact match

“We are eager to use our expertise to create a digital world where information is secure and websites are reliable.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
7Exact matchBleskensgraaf, NetherlandsHQ recorded Sep 22, 20261-1010 contacts →

Exact match

“Cyber Cloud is een jong, ambitieus en innovatief bedrijf, gespecialiseerd in het uitvoeren van technische testen met als doel kwetsbaarheden in uw (web/mobiele)applicaties…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
8Exact match's-hertogenbosch, NetherlandsHQ recorded Sep 22, 202611-508 contacts →

Exact match

“Haystaq is een jong testbedrijf dat gespecialiseerd is in test automation.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
9Exact matchZoetermeer, NetherlandsHQ recorded Sep 22, 202611-506 contacts →

Exact match

“Meesters in ons vak!”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
10Exact matchVeenendaal, NetherlandsHQ recorded Sep 22, 20261-106 contacts →

Exact match

“SmartQA is een toonaangevende expert op het gebied van automatisering.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
11Exact matchZoetermeer, NetherlandsHQ recorded Sep 22, 202611-505 contacts →

Exact match

“Software for testing IT environments (Citrix, Microsoft and VMware) and applications from a user perspective.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
12Exact matchAmstelveen, NetherlandsHQ recorded Sep 22, 20261-104 contacts →

Exact match

“Qholix is an independent software testing consultancy.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
13Exact matchAlblasserdam, NetherlandsHQ recorded Sep 22, 20261-103 contacts →

Exact match

“Meer dan 17 jaar ervaring in Performance testen, Ketenmonitoring, Service Virtualisatie, Performance regie en Test management.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
14Exact matchVeenendaal, NetherlandsHQ recorded Sep 22, 2026201-5003 contacts →

Exact match

“We are Sofius.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
15Exact matchGroningen, NetherlandsHQ recorded Sep 22, 20261-103 contacts →

Exact match

“Bel me voor informatie”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
16Exact matchUtrecht, NetherlandsHQ recorded Sep 22, 20261-101 contacts →

Exact match

“As a test automation engineer with a strong background in software development, I have significant experience with.NET, Golang, Java, TypeScript, and JavaScript.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
17Exact matchVelsen Zuid, NetherlandsHQ recorded Sep 22, 20261-101 contacts →

Exact match

“Today's businesses require websites and applications with outstanding performance.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase

Showing 17 of 47 web application testing companies based in the Netherlands

See the full list, filter by size, metro and specialty, and access 209 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Web application testing companies based in the Netherlands at a glance

As of Sep 22, 2026
39.6%Verified-email coverage
11.2Average contacts per company
1-10Median size (employees)
19.1%Largest-city concentration · Amsterdam
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
30
11-50
12
51-200
3
201-500
2

Email recency for this list is measured worldwide rather than for Netherlands, so it is reported there. Company counts and contact totals on this page are exact for Netherlands, over 47 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the Netherlands whose business descriptions match “web application testing companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 209 professional contacts with verified work emails across the full matched dataset. 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 22, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “web application testing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many web application testing companies are there based in the Netherlands?

RevenueBase identified 47 company matches for web application testing companies associated with the Netherlands as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Cerios tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most web application testing companies?

Amsterdam leads with 9 company records, followed by Rotterdam (3) and Bb (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 209 professional contacts with verified work emails tracked across these 47 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 22, 2026.

Ready to reach these companies? Verified emails and direct dials for all 47 web application testing companies based in the Netherlands. Start with a free account, no credit card.

Download this list →

Related lists

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 SmartSearch, 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.