Company lists · Data refreshed November 2026

Top 18 Legacy system modernization services based in Belgium

RevenueBase identified 53 company matches for legacy system modernization services associated with Belgium as of November 2026 and tracks 1,457 professional contacts across them, including 412 with verified work emails. Brussels is the largest hub.

This list covers company matches for legacy system modernization services associated with Belgium, 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 November 6, 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 Nov 6, 2026 How this list was built
53Companies
1,457Contacts tracked
412Verified emails
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The 18 largest legacy system modernization services based in Belgium

Ranked by team size
Top 18 of 53 company matches for legacy system modernization services based in Belgium, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchLochristi, BelgiumHQ recorded Nov 6, 202651-200520 contacts →

Exact match

“We nemen moderne ondernemingen alle IT-stress rond software en infrastructuur uit handen gaande van advies, over implementatie tot onderhoud.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchKontich, BelgiumHQ recorded Nov 6, 2026201-500351 contacts →

Exact match

“Cheops is an industry-leading provider of IT & Business Technology Services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchVilvoorde, BelgiumHQ recorded Nov 6, 2026201-500122 contacts →

Exact match

“We are the point of reference in the IT market for the pioneering companies ready to leverage new technological & digital projects, to embrace innovation and to evolve their…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchBrussels, BelgiumHQ recorded Nov 6, 202651-20063 contacts →

Exact match

“Empower your business with seamless IT Modernization, fortify your future with cutting-edge Cybersecurity, and unlock potential with AI and Data-driven insights.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchHasselt, BelgiumHQ recorded Nov 6, 202651-20063 contacts →

Exact match

“WE FIX-IT, established in 2010, is a consulting company specializing in IT and Technical Services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchZaventem, BelgiumHQ recorded Nov 6, 202611-5037 contacts →

Exact match

“Mission-critical software for European enterprises.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchChaineux, BelgiumHQ recorded Nov 6, 202611-5022 contacts →

Exact match

“Altiore, un seul partenaire pour tous vos besoins informatiques.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchSint-Niklaas, BelgiumHQ recorded Nov 6, 202651-20020 contacts →

Exact match

“SDP is an IT company that has been a major player in the international market for almost 40 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchVivegnis, BelgiumHQ recorded Nov 6, 20261-1018 contacts →

Exact match

“Plus de 20 ans d’expérience digitale au cœur d’une famille Wallonne.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchBrussels, BelgiumHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“BIG WATER CONSULTING (BWC), we have been helping clients deliver successful projects.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchKontich, BelgiumHQ recorded Nov 6, 202611-5017 contacts →

Exact match

“Anubex was a software company providing core tools, know-how, and support for complex mainframe modernization and migration projects.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchKortrijk, BelgiumHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“Hoe zorg je dat software niet alleen vandaag werkt, maar ook klaar is voor wat morgen brengt?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchBaelen, BelgiumHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“At EAC, we see our mission as:"Enabling our clients to realize the full potential of the digital by providing innovative and integrated ERP and IT infrastructure solutions".”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchEsneux, BelgiumHQ recorded Nov 6, 20261-107 contacts →

Exact match

“Société de services en informatique.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchLiège, BelgiumHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Our company serves as a trusted partner in digital transformation, offering comprehensive services in web development, IT consulting, and custom software development.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchLiège, BelgiumHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Qui sommes-nous?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBrussels, BelgiumHQ recorded Nov 6, 20261-102 contacts →

Exact match

“At JANI & Co, we deliver IT services with a focus on seamless cloud migration and smart application integration.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchAntwerp, BelgiumHQ recorded Nov 6, 20261-101 contacts →

Exact match

“Innovating at the intersection of technology and transformation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 18 of 53 legacy system modernization services based in Belgium

See the full list, filter by size, metro and specialty, and access 412 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Legacy system modernization services based in Belgium at a glance

As of Nov 6, 2026
28.3%Verified-email coverage
27.5Average contacts per company
1-10Median size (employees)
13.2%Largest-city concentration · Brussels
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
29
11-50
15
51-200
5
201-500
3

Email recency for this list is measured worldwide rather than for Belgium, so it is reported there. Company counts and contact totals on this page are exact for Belgium, over 53 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 Belgium whose business descriptions match “legacy system modernization services” 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 412 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 November 6, 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 “legacy system modernization services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many legacy system modernization services are there based in Belgium?

RevenueBase identified 53 company matches for legacy system modernization services associated with Belgium as of November 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?

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

Which city has the most legacy system modernization services?

Brussels leads with 7 company records, followed by Kontich (4) and Liege (3).

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 412 professional contacts with verified work emails tracked across these 53 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 November 6, 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 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.