Company lists · Data verified August 2026

Top 25 Custom software development firms based in Belgium

Name: Custom software development firms based in Belgium
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 448 companies tracked

There are 448 custom software development firms headquartered in Belgium (RevenueBase, August 2026). RevenueBase tracks 3,290 professional contacts across them, including 1,425 with verified work emails and 74 with mobile numbers. Brussels is the largest hub.

This list covers custom software development firms headquartered in Belgium, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

448Companies

3,290Contacts tracked

1,425Verified emails

74Mobile numbers

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The 25 largest custom software development firms based in Belgium

Ranked by team size

Top 25 of 448 custom software development firms based in Belgium, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	SFEIR	Bruxelles	501-1,000	916	359
2	Peopleware	Lier	51-200	75	34
3	Euricom	Mechelen	51-200	70	54
4	PHPRO	Hasselt	51-200	59	42
5	advance.io	Antwerp	51-200	54	4
6	Kunlabora	Leuven	51-200	51	40
7	DJM Digital	Vise	11-50	45	33
8	SERSO	Lummen	11-50	44	27
9	Linkare TI	n/a	51-200	43	34
10	Itenium	Mechelen	11-50	36	19
11	Endare	Ghent	11-50	29	18
12	PEPPS	n/a	11-50	28	16
13	Codana	Ledeberg	11-50	28	8
14	Iboris	Kalmthout	11-50	25	18
15	NIBOO	Watermael Boitsfort Bruxelles	11-50	25	6
16	Digitalize Advisory Certified B Corp	n/a	11-50	24	4
17	Collide	Herentals	11-50	23	20
18	Brainsolutions	n/a	11-50	21	13
19	Lodestar	Gent	11-50	20	1
20	Contribute NV	Edegem	51-200	19	12
21	Pulsar Consulting SA	Wavre	11-50	19	12
22	We ARE	Gent	11-50	19	10
23	Agifly	n/a	11-50	18	8
24	Encima I Intelligente Maatsoftware	Torhout	11-50	17	11
25	SELAS	Lille	11-50	17	6

Showing 25 of 448 custom software development firms based in Belgium

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Custom software development firms based in Belgium at a glance

As of Aug 28, 2026

1-10Median size (employees)

BrusselsLargest hub · 23 HQs

74Contacts with mobile numbers

5Emails re-verified in last 30 days

Companies by employee count

1-10

341

11-50

51-200

501-1,000

1,001-5,000

Custom software development firms by metro

Metro	Companies
Custom software development firms in Brussels	23
Custom software development firms in Bruxelles	13
Custom software development firms in Gent	10
Custom software development firms in Ghent	9
Custom software development firms in Mechelen	8
Custom software development firms in Leuven	7
Custom software development firms in Liege	6

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “custom software development firms”, with match quality audited by blind human judging, and headquartered in Belgium.
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: Contact records re-verify on a rolling cadence; 5 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many custom software development firms are there based in Belgium?

There are 448 custom software development firms headquartered in Belgium as of August 2026 (RevenueBase).

What is the largest company on this list?

SFEIR, headquartered in Bruxelles, tops this list with the largest team on record.

Which city has the most custom software development firms?

Brussels leads with 23 headquartered companies, followed by Bruxelles (13) and Gent (10).

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 1,425 verified decision-maker contacts tracked across these 448 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.