Company lists · Data refreshed September 2026

Top 25 Custom web-based software agencies based in Luxembourg

Name: Custom web-based software agencies based in Luxembourg
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 75 companies tracked

RevenueBase identified 75 custom web-based software agencies headquartered in Luxembourg as of September 2026 and tracks 812 professional contacts across them, including 278 with verified work emails and 38 with mobile numbers. Luxembourg is the largest hub.

This list covers custom web-based software agencies headquartered in Luxembourg, 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 24, 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 24, 2026 86% judged on-target in blind review

75Companies

812Contacts tracked

278Verified emails

38Mobile numbers

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The 25 largest custom web-based software agencies based in Luxembourg

Ranked by team size

Top 25 of 75 custom web-based software agencies based in Luxembourg, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to custom web-based software agencies: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Intech	Indirect evidence	Kayl, LuxembourgHQ checked Sep 24, 2026	51-200	313 contacts →
	Indirect evidence “InTech est une Entreprise de Services Numériques (ESN) luxembourgeoise fondée en 1995 et filiale du groupe POST Luxembourg.” Source: RevenueBase Database · checked Sep 24, 2026
2	Edda Luxembourg	Indirect evidence	Windhof, LuxembourgHQ checked Sep 24, 2026	51-200	100 contacts →
	Indirect evidence “Edda (formerly C-Services) is a company created in 2008 and since then has developed several expertise- Enterprise Content Management: Our SharePoint and Office 365 experts will…” Source: RevenueBase Database · checked Sep 24, 2026
3	CBC Informatique	Indirect evidence	Bascharage, LuxembourgHQ checked Sep 24, 2026	11-50	49 contacts →
	Indirect evidence “CBC Informatique: Your Trusted Technology Partner For over 34 years, CBC Informatique has been supporting Luxembourg businesses in their digital transformation.” Source: RevenueBase Database · checked Sep 24, 2026
4	Agile Partner	Indirect evidence	Kockelscheuer, LuxembourgHQ checked Sep 24, 2026	51-200	48 contacts →
	Indirect evidence “Depuis 2004, notre expertise en développement digital et en agilité accompagne nos clients dans la création de solutions logicielles sur mesure ainsi qu’un accompagnement des…” Source: RevenueBase Database · checked Sep 24, 2026
5	BMS Engineering Sàrl	Indirect evidence	Belvaux, LuxembourgHQ checked Sep 24, 2026	11-50	25 contacts →
	Indirect evidence “Acteur efficace et fiable dans les domaines de gestion informatique et des services en technologies de l’information, nous proposons des solutions durables et adaptées aux besoins…” Source: RevenueBase Database · checked Sep 24, 2026
6	Digitalize Advisory Certified B Corp	Indirect evidence	LuxembourgHQ checked Sep 24, 2026	11-50	24 contacts →
	Indirect evidence “Digitalize, certified B Corp™ and elected Best Place To Work!” Source: RevenueBase Database · checked Sep 24, 2026
7	Biac LOG	Indirect evidence	Steinfort, LuxembourgHQ checked Sep 24, 2026	11-50	15 contacts →
	Indirect evidence “BIAC Log est un bureau d’informatique spécialisé dans la conception d’applications de gestion stables et fiables qui s’adaptent aux spécificités et aux besoins de l’entreprise…” Source: RevenueBase Database · checked Sep 24, 2026
8	Lightbulb	Partial evidence	Lorentzweiler, LuxembourgHQ checked Sep 24, 2026	11-50	13 contacts →
	Partial evidence “We offer everything from websites and online shops to mobile apps and customized internal tools.” Source: RevenueBase Database · checked Sep 24, 2026
9	TAM TAM Luxembourg Alger	Partial evidence	Strassen, LuxembourgHQ checked Sep 24, 2026	11-50	12 contacts →
	Partial evidence “TAM TAM LUXEMBOURG ALGER est une agence web experte dans la conception de sites e-commerce, de sites web sur-mesures et dans l'élaboration de stratégies de communication.” Source: RevenueBase Database · checked Sep 24, 2026
10	DEEPY	Indirect evidence	Belvaux, LuxembourgHQ checked Sep 24, 2026	1-10	6 contacts →
	Indirect evidence “Deepy is a company based out of Luxembourg.” Source: RevenueBase Database · checked Sep 24, 2026
11	Agilifly Digital Transformations	Indirect evidence	LuxembourgHQ checked Sep 24, 2026	1-10	6 contacts →
	Indirect evidence “At Agilifly, we empower lean teams to focus on meaningful work by transforming how they manage processes, collaborate, and deliver results.” Source: RevenueBase Database · checked Sep 24, 2026
12	Hellomoon	Indirect evidence	Knaphoscheid, LuxembourgHQ checked Sep 24, 2026	1-10	6 contacts →
	Indirect evidence “Créateur de sites internet pour petites et grandes entreprises.” Source: RevenueBase Database · checked Sep 24, 2026
13	Apps.Lu By Kirepo	Indirect evidence	Ehnen, LuxembourgHQ checked Sep 24, 2026	11-50	5 contacts →
	Indirect evidence “At apps.lu, we are committed to providing comprehensive solutions tailored to meet the unique needs of your business.” Source: RevenueBase Database · checked Sep 24, 2026
14	Luxapps	Indirect evidence	Windhof, LuxembourgHQ checked Sep 24, 2026	1-10	5 contacts →
	Indirect evidence “LuxApps est une agence digitale spécialisée dans l'analyse et la création de solutions taillées sur-mesure pour votre entreprise.” Source: RevenueBase Database · checked Sep 24, 2026
15	Agilux	Indirect evidence	Pommerloch, LuxembourgHQ checked Sep 24, 2026	1-10	4 contacts →
	Indirect evidence “Agilux is a consulting company founded in 2008 in Belgium.” Source: RevenueBase Database · checked Sep 24, 2026
16	SPEAR	Partial evidence	Dudelange, LuxembourgHQ checked Sep 24, 2026	1-10	4 contacts →
	Partial evidence “At SPEAR, we are your trusted local partner for innovative software engineering.” Source: RevenueBase Database · checked Sep 24, 2026
17	Crok4it	Indirect evidence	LuxembourgHQ checked Sep 24, 2026	1-10	4 contacts →
	Indirect evidence “CROK4IT est société qui apporte conseil et solutions informatiques aux entreprises afin de les soutenir dans la conduite de leur transition digitale.” Source: RevenueBase Database · checked Sep 24, 2026
18	WEEL	Indirect evidence	LuxembourgHQ checked Sep 24, 2026	1-10	3 contacts →
	Indirect evidence “We prototype & develop your projects.” Source: RevenueBase Database · checked Sep 24, 2026
19	Time4digital S.À R.L	Partial evidence	Manternach, LuxembourgHQ checked Sep 24, 2026	1-10	3 contacts →
	Partial evidence “Specialized in agile development (DevOps), specific software solutions and mobile apps” Source: RevenueBase Database · checked Sep 24, 2026
20	Done Sarl	Indirect evidence	Bertrange, LuxembourgHQ checked Sep 24, 2026	11-50	3 contacts →
	Indirect evidence “Wir Webspezialisten von Done erstellen und verwalten maßgeschneiderte Webseiten als Service.” Source: RevenueBase Database · checked Sep 24, 2026
21	Intermediatic	Partial evidence	Eischen, LuxembourgHQ checked Sep 24, 2026	1-10	3 contacts →
	Partial evidence “INTERMEDIATIC Agence de communication web Conseil en communication : stratégie, présence en ligne, interfaces digitales professionnelles, sites web.” Source: RevenueBase Database · checked Sep 24, 2026
22	Agit Services SA	Indirect evidence	Oberpallen, LuxembourgHQ checked Sep 24, 2026	1-10	3 contacts →
	Indirect evidence “AGIT SERVICES was funded in 2007 by Alexandre Guytard, actual CEO and Project/Program Manager.” Source: RevenueBase Database · checked Sep 24, 2026
23	DEEV	Indirect evidence	LuxembourgHQ checked Sep 24, 2026	1-10	2 contacts →
	Indirect evidence “DEEV engineers digital systems that pay for themselves.” Source: RevenueBase Database · checked Sep 24, 2026
24	Procyon WEB Sarl-S	Partial evidence	LuxembourgHQ checked Sep 24, 2026	1-10	2 contacts →
	Partial evidence “IT Company in Luxembourg, providing consultation, bespoke web application development, payment integration and hosting services.” Source: RevenueBase Database · checked Sep 24, 2026
25	Fleetlab	Partial evidence	Differdange, LuxembourgHQ checked Sep 24, 2026	11-50	1 contacts →
	Partial evidence “We not only provide the software solution but also guarantee a perfect integration of our services into your business.” Source: RevenueBase Database · checked Sep 24, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: custom web-based software agencies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names custom web-based software agencies.
Partial evidence: Its own public description names part of custom web-based software agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name custom web-based software agencies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 75 custom web-based software agencies based in Luxembourg

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Custom web-based software agencies based in Luxembourg at a glance

As of Sep 24, 2026

34.2%Verified-email coverage

4.7%Mobile-number coverage

10.8Average contacts per company

1-10Median size (employees)

29.3%Largest-city concentration · Luxembourg

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Freshness & accuracy

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

Email last verified

Median 26.0d

2250–30

5231–60

161–90

090–180

0180+

Company record updated

Median 87.0d

00–30

19231–60

35761–90

23390–180

30180+

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 custom web-based software agencies, 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 Luxembourg whose own description of what they do matches “custom web-based software agencies”. 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 custom web-based software agencies), 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 custom web-based software agencies, and records with no verified work email. Companies headquartered outside Luxembourg 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, 278 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 24, 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 custom web-based software agencies, 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 custom web-based software agencies are there based in Luxembourg?

RevenueBase identified 75 custom web-based software agencies headquartered in Luxembourg 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?

Intech, headquartered in Kayl, tops this list with the largest team on record.

Which city has the most custom web-based software agencies?

Luxembourg leads with 22 headquartered companies, followed by Dudelange (4) and Steinfort (3).

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 278 verified decision-maker contacts tracked across these 75 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 24, 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.