Company lists · Data refreshed September 2026

Top 25 Legacy system modernization consultants based in Switzerland

Name: Legacy system modernization consultants based in Switzerland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 214 companies tracked

RevenueBase identified 214 legacy system modernization consultants headquartered in Switzerland as of September 2026 and tracks 1,920 professional contacts across them, including 812 with verified work emails. Zurich is the largest hub.

This list covers legacy system modernization consultants headquartered in Switzerland, 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 20, 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 20, 2026 86% judged on-target in blind review

214Companies

1,920Contacts tracked

812Verified emails

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The 25 largest legacy system modernization consultants based in Switzerland

Ranked by team size

Top 25 of 214 legacy system modernization consultants based in Switzerland, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to legacy system modernization consultants: 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	Adesso Schweiz AG	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 20, 2026	501-1,000	425 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
2	DINA	Indirect evidence	Matran, SwitzerlandHQ checked Sep 20, 2026	201-500	153 contacts →
	Indirect evidence “Dina - Putting People at the Heart of Your Digital Success.” Source: RevenueBase Database · checked Sep 20, 2026
3	Lzlabs	Indirect evidence	Wallisellen, SwitzerlandHQ checked Sep 20, 2026	51-200	65 contacts →
	Indirect evidence “We love technology, but it’s what people do with it that really gets us excited.” Source: RevenueBase Database · checked Sep 20, 2026
4	Dplan AG	Partial evidence	Solothurn, SwitzerlandHQ checked Sep 20, 2026	51-200	58 contacts →
	Partial evidence “Die dplan AG ist ein etabliertes IT Beratungs- und Systemhaus für ganzheitliche IT Lösungen im Bereich Service & Support Ihrer IT Infrastruktur.” Source: RevenueBase Database · checked Sep 20, 2026
5	Freestar-Informatik AG	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 20, 2026	51-200	47 contacts →
	Indirect evidence “Ob Sie ein IT-Projekt planen und umfassend beim Projektmanagement beraten werden möchten, Ihre IT-Strategie neu festlegen wollen oder IT-Spezialisten benötigen…” Source: RevenueBase Database · checked Sep 20, 2026
6	Econis AG	Indirect evidence	Dietikon, SwitzerlandHQ checked Sep 20, 2026	51-200	45 contacts →
	Indirect evidence “IT Consulting - IT Services - IT Outsourcing - IT Consulting - IT Services - IT Outsourcing- IT Consulting - IT Services - IT Outsourcing- IT Consulting - IT Services - IT…” Source: RevenueBase Database · checked Sep 20, 2026
7	Inext Consulting	Indirect evidence	Plan-les-ouates, SwitzerlandHQ checked Sep 20, 2026	11-50	41 contacts →
	Indirect evidence “inext consulting is a consulting company specialized in digital transformation projects, collaborative solutions development and business specific developments using Microsoft…” Source: RevenueBase Database · checked Sep 20, 2026
8	NAG Informatik AG	Indirect evidence	Basel, SwitzerlandHQ checked Sep 20, 2026	11-50	39 contacts →
	Indirect evidence “Wir sind der agile Brückenbauer zu wertstiftenden und nachhaltigen IT-Lösungen – lokal verankert, mit internationaler Erfahrung.” Source: RevenueBase Database · checked Sep 20, 2026
9	Beltronic IT AG	Indirect evidence	Bülach, SwitzerlandHQ checked Sep 20, 2026	11-50	29 contacts →
	Indirect evidence “Eine moderne IT muss mehr als nur funktionieren – sie soll Ihre Geschäftsprozesse und Arbeitsabläufe optimieren, höchste Sicherheitsstandards erfüllen und Ihr Unternehmen…” Source: RevenueBase Database · checked Sep 20, 2026
10	IT Advanced Consulting SA	Indirect evidence	Le Grand-saconnex, SwitzerlandHQ checked Sep 20, 2026	51-200	28 contacts →
	Indirect evidence “IT Advanced Consulting est une société spécialisée dans les services et les solutions informatiques.” Source: RevenueBase Database · checked Sep 20, 2026
11	Netsafe AG	Indirect evidence	St. Gallen, SwitzerlandHQ checked Sep 20, 2026	11-50	27 contacts →
	Indirect evidence “We are an innovative Information, Technology and Services company located in St.” Source: RevenueBase Database · checked Sep 20, 2026
12	Unico Data AG	Indirect evidence	3110 Münsingen, SwitzerlandHQ checked Sep 20, 2026	51-200	27 contacts →
	Indirect evidence “Wir sind Berater, Anbieter und Betreuer von Informatik-Gesamtlösungen.” Source: RevenueBase Database · checked Sep 20, 2026
13	Delta Informatica SA	Indirect evidence	Mendrisio, SwitzerlandHQ checked Sep 20, 2026	11-50	25 contacts →
	Indirect evidence “Delta Informatica SA si propone come azienda qualificata nella consulenza, progettazione e realizzazione di soluzioni informatiche e all’integrazione di sistemi e tecnologie…” Source: RevenueBase Database · checked Sep 20, 2026
14	EDV Werke AG	Partial evidence	Baar, SwitzerlandHQ checked Sep 20, 2026	501-1,000	24 contacts →
	Partial evidence “EDV Werke is an enterprise transformation partner focused on SAP modernization, enterprise AI and data-driven operations.” Source: RevenueBase Database · checked Sep 20, 2026
15	Databoat AG	Indirect evidence	Wil, SwitzerlandHQ checked Sep 20, 2026	11-50	18 contacts →
	Indirect evidence “Für Bewegung in Verwaltungsrat und Geschäftsleitung.” Source: RevenueBase Database · checked Sep 20, 2026
16	Irix Software Engineering AG	Indirect evidence	Basel, SwitzerlandHQ checked Sep 20, 2026	11-50	17 contacts →
	Indirect evidence “Welcome to iRIX Software Engineering AG!” Source: RevenueBase Database · checked Sep 20, 2026
17	A E Informatik Gmbh	Indirect evidence	Winterthur, SwitzerlandHQ checked Sep 20, 2026	11-50	15 contacts →
	Indirect evidence “IT-Service mit Professionalität Die A+E Informatik GmbH bietet Ihnen zuverlässigen IT-Service von der neutralen Beratung, Konzeption und fachkundigen Implementierung bis zum…” Source: RevenueBase Database · checked Sep 20, 2026
18	Oneoverzero AG	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 20, 2026	11-50	14 contacts →
	Indirect evidence “OneOverZero and its employees have more than 100 man-years of experience in the design and implementation of complex, dependable, high-performance, enterprise-class IT solutions…” Source: RevenueBase Database · checked Sep 20, 2026
19	Integrate Informatik AG	Indirect evidence	Root, SwitzerlandHQ checked Sep 20, 2026	11-50	14 contacts →
	Indirect evidence “Ihr Entwicklungsteam ist oft voll ausgelastet und könnte Verstärkung gebrauchen?” Source: RevenueBase Database · checked Sep 20, 2026
20	In&out AG	Indirect evidence	Risch, SwitzerlandHQ checked Sep 20, 2026	11-50	13 contacts →
	Indirect evidence “Die In & Out AG erbringt fundierte und praktikable IT-Beratung und Engineering-Dienstleistung in den Bereichen Data Center, Continuity Management, Technologie & Plattformen und…” Source: RevenueBase Database · checked Sep 20, 2026
21	Cogify AG	Partial evidence	Root, SwitzerlandHQ checked Sep 20, 2026	11-50	13 contacts →
	Partial evidence “cogify is a Swiss technology partner helping companies turn business challenges into reliable digital systems.” Source: RevenueBase Database · checked Sep 20, 2026
22	CFI	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 20, 2026	51-200	11 contacts →
	Indirect evidence “CFI helps companies to implement digital business transformation and gain a competitive advantage, using modern global experience of effective IT management in terms of business…” Source: RevenueBase Database · checked Sep 20, 2026
23	Trutmann Informatik	Indirect evidence	Aesch, SwitzerlandHQ checked Sep 20, 2026	1-10	10 contacts →
	Indirect evidence “Trutmann Informatik operiert als kompatible und reibungslos funktionierende Schnittstelle zwischen Ihnen und Ihrer IT-Lösung.” Source: RevenueBase Database · checked Sep 20, 2026
24	MSS International AG	Partial evidence	Baar, SwitzerlandHQ checked Sep 20, 2026	11-50	10 contacts →
	Partial evidence “MSS is an IT Modernization Company helping organizations transform their applications and data across multi-platforms to achieve strategic business outcomes.” Source: RevenueBase Database · checked Sep 20, 2026
25	AS Informatik AG	Indirect evidence	Weinfelden, SwitzerlandHQ checked Sep 20, 2026	11-50	9 contacts →
	Indirect evidence “Die 1988 gegründete AS Informatik AG, mit Sitz in Weinfelden, hat sich auf umfassende IT-Gesamtlösungen spezialisiert und ist ISO-Zertifiziert.” Source: RevenueBase Database · checked Sep 20, 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: legacy system modernization consultants. 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 legacy system modernization consultants.
Partial evidence: Its own public description names part of legacy system modernization consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name legacy system modernization consultants. 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 214 legacy system modernization consultants based in Switzerland

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Legacy system modernization consultants based in Switzerland at a glance

As of Sep 20, 2026

42.3%Verified-email coverage

9.0Average contacts per company

1-10Median size (employees)

11.7%Largest-city concentration · Zurich

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

147

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured worldwide rather than for Switzerland, so it is reported there. Company counts and contact totals on this page are exact for Switzerland, over 214 companies.

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 legacy system modernization consultants, 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 Switzerland whose own description of what they do matches “legacy system modernization consultants”. 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 legacy system modernization consultants), 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 legacy system modernization consultants, and records with no verified work email. Companies headquartered outside Switzerland 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, 812 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 20, 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.

Legacy system modernization consultants by metro

Legacy system modernization consultants in Zurich25

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 legacy system modernization consultants, 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 legacy system modernization consultants are there based in Switzerland?

RevenueBase identified 214 legacy system modernization consultants headquartered in Switzerland 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?

Adesso Schweiz AG, headquartered in Zurich, tops this list with the largest team on record.

Which city has the most legacy system modernization consultants?

Zurich leads with 25 headquartered companies, followed by Bern (11) and Winterthur (8).

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 812 verified decision-maker contacts tracked across these 214 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 20, 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.