Company lists · Data refreshed September 2026

Top 23 IT outsourcing companies based in Switzerland

Name: IT outsourcing companies based in Switzerland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 151 companies tracked

RevenueBase identified 151 IT outsourcing companies headquartered in Switzerland as of September 2026 and tracks 3,320 professional contacts across them, including 1,474 with verified work emails and 139 with mobile numbers. Zurich is the largest hub.

This list covers IT outsourcing companies 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 4, 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 4, 2026 86% judged on-target in blind review

151Companies

3,320Contacts tracked

1,474Verified emails

139Mobile numbers

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The 23 largest IT outsourcing companies based in Switzerland

Ranked by team size

Top 23 of 151 IT outsourcing companies based in Switzerland, ranked by team size, largest first. Data refreshed Sep 4, 2026. RevenueBase Smart Search rates how each company's information relates to IT outsourcing companies: 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	API SA	Indirect evidence	Lausanne 10, SwitzerlandHQ checked Sep 4, 2026	n/a	667 contacts →
	Indirect evidence “Fondée en 1990 par Maxime Borros, chairman, et actuellement dirigé par Nathanel Borros, CEO et 2ème génération, API est une entreprise de services et solutions informatiques.” Source: RevenueBase Database · checked Sep 4, 2026
2	DBI Services	Partial evidence	Delémont, SwitzerlandHQ checked Sep 4, 2026	51-200	102 contacts →
	Partial evidence “Founded in 2010, the IT services company dbi services is now a leader in the management of information systems with its team of experienced specialists.” Source: RevenueBase Database · checked Sep 4, 2026
3	Dplan AG	Partial evidence	Solothurn, SwitzerlandHQ checked Sep 4, 2026	51-200	57 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 4, 2026
4	Allgeier Schweiz AG	Indirect evidence	Thalwil, SwitzerlandHQ checked Sep 4, 2026	51-200	49 contacts →
	Indirect evidence “Empowering You Mit Leidenschaft, Wissen und Technologie ermöglichen wir es, Menschen und Organisationen, ihre Arbeitswelt und Prozesse zu verbessern und sich weiter zu entwickeln…” Source: RevenueBase Database · checked Sep 4, 2026
5	Econis AG	Strong evidence	Dietikon, SwitzerlandHQ checked Sep 4, 2026	51-200	45 contacts →
	Strong 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 4, 2026
6	Softec AG	Partial evidence	Steinhausen, SwitzerlandHQ checked Sep 4, 2026	11-50	44 contacts →
	Partial evidence “Software- und IT-Dienstleistungen die sofort Wirkung zeigen!” Source: RevenueBase Database · checked Sep 4, 2026
7	Data Conversion Service SA	Indirect evidence	Petit-Lancy, SwitzerlandHQ checked Sep 4, 2026	51-200	40 contacts →
	Indirect evidence “Data Conversion Service SA, referred to henceforth as “DCS” is a service company based in Geneva, Switzerland, since 1973.” Source: RevenueBase Database · checked Sep 4, 2026
8	Overdata Sagl	Partial evidence	Chiasso, SwitzerlandHQ checked Sep 4, 2026	51-200	37 contacts →
	Partial evidence “Overdata è una società di information Technology con sede a Chiasso che eroga servizi in ambito di consulenza IT e Business Process Management, offrendo le proprie competenze per…” Source: RevenueBase Database · checked Sep 4, 2026
9	groupe.id	Indirect evidence	La Chaux-De-Fonds, SwitzerlandHQ checked Sep 4, 2026	11-50	37 contacts →
	Indirect evidence “Votre partenaire Informatique pour l'excellence opérationnelle!” Source: RevenueBase Database · checked Sep 4, 2026
10	IMS Informatik UND Management Service AG	Indirect evidence	Ittigen, SwitzerlandHQ checked Sep 4, 2026	11-50	31 contacts →
	Indirect evidence “Ihr Partner für individuelle Informatiklösungen Als führendes Individualsoftwareunternehmen in der Region Bern sind wir bestrebt, komplexe Problemstellungen mit Hilfe modernster…” Source: RevenueBase Database · checked Sep 4, 2026
11	4it Solutions	Indirect evidence	Gravesano, SwitzerlandHQ checked Sep 4, 2026	11-50	31 contacts →
	Indirect evidence “Dal 2008 forniamo soluzioni informatiche di alto profilo ad aziende del settore pubblico e privato del territorio, affermandoci come uno dei principali partner tecnologici in…” Source: RevenueBase Database · checked Sep 4, 2026
12	Evok - Altern8 SA	Strong evidence	Fribourg, SwitzerlandHQ checked Sep 4, 2026	11-50	29 contacts →
	Strong evidence “Founded in 1998, EVOK developed over the years competencies and specializations in various activities like network security, system maintenance, IT outsourcing or ERP integration…” Source: RevenueBase Database · checked Sep 4, 2026
13	Netsafe AG	Indirect evidence	St. Gallen, SwitzerlandHQ checked Sep 4, 2026	11-50	27 contacts →
	Indirect evidence “We are an innovative Information, Technology and Services company located in St.” Source: RevenueBase Database · checked Sep 4, 2026
14	Xware Gmbh	Partial evidence	Sursee, SwitzerlandHQ checked Sep 4, 2026	11-50	22 contacts →
	Partial evidence “Effiziente Wege, dynamisches Handeln: Uns Mitarbeiter von XWare verbindet die Leidenschaft für IT-Lösungen, die die Geschäftsprozesse unserer Kunden tatsächlich verbessern.” Source: RevenueBase Database · checked Sep 4, 2026
15	Aark Tech Solutions Gmbh	Indirect evidence	Regensdorf, SwitzerlandHQ checked Sep 4, 2026	11-50	18 contacts →
	Indirect evidence “AarkTech specializes in Software Development and Consulting Services across the industries.” Source: RevenueBase Database · checked Sep 4, 2026
16	BWO Systems AG	Partial evidence	SwitzerlandHQ checked Sep 4, 2026	51-200	17 contacts →
	Partial evidence “IT-Services mit individuellen Lösungen Starke Unternehmen brauchen eine starke IT-Generalunternehmung.” Source: RevenueBase Database · checked Sep 4, 2026
17	Irix Software Engineering AG	Indirect evidence	Basel, SwitzerlandHQ checked Sep 4, 2026	11-50	17 contacts →
	Indirect evidence “Welcome to iRIX Software Engineering AG!” Source: RevenueBase Database · checked Sep 4, 2026
18	A E Informatik Gmbh	Partial evidence	Winterthur, SwitzerlandHQ checked Sep 4, 2026	11-50	15 contacts →
	Partial 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 4, 2026
19	Best Vision Group	Partial evidence	Lugano, SwitzerlandHQ checked Sep 4, 2026	201-500	14 contacts →
	Partial evidence “Best Vision Group è un gruppo internazionale che opera nella produzione di soluzioni software innovative, nella fornitura di servizi di outsourcing e di consulenza, costituita da…” Source: RevenueBase Database · checked Sep 4, 2026
20	Reber Informatik Engineering Gmbh	Partial evidence	Munsingen, SwitzerlandHQ checked Sep 4, 2026	11-50	13 contacts →
	Partial evidence “From specification and software development to implementation and maintenance, we work on your IT projects with great competence and passion.” Source: RevenueBase Database · checked Sep 4, 2026
21	Cogify AG	Partial evidence	Root, SwitzerlandHQ checked Sep 4, 2026	11-50	13 contacts →
	Partial evidence “From ideation, through consulting, to implementation and maintenance of your IT solutions.” Source: RevenueBase Database · checked Sep 4, 2026
22	Psideo	Partial evidence	Plan-les-ouates, SwitzerlandHQ checked Sep 4, 2026	11-50	13 contacts →
	Partial evidence “Based in Geneva (HQ) and Singapore, operating in more than 30 countries, PSiDEO provides a wide range of premium outsourced IT services to global customers, as well as the…” Source: RevenueBase Database · checked Sep 4, 2026
23	Apposite	Partial evidence	Ecublens, SwitzerlandHQ checked Sep 4, 2026	11-50	12 contacts →
	Partial evidence “SERVICES IT Les compétences sont les outils, mais leur véritable pouvoir se révèle dans un partenariat intelligent.🧠 Apposite s’est pensé, non pas comme un prestataire, mais comme…” Source: RevenueBase Database · checked Sep 4, 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: IT outsourcing companies. 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 IT outsourcing companies.
Partial evidence: Its own public description names part of IT outsourcing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name IT outsourcing companies. 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 23 of 151 IT outsourcing companies based in Switzerland

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IT outsourcing companies based in Switzerland at a glance

As of Sep 4, 2026

44.4%Verified-email coverage

4.2%Mobile-number coverage

22.0Average contacts per company

11-50Median size (employees)

7.3%Largest-city concentration · Zurich

Sep 4, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

00–30

11531–60

79361–90

50690–180

60180+

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 IT outsourcing companies, 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 “IT outsourcing companies”. 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 IT outsourcing companies), 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 IT outsourcing companies, 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, 1,474 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 4, 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 IT outsourcing companies, 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 IT outsourcing companies are there based in Switzerland?

RevenueBase identified 151 IT outsourcing companies 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?

API SA, headquartered in Lausanne, tops this list with the largest team on record.

Which city has the most IT outsourcing companies?

Zurich leads with 11 headquartered companies, followed by Bern (4) and Geneve (4).

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 1,474 verified decision-maker contacts tracked across these 151 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 4, 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.