Company lists · Data refreshed September 2026
Top 25 Outsource IT companies based in Switzerland
RevenueBase identified 141 outsource IT companies headquartered in Switzerland as of September 2026 and tracks 1,229 professional contacts across them, including 562 with verified work emails. Zurich is the largest hub.
This list covers outsource IT 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 21, 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.
The 25 largest outsource IT companies based in Switzerland
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 168 contacts → | ||||
Indirect evidence “At FRISTA we see ourselves as a company which truly cares about our clients, people, and applies the latest technology to promote a sustainable and long-term culture of innovation…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 101 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 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 45 contacts → | ||||
Partial evidence “Software- und IT-Dienstleistungen die sofort Wirkung zeigen!” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 41 contacts → | ||||
Partial evidence “Our global team provides high quality outsourcing services for our international customers.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 41 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 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 37 contacts → | ||||
Indirect evidence “Votre partenaire Informatique pour l'excellence opérationnelle!” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 27 contacts → | ||||
Indirect evidence “We are an innovative Information, Technology and Services company located in St.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 23 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 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 21 contacts → | ||||
Partial evidence “Glaronia, Informatik, Computer, Support, Abacus, Entwicklung, PC, Server, IT, HP” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 16 contacts → | ||||
Partial evidence “Seit über 30 Jahren unterstützt die BWO Systems AG Schweizer Unternehmen dabei, ihre IT sicher, zuverlässig und zukunftsfähig aufzustellen.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 13 contacts → | ||||
Strong 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 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 13 contacts → | ||||
Partial evidence “Osy provides Business Process Outsourcing and Business Process Automation in one solution.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 13 contacts → | ||||
Indirect evidence “PartnerIT est une société de conception, d'édition et de mise en place de logiciels métiers ou de progiciels spécialisés dans tous les domaines de la gestion d'entreprise ainsi…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 11 contacts → | ||||
Indirect evidence “EcoLogic Ltd.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 11 contacts → | ||||
Indirect evidence “OMNE VOUS PROPOSE DES SERVICES EXPERTS DE CONSEIL ET D'EXTERNALISATION EN INFOGÉRANCE INFORMATIQUE, TÉLÉPHONIE ET CLOUD Les compétences spécialisées de notre réseau de partenaires…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 10 contacts → | ||||
Indirect evidence “Wir bieten Informatik-Dienstleistungen für Unternehmen.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 9 contacts → | ||||
Partial 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 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 8 contacts → | ||||
Indirect evidence “Die Kompetenz der semabit GmbH liegt bei Dienstleistungen aller Art im Informatiksektor.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
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: outsource IT 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 outsource IT companies.
- Partial evidence
- Its own public description names part of outsource IT companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name outsource IT 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 25 of 141 outsource IT companies based in Switzerland
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Outsource IT companies based in Switzerland at a glance
As of Sep 21, 2026Companies by employee count
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 141 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 outsource IT 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 “outsource IT 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 outsource IT 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 outsource IT 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, 562 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 21, 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 outsource IT 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 outsource IT companies are there based in Switzerland?
RevenueBase identified 141 outsource IT 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?
Frista, headquartered in Basel, tops this list with the largest team on record.
Which city has the most outsource IT companies?
Zurich leads with 13 headquartered companies, followed by Geneve (6) and Winterthur (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 562 verified decision-maker contacts tracked across these 141 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 21, 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.
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