Company lists · Data refreshed September 2026

Top 25 Language companies based in Switzerland

RevenueBase identified 156 language companies headquartered in Switzerland as of September 2026 and tracks 4,742 professional contacts across them, including 428 with verified work emails. Zurich is the largest hub.

This list covers language 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review
156Companies
4,742Contacts tracked
428Verified emails
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The 25 largest language companies based in Switzerland

Ranked by team size
Top 25 of 156 language companies based in Switzerland, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to language 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceGlattbrugg-zurich, SwitzerlandHQ checked Sep 21, 2026501-1,000186 contacts →

Indirect evidence

“CLS Communication is a subsidiary of Lionbridge, the largest localization and translation services provider in the world.”

Source: RevenueBase Database · checked Sep 21, 2026
2Strong evidenceZürich, SwitzerlandHQ checked Sep 21, 202651-200156 contacts →

Strong evidence

“Supertext is an AI-based full-service language service provider with offices in Zurich and Berlin.”

Source: RevenueBase Database · checked Sep 21, 2026
3Strong evidenceGenève, SwitzerlandHQ checked Sep 21, 202651-20040 contacts →

Strong evidence

“Forte de 50 ans d'expérience dans le domaine de la formation linguistique, ASC Languages propose des cours sur mesure à une longue liste de clients tous plus exigeants les uns que…”

Source: RevenueBase Database · checked Sep 21, 2026
4Indirect evidenceBuchs Sg, SwitzerlandHQ checked Sep 21, 202651-20036 contacts →

Indirect evidence

“Diction is a leading provider of multilingual content services.”

Source: RevenueBase Database · checked Sep 21, 2026
5Indirect evidenceSankt Gallen, SwitzerlandHQ checked Sep 21, 202651-20035 contacts →

Indirect evidence

“HDS Handels- und Dolmetscherschule St.”

Source: RevenueBase Database · checked Sep 21, 2026
6Indirect evidenceStadtkreis 9, SwitzerlandHQ checked Sep 21, 202651-20026 contacts →

Indirect evidence

“Let’s Talk Business.”

Source: RevenueBase Database · checked Sep 21, 2026
7Indirect evidenceBasel, SwitzerlandHQ checked Sep 21, 20261-1023 contacts →

Indirect evidence

“Traductor is a translation and localization company based out of Zwingerstrasse 12, Basel, Switzerland.”

Source: RevenueBase Database · checked Sep 21, 2026
8Strong evidenceGenève, SwitzerlandHQ checked Sep 21, 202611-5022 contacts →

Strong evidence

“We offer language and communication courses with expert instructors and an innovative method.”

Source: RevenueBase Database · checked Sep 21, 2026
9Indirect evidenceGlattbrugg, SwitzerlandHQ checked Sep 21, 2026n/a20 contacts →

Indirect evidence

“Lionbridge partners with brands to break barriers and build bridges all over the world.”

Source: RevenueBase Database · checked Sep 21, 2026
10Indirect evidenceBaden, SwitzerlandHQ checked Sep 21, 202611-5013 contacts →

Indirect evidence

“SwissGlobal is more than just a translation company.”

Source: RevenueBase Database · checked Sep 21, 2026
11Strong evidenceBaden, SwitzerlandHQ checked Sep 21, 202651-20013 contacts →

Strong evidence

“With more than 20 years' experience in teaching languages and an average of 600 courses a year, TLC is the right partner for language courses which are individualised, practical…”

Source: RevenueBase Database · checked Sep 21, 2026
12Indirect evidenceZürich, SwitzerlandHQ checked Sep 21, 2026201-50012 contacts →

Indirect evidence

“Melden Sie sich hier für unseren Newsletter an, und wir informieren Sie monatlich über: Neuigkeiten rund um Sprachen, geben Ihnen Einblick in unsere Welt des Sports und stellen…”

Source: RevenueBase Database · checked Sep 21, 2026
13Strong evidenceZurich, SwitzerlandHQ checked Sep 21, 202611-5012 contacts →

Strong evidence

LanguageMasters sind eine Sprachschule und ein Übersetzungsbüro im Zentrum von Zürich.”

Source: RevenueBase Database · checked Sep 21, 2026
14Strong evidenceStadtkreis 1 Altstadt, SwitzerlandHQ checked Sep 21, 202611-5012 contacts →

Strong evidence

Language lessons at a time and place convenient for you.”

Source: RevenueBase Database · checked Sep 21, 2026
15Indirect evidenceSt. Gallen, SwitzerlandHQ checked Sep 21, 202651-20011 contacts →

Indirect evidence

“Wir veranstalten Sprachreisen weltweit und mit unserer eigenen Sprachschule unterrichten wir Sprachkurse für 30 Sprachen in Zürich.”

Source: RevenueBase Database · checked Sep 21, 2026
16Strong evidenceMeyrin, SwitzerlandHQ checked Sep 21, 202611-5011 contacts →

Strong evidence

“PROPER Languages SA is a business language Centre.”

Source: RevenueBase Database · checked Sep 21, 2026
17Indirect evidenceZurich, SwitzerlandHQ checked Sep 21, 202611-5010 contacts →

Indirect evidence

“Outstanding linguistic quality Translingua is the Swiss translation company that offers you a wide range of advantages from a single source: We offer the perfect combination of…”

Source: RevenueBase Database · checked Sep 21, 2026
18Indirect evidenceLugano, SwitzerlandHQ checked Sep 21, 20261-109 contacts →

Indirect evidence

“Imparare inglese da adulti è completamente diverso.”

Source: RevenueBase Database · checked Sep 21, 2026
19Strong evidenceZurich, SwitzerlandHQ checked Sep 21, 202611-509 contacts →

Strong evidence

“At Pro Linguis we breath and love languages, and have done so since 1955, when we organised our first language travel to Barcelona.”

Source: RevenueBase Database · checked Sep 21, 2026
20Indirect evidenceSeefeld, SwitzerlandHQ checked Sep 21, 202611-508 contacts →

Indirect evidence

“Der Grundstein für die comtexto AG wurde 1978 mit der Gründung als Übersetzungsbüro gelegt.”

Source: RevenueBase Database · checked Sep 21, 2026
21Indirect evidenceBern, SwitzerlandHQ checked Sep 21, 20261-108 contacts →

Indirect evidence

“alma steht für Übersetzungen, die mehr leisten: Verständlichkeit, Tiefe, Stil.”

Source: RevenueBase Database · checked Sep 21, 2026
22Indirect evidenceLugano, SwitzerlandHQ checked Sep 21, 202611-507 contacts →

Indirect evidence

“Benvenuti in questa pagina di presentazione di TI Traduce di Lugano!”

Source: RevenueBase Database · checked Sep 21, 2026
23Indirect evidenceWohlen, SwitzerlandHQ checked Sep 21, 20261-107 contacts →

Indirect evidence

“Die BBS Office GmbH bietet Informatikkurse, Übersetzungen und Supportdienstleistungen an für Firmen und Private.”

Source: RevenueBase Database · checked Sep 21, 2026
24Indirect evidenceSion, SwitzerlandHQ checked Sep 21, 202611-507 contacts →

Indirect evidence

“La meilleure qualité en 11 Langues!”

Source: RevenueBase Database · checked Sep 21, 2026
25Strong evidenceMorges - Préverenges, SwitzerlandHQ checked Sep 21, 202611-506 contacts →

Strong evidence

“Leman Language Services (LLS) is a Swiss-based communication and language agency.”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 25 of 156 language companies based in Switzerland

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Language companies based in Switzerland at a glance

As of Sep 21, 2026
9.0%Verified-email coverage
30.4Average contacts per company
1-10Median size (employees)
19.9%Largest-city concentration · Zurich
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
82
11-50
41
51-200
18
201-500
6
501-1,000
2
1,001-5,000
2
5,001-10,000
1
10001+
2

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 156 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 language 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 “language 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 language 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 language 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, 428 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.

Language companies by metro

  • Language companies in Zurich31

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 language 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 language companies are there based in Switzerland?

RevenueBase identified 156 language 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?

CLS Communication, headquartered in Zurich, tops this list with the largest team on record.

Which city has the most language companies?

Zurich leads with 31 headquartered companies, followed by Lugano (12) and Lausanne (9).

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 428 verified decision-maker contacts tracked across these 156 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.