Company lists · Data refreshed September 2026

Top 25 Customer service language training firms worldwide

RevenueBase identified 7,324 company matches for customer service language training firms worldwide as of September 2026 and tracks 79,683 professional contacts across them, including 7,351 with verified work emails. Brazil is the largest market and Sao Paulo the largest hub.

This list covers company matches for customer service language training firms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 19, 2026. Country and city lists for customer service language training firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 19, 2026 How this list was built
7,324Companies
79,683Contacts tracked
7,351Verified emails
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The 25 largest customer service language training firms worldwide

Ranked by team size
Top 25 of 7,324 company matches for customer service language training firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMonterey, CA, United StatesHQ recorded Sep 19, 202610001+6,440 contacts →

Exact match

“LanguageLine Solutions is the world’s leading language solutions company.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2Exact matchPrinceton, NJ, United StatesHQ recorded Sep 19, 20265,001-10,0003,273 contacts →

Exact match

“Berlitz Corporation is a world-leading language and cultural training provider with over 140 years of experience.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchHorsham, PA, United StatesHQ recorded Sep 19, 2026n/a1,737 contacts →

Exact match

“Established in 1991, LSA’s mission is to help people and companies survive and thrive in a global environment.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchTroy, MI, United StatesHQ recorded Sep 19, 2026n/a915 contacts →

Exact match

“Global LT has been a leading expert in Language Solutions and Expatriate Services since 1979.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchWinter Haven, United StatesHQ recorded Sep 19, 2026n/a617 contacts →

Exact match

“Multilingual Interpreters and Translators, a language service and business solutions Company based in Winter Haven, Florida.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchCologne, GermanyHQ recorded Sep 19, 2026201-500609 contacts →

Exact match

“goFLUENT acquired the assets of Learnship Networks GmbH on December 1st, 2025.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchLa Hulpe, BelgiumHQ recorded Sep 19, 2026n/a553 contacts →

Exact match

“Multilingual Services & Language Asset Management Solutions Production caters high standard multilingual services to a large number of smaller and larger companies in a wide array…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchMadrid, SpainHQ recorded Sep 19, 202651-200553 contacts →

Exact match

“La vida no es listen and repeat’.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9Exact matchMagdalena Del Mar, United StatesHQ recorded Sep 19, 2026201-500550 contacts →

Exact match

“At Bilingual, we are your gateway to seamless global communication.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchFrankfurt Am Main, GermanyHQ recorded Sep 19, 2026201-500537 contacts →

Exact match

“Effective, practical and always with maximum flexibility: Berlitz is your partner for foreign languages, intercultural know-how, and business skills.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchStockholm, SwedenHQ recorded Sep 19, 2026201-500531 contacts →

Exact match

“Semantix is the Nordic region’s leading communication partner for multilingual services, working with a worldwide network of thousands of language specialists.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12Exact matchAmsterdam, NetherlandsHQ recorded Sep 19, 20261,001-5,000496 contacts →

Exact match

“At Cygnific, we specialise in providing premium customer service solutions for leading brands such as KLM, Air France, Rituals, and Sunweb.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchMadrid, SpainHQ recorded Sep 19, 2026201-500407 contacts →

Exact match

“Vaughan Systems is a leading provider of English language training in Spain.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Sep 19, 202651-200377 contacts →

Exact match

“Busuu is an online learning platform delivering internationally recognised professional language courses to corporations and businesses across the world.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchVilleurbanne, FranceHQ recorded Sep 19, 202651-200373 contacts →

Exact match

“Adecco Formation, filiale du Groupe Adecco, est un acteur majeur de la formation professionnelle en France.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16Exact matchSingaporeHQ recorded Sep 19, 202651-200356 contacts →

Exact match

“Andovar is your gateway to global success, offering a comprehensive suite of custom language data services and localization solutions.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchShanghai, ChinaHQ recorded Sep 19, 20261,001-5,000338 contacts →

Exact match

“Wall Street English is the premier provider of English instruction for individuals and corporate clients around the world.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchPlano, TX, United StatesHQ recorded Sep 19, 2026501-1,000330 contacts →

Exact match

“Akorbi has been acquired by Propio Language Services.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Sep 19, 202610001+282 contacts →

Exact match

“EF Corporate Learning is the world’s first and largest corporate language training provider.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchArlington, VA, United StatesHQ recorded Sep 19, 2026201-500276 contacts →

Exact match

“Established in 1985, Diplomatic Language Services provides exceptional language training, translation, interpretation, and linguist testing to federal and state government…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact match新宿区, JapanHQ recorded Sep 19, 20261,001-5,000273 contacts →

Exact match

“Berlitz is the world's premier provider of language training and intercultural services, with a footprint in more than 70 countries.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 19, 2026201-500233 contacts →

Exact match

“Linguarama provides effective, tailored Language Training courses in English and Foreign Languages for Business and Professional people.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchDubai, United Arab EmiratesHQ recorded Sep 19, 202651-200223 contacts →

Exact match

“Eton Institute operates with the understanding that languages, communication, and culture are fundamental to the human experience and necessary for an individual and…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchBelgiumHQ recorded Sep 19, 2026201-500216 contacts →

Exact match

“Since 1975, CERAN, member of the Chateauform' Group, has been a leader for intensive language courses and cross-cultural training.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Sep 19, 202651-200179 contacts →

Exact match

“Language Services Direct is a leading supplier of professional language training in the UK and globally.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 25 of 7,324 customer service language training firms worldwide

See the full list, filter by size, metro and specialty, and access 7,351 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Customer service language training firms worldwide at a glance

As of Sep 19, 2026
9.2%Verified-email coverage
10.9Average contacts per company
1-10Median size (employees)
2.5%Largest-city concentration · Sao Paulo
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
4,607
11-50
1,986
51-200
515
201-500
125
501-1,000
33
1,001-5,000
21
5,001-10,000
7
10001+
7

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for customer service language training firms are linked below.
What qualifies
Company records worldwide whose business descriptions match “customer service language training firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 7,351 professional contacts with verified work emails across the full matched dataset. 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 19, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Customer service language training firms by location

26 lists · largest first

Every Customer service language training firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “customer service language training firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many customer service language training firms are there worldwide?

RevenueBase identified 7,324 company matches for customer service language training firms worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Languageline Solutions tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most customer service language training firms?

Brazil leads with 603 companies, followed by France (535) and Spain (504). Every customer service language training firms list by country and city is linked on this page.

Which city has the most customer service language training firms?

Sao Paulo leads with 181 company records, followed by Madrid (123) and London (121).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 7,351 professional contacts with verified work emails tracked across these 7,324 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 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 SmartSearch, 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.