Company lists · Data refreshed November 2026

Top 25 Customer service language training firms worldwide

Name: Customer service language training firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 12,618 companies tracked

RevenueBase identified 12,618 company matches for customer service language training firms worldwide as of November 2026 and tracks 145,744 professional contacts across them, including 13,042 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 November 6, 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 Nov 6, 2026 How this list was built

12,618Companies

145,744Contacts tracked

13,042Verified emails

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The 25 largest customer service language training firms worldwide

Ranked by team size

Top 25 of 12,618 company matches for customer service language training firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Languageline Solutions	Exact match	Monterey, CA, United StatesHQ recorded Nov 6, 2026	10001+	6,855 contacts →
	Exact match “LanguageLine Solutions is the world’s leading language solutions company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Wall Street English	Exact match	Barcelona, SpainHQ recorded Nov 6, 2026	1,001-5,000	4,553 contacts →
	Exact match “We are Wall Street English, the premier provider of English language instruction for individuals and corporate clients around the world.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Berlitz Corporation	Exact match	Princeton, NJ, United StatesHQ recorded Nov 6, 2026	5,001-10,000	2,602 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 · Nov 6, 2026 · View company records in RevenueBase
4	Dale Carnegie Training	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,752 contacts →
	Exact match “Dale Carnegie helps people from all walks of life become fearless, giving leaders the confidence they need to get the most out of life and work.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Language Services Associates	Exact match	Horsham, PA, United StatesHQ recorded Nov 6, 2026	n/a	1,720 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 · Nov 6, 2026 · View company records in RevenueBase
6	Learnlight	Exact match	London, United KingdomHQ recorded Nov 6, 2026	201-500	1,298 contacts →
	Exact match “Learnlight is a global EdTech company that helps organizations build the human skills that drive performance across cultures and borders.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Bibo Global Opportunity	Exact match	Makati City, PhilippinesHQ recorded Nov 6, 2026	201-500	1,130 contacts →
	Exact match “VISION STATEMENT Engoo, formerly known as Bibo Global Opportunity, Inc, is the biggest and fastest-growing online English school in the Philippines and Japan, producing effective…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Global Lt, INC	Exact match	Troy, MI, United StatesHQ recorded Nov 6, 2026	n/a	911 contacts →
	Exact match “Global LT has been a leading expert in Language Solutions and Expatriate Services since 1979.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Rosetta Stone	Exact match	Arlington, VA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	649 contacts →
	Exact match “We transform how the world learns languages.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Bilingual	Exact match	Magdalena Del Mar, United StatesHQ recorded Nov 6, 2026	201-500	635 contacts →
	Exact match “At Bilingual, we are your gateway to seamless global communication.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Learnship	Exact match	Cologne, GermanyHQ recorded Nov 6, 2026	201-500	624 contacts →
	Exact match “goFLUENT acquired the assets of Learnship Networks GmbH on December 1st, 2025.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Multilingual Interpreters And Translators	Exact match	Winter Haven, United StatesHQ recorded Nov 6, 2026	n/a	618 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 · Nov 6, 2026 · View company records in RevenueBase
13	Production SA	Exact match	La Hulpe, BelgiumHQ recorded Nov 6, 2026	n/a	558 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 · Nov 6, 2026 · View company records in RevenueBase
14	Berlitz Deutschland Gmbh	Exact match	Frankfurt, GermanyHQ recorded Nov 6, 2026	201-500	550 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 · Nov 6, 2026 · View company records in RevenueBase
15	Twenix	Exact match	Madrid, SpainHQ recorded Nov 6, 2026	51-200	550 contacts →
	Exact match “La vida no es listen and repeat’.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Semantix	Exact match	Stockholm, SwedenHQ recorded Nov 6, 2026	201-500	538 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 · Nov 6, 2026 · View company records in RevenueBase
17	Cygnific	Exact match	Amsterdam, NetherlandsHQ recorded Nov 6, 2026	1,001-5,000	534 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 · Nov 6, 2026 · View company records in RevenueBase
18	Quick Learning	Exact match	Mexico City, MexicoHQ recorded Nov 6, 2026	1,001-5,000	495 contacts →
	Exact match “En Quick Learning primero te enseñamos a pensar y hablar en inglés; sin ver nada escrito y sin reglas gramaticales; y cuando ya lo hablas, entonces te enseñamos a leer y a…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	CAKAP	Exact match	Jakarta Barat, IndonesiaHQ recorded Nov 6, 2026	51-200	478 contacts →
	Exact match “Cakap is an Indonesian education group that develops a learning platform for professional skill development with more than 6 million users spread throughout the country.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Rockfeller Language Center	Exact match	Balneário Camboriu, BrazilHQ recorded Nov 6, 2026	n/a	470 contacts →
	Exact match “Ser fluente em inglês é poder se expressar exatamente do jeito que você quer.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Vaughan Systems	Exact match	Madrid, SpainHQ recorded Nov 6, 2026	201-500	423 contacts →
	Exact match “Vaughan Systems is a leading provider of English language training in Spain.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Wall Street English China	Exact match	Shanghai, ChinaHQ recorded Nov 6, 2026	1,001-5,000	385 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 · Nov 6, 2026 · View company records in RevenueBase
23	Adecco Training	Exact match	Villeurbanne, FranceHQ recorded Nov 6, 2026	51-200	378 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 · Nov 6, 2026 · View company records in RevenueBase
24	BUSUU	Exact match	London, United KingdomHQ recorded Nov 6, 2026	51-200	368 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 · Nov 6, 2026 · View company records in RevenueBase
25	MY English School Italia	Exact match	Florence, ItalyHQ recorded Nov 6, 2026	201-500	363 contacts →
	Exact match “My English School è una realtà innovativa orientata all'apprendimento della lingua inglese che pone al centro della didattica le esigenze e i bisogni reali degli interessati.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “customer service language training firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 12,618 customer service language training firms worldwide

See the full list, filter by size, metro and specialty, and access 13,042 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 Nov 6, 2026

8.9%Verified-email coverage

11.6Average contacts per company

1-10Median size (employees)

2.4%Largest-city concentration · Sao Paulo

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

7,915

11-50

3,421

51-200

860

201-500

218

501-1,000

1,001-5,000

5,001-10,000

10001+

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 13,042 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 November 6, 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

56 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 12,618 company matches for customer service language training firms worldwide as of November 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 1,117 companies, followed by the United States (862) and Spain (810). 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 303 company records, followed by London (214) and Madrid (180).

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 13,042 professional contacts with verified work emails tracked across these 12,618 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 November 6, 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.