Company lists · Data refreshed September 2026

Top 25 Localization companies worldwide

Name: Localization companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 15,177 companies tracked

RevenueBase identified 15,177 localization companies worldwide as of September 2026 and tracks 212,330 professional contacts across them, including 33,520 with verified work emails. The United States is the largest market and London the largest hub.

This list covers localization companies worldwide, 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 20, 2026. Country and city lists for localization companies follow the table.

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 20, 2026 86% judged on-target in blind review

15,177Companies

212,330Contacts tracked

33,520Verified emails

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The 25 largest localization companies worldwide

Ranked by team size

Top 25 of 15,177 localization companies worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to localization 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	Transperfect	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	5,001-10,000	10,750 contacts →
	Indirect evidence “TransPerfect helps organizations streamline global operations through language and AI solutions, advanced automation, and enterprise-grade technology integrations.” Source: RevenueBase Database · checked Sep 20, 2026
2	Lionbridge	Indirect evidence	Waltham, MA, United StatesHQ checked Sep 20, 2026	5,001-10,000	8,706 contacts →
	Indirect evidence “Lionbridge partners with brands to break barriers and build bridges all over the world.” Source: RevenueBase Database · checked Sep 20, 2026
3	Languageline Solutions	Indirect evidence	Monterey, CA, United StatesHQ checked Sep 20, 2026	10001+	6,440 contacts →
	Indirect evidence “LanguageLine Solutions is the world’s leading language solutions company.” Source: RevenueBase Database · checked Sep 20, 2026
4	Keywords Studios	Indirect evidence	Dublin, GermanyHQ checked Sep 20, 2026	10001+	5,340 contacts →
	Indirect evidence “We work behind the scenes with game developers, publishers, and entertainment companies to bring their ideas to life and keep them running smoothly.” Source: RevenueBase Database · checked Sep 20, 2026
5	Propio Language Services	Indirect evidence	Overland Park, KS, United StatesHQ checked Sep 20, 2026	n/a	5,096 contacts →
	Indirect evidence “Language Access, Driven by Innovation.” Source: RevenueBase Database · checked Sep 20, 2026
6	Welocalize	Strong evidence	New York, NY, United StatesHQ checked Sep 20, 2026	1,001-5,000	4,873 contacts →
	Strong evidence “Welocalize, a Welo Global brand, serves localization teams through AI-enabled multilingual content solutions that enable enterprises to operate and scale globally.” Source: RevenueBase Database · checked Sep 20, 2026
7	IYUNO	Strong evidence	Burbank, CA, United StatesHQ checked Sep 20, 2026	1,001-5,000	2,592 contacts →
	Strong evidence “Iyuno (iyuno.com) is the global media and entertainment industry’s leading localization service provider.” Source: RevenueBase Database · checked Sep 20, 2026
8	SDL	Indirect evidence	Maidenhead, United KingdomHQ checked Sep 20, 2026	1,001-5,000	2,391 contacts →
	Indirect evidence “SDL is the intelligent language and content company.” Source: RevenueBase Database · checked Sep 20, 2026
9	Language Services Associates	Indirect evidence	Horsham, PA, United StatesHQ checked Sep 20, 2026	n/a	1,737 contacts →
	Indirect evidence “Established in 1991, LSA’s mission is to help people and companies survive and thrive in a global environment.” Source: RevenueBase Database · checked Sep 20, 2026
10	Globalstep	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,580 contacts →
	Indirect evidence “GlobalStep provides creative and technical outsourced solutions to the video games industry.” Source: RevenueBase Database · checked Sep 20, 2026
11	Acolad Group	Indirect evidence	Boulogne-billancourt, FranceHQ checked Sep 20, 2026	1,001-5,000	1,283 contacts →
	Indirect evidence “Acolad is a global leader in content and language solutions.” Source: RevenueBase Database · checked Sep 20, 2026
12	Translated	Indirect evidence	Rome, ItalyHQ checked Sep 20, 2026	201-500	1,231 contacts →
	Indirect evidence “We have been offering human translation services for the past 25 years to hundreds of thousands of clients across over 200 languages and 40 areas of expertise.” Source: RevenueBase Database · checked Sep 20, 2026
13	SIDE	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	1,001-5,000	1,208 contacts →
	Indirect evidence “Side (formerly PTW) is a global video game development and services partner, offering technical and creative solutions to many of the largest developers and publishers around the…” Source: RevenueBase Database · checked Sep 20, 2026
14	Thebigword	Indirect evidence	Miami, FL, United KingdomHQ checked Sep 20, 2026	501-1,000	1,105 contacts →
	Indirect evidence “As one of the largest language service providers globally, we utilise the greatest minds and boundary shattering technology to deliver phenomenal quality at scale to both our…” Source: RevenueBase Database · checked Sep 20, 2026
15	Global Lt, INC	Indirect evidence	Troy, MI, United StatesHQ checked Sep 20, 2026	n/a	915 contacts →
	Indirect evidence “Global LT has been a leading expert in Language Solutions and Expatriate Services since 1979.” Source: RevenueBase Database · checked Sep 20, 2026
16	Ccjk Technologies	Indirect evidence	Shen Zhen, ChinaHQ checked Sep 20, 2026	501-1,000	896 contacts →
	Indirect evidence “CCJK (Brand of MarsHub) is a globally known, ISO-certified language services provider that has become the industry leader after years of high-quality services.” Source: RevenueBase Database · checked Sep 20, 2026
17	Seprotec Multilingual Solutions	Indirect evidence	Las Rozas, SpainHQ checked Sep 20, 2026	201-500	866 contacts →
	Indirect evidence “At Seprotec Multilingual Solutions we help thousands of companies around the world to improve their sales by delivering content and facilitating communications in their customer’s…” Source: RevenueBase Database · checked Sep 20, 2026
18	VSI Voice & Script International	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	501-1,000	727 contacts →
	Indirect evidence “Founded in 1989, VSI - Voice & Script International - has over 36 years of unrivalled expertise and success in all aspects of language versioning.” Source: RevenueBase Database · checked Sep 20, 2026
19	Vistatec	Indirect evidence	Dublin, IrelandHQ checked Sep 20, 2026	10001+	663 contacts →
	Indirect evidence “We have been helping some of the world’s most iconic brands to optimize their global commercial potential since 1997.” Source: RevenueBase Database · checked Sep 20, 2026
20	Productive Playhouse	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	201-500	654 contacts →
	Indirect evidence “Productive Playhouse is the execution partner technical program managers trust when scale, compliance, and quality can’t slip.” Source: RevenueBase Database · checked Sep 20, 2026
21	Multilingual Interpreters And Translators	Indirect evidence	Winter Haven, United StatesHQ checked Sep 20, 2026	n/a	617 contacts →
	Indirect evidence “Multilingual Interpreters and Translators, a language service and business solutions Company based in Winter Haven, Florida.” Source: RevenueBase Database · checked Sep 20, 2026
22	BIG Language Solutions	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 20, 2026	501-1,000	604 contacts →
	Indirect evidence “BIG Language Solutions is how even the most complex, highly regulated organizations can finally trust every word.” Source: RevenueBase Database · checked Sep 20, 2026
23	Argos Multilingual	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	201-500	600 contacts →
	Indirect evidence “Argos Multilingual provides global language and data solutions.” Source: RevenueBase Database · checked Sep 20, 2026
24	Dubbing Brothers	Indirect evidence	La Plaine Saint Denis, FranceHQ checked Sep 20, 2026	51-200	571 contacts →
	Indirect evidence “Crée en 1989, le groupe Dubbing Brothers est aujourd’hui leader sur le marché du doublage.” Source: RevenueBase Database · checked Sep 20, 2026
25	Lilt AI	Indirect evidence	San Francisco, United StatesHQ checked Sep 20, 2026	201-500	562 contacts →
	Indirect evidence “Make anything multilingual.” Source: RevenueBase Database · checked Sep 20, 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: localization 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 localization companies.
Partial evidence: Its own public description names part of localization companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name localization 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 15,177 localization companies worldwide

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Localization companies worldwide at a glance

As of Sep 20, 2026

15.8%Verified-email coverage

14.0Average contacts per company

1-10Median size (employees)

2.4%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

9,488

11-50

3,897

51-200

1,198

201-500

322

501-1,000

106

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 localization 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.
Coverage: Every country. Country and city lists for localization companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “localization 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 localization 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 localization companies, and records with no verified work email.
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, 33,520 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 20, 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.

Localization companies by location

71 lists · largest first

Every Localization companies 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 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 localization 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 localization companies are there worldwide?

RevenueBase identified 15,177 localization companies worldwide 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?

Transperfect, headquartered in New York, tops this list with the largest team on record.

Which country has the most localization companies?

The United States leads with 1,828 companies, followed by the United Kingdom (904) and Spain (758). Every localization companies list by country and city is linked on this page.

Which city has the most localization companies?

London leads with 362 headquartered companies, followed by Sao Paulo (233) and Madrid (176).

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 33,520 verified decision-maker contacts tracked across these 15,177 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 20, 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.