Company lists · Data refreshed September 2026

Top 25 App localization companies worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 2,363 companies tracked

RevenueBase identified 2,363 app localization companies worldwide as of September 2026 and tracks 44,693 professional contacts across them, including 7,205 with verified work emails. The United States is the largest market and London the largest hub.

This list covers app 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 19, 2026. Country and city lists for app 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 19, 2026 86% judged on-target in blind review

2,363Companies

44,693Contacts tracked

7,205Verified emails

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The 25 largest app localization companies worldwide

Ranked by team size

Top 25 of 2,363 app localization companies worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to app 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	Lionbridge	Indirect evidence	Waltham, MA, United StatesHQ checked Sep 19, 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 19, 2026
2	Welocalize	Partial evidence	New York, NY, United StatesHQ checked Sep 19, 2026	1,001-5,000	4,873 contacts →
	Partial 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 19, 2026
3	Ccjk Technologies	Indirect evidence	Shen Zhen, ChinaHQ checked Sep 19, 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 19, 2026
4	ALPHA	Indirect evidence	Cambridge, GermanyHQ checked Sep 19, 2026	201-500	526 contacts →
	Indirect evidence “Localize more with Alpha.” Source: RevenueBase Database · checked Sep 19, 2026
5	EC Innovations, INC	Indirect evidence	Wilmington, DE, United StatesHQ checked Sep 19, 2026	501-1,000	487 contacts →
	Indirect evidence “Unlock new worlds!” Source: RevenueBase Database · checked Sep 19, 2026
6	Moravia	Partial evidence	Brno, Czech RepublicHQ checked Sep 19, 2026	1,001-5,000	384 contacts →
	Partial evidence “Moravia, an RWS company, delivers product localization, global digital marketing, and testing services to the world's top brands.” Source: RevenueBase Database · checked Sep 19, 2026
7	Andovar	Partial evidence	SingaporeHQ checked Sep 19, 2026	51-200	356 contacts →
	Partial evidence “Andovar is your gateway to global success, offering a comprehensive suite of custom language data services and localization solutions.” Source: RevenueBase Database · checked Sep 19, 2026
8	Acclaro	Indirect evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	51-200	313 contacts →
	Indirect evidence “Acclaro is a content intelligence solutions business, helping brands communicate with purpose, precision, and global impact.” Source: RevenueBase Database · checked Sep 19, 2026
9	Translate Plus	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	51-200	258 contacts →
	Indirect evidence “translate plus, part of Publicis Groupe, is an award-winning language services provider (LSP) and technology company.” Source: RevenueBase Database · checked Sep 19, 2026
10	Trsb INC	Indirect evidence	Montréal, QC, CanadaHQ checked Sep 19, 2026	201-500	220 contacts →
	Indirect evidence “TRSB, a trusted name in translation, in North America and around the world- Secure, integrated management systems for high volumes and total confidentiality - In-house…” Source: RevenueBase Database · checked Sep 19, 2026
11	Crystal Hues Limited	Partial evidence	New Delhi, IndiaHQ checked Sep 19, 2026	201-500	220 contacts →
	Partial evidence “India's best Language Service Provider (LSP) with 36 years of industry experience in the language industry, specializing in Translation and Localization.” Source: RevenueBase Database · checked Sep 19, 2026
12	The Translation Gate, LLC	Partial evidence	Usa., FL, United StatesHQ checked Sep 19, 2026	51-200	198 contacts →
	Partial evidence “Driven by a passion for language and its power to break barriers between cultures, our translation-and-localization agency was born in 2009 through the collaboration of thousands…” Source: RevenueBase Database · checked Sep 19, 2026
13	DAY Translations, INC	Indirect evidence	Tampa, FL, United StatesHQ checked Sep 19, 2026	1,001-5,000	191 contacts →
	Indirect evidence “Day Translations (daytranslations.com) is a professional document translation company dedicated to providing the most accurate translations on the planet.” Source: RevenueBase Database · checked Sep 19, 2026
14	XTM	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	201-500	190 contacts →
	Indirect evidence “XTM is the AI Globalization Platform that helps the world's most ambitious enterprises create, manage and deliver multilingual content at scale.” Source: RevenueBase Database · checked Sep 19, 2026
15	Voithru 보이스루	Indirect evidence	서울시, South KoreaHQ checked Sep 19, 2026	51-200	180 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
16	Successglo PTE LTD	Indirect evidence	SingaporeHQ checked Sep 19, 2026	201-500	179 contacts →
	Indirect evidence “ISO 9001, ISO17100 and ISO27001 Certified “There is always a better way” This is our very core belief which we hold closely in our hearts here at SuccessGlo, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
17	Kern Global Language Services	Indirect evidence	Frankfurt Am Main, GermanyHQ checked Sep 19, 2026	201-500	178 contacts →
	Indirect evidence “KERN Global Language Services is a leading provider of language services worldwide.” Source: RevenueBase Database · checked Sep 19, 2026
18	Altagram Group	Indirect evidence	Berlin, GermanyHQ checked Sep 19, 2026	51-200	176 contacts →
	Indirect evidence “A good video game has the ability to completely immerse its players in a different reality.” Source: RevenueBase Database · checked Sep 19, 2026
19	Supertext	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 19, 2026	51-200	156 contacts →
	Indirect evidence “Supertext is an AI-based full-service language service provider with offices in Zurich and Berlin.” Source: RevenueBase Database · checked Sep 19, 2026
20	Bespoke LAB	Partial evidence	Seoul, South KoreaHQ checked Sep 19, 2026	51-200	149 contacts →
	Partial evidence “We are passionate about providing exceptional localization services to our clients.” Source: RevenueBase Database · checked Sep 19, 2026
21	translations.com	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 2026	1,001-5,000	143 contacts →
	Indirect evidence “Translations.com is the world’s leading provider of technology and language solutions to power global digital initiatives.” Source: RevenueBase Database · checked Sep 19, 2026
22	Alconost	Partial evidence	Alexandria, VA, United StatesHQ checked Sep 19, 2026	51-200	140 contacts →
	Partial evidence “Alconost handles every aspect of localization-from translation and cultural adaptation to continuous multilingual content updates and engineering-allowing you to focus on your top…” Source: RevenueBase Database · checked Sep 19, 2026
23	GTE Localize	Partial evidence	Marlborough, MA, United StatesHQ checked Sep 19, 2026	51-200	136 contacts →
	Partial evidence “GTE Localize is a premier global translation agency, delivering top-tier language services including translation, localization, subtitling, and transcription.” Source: RevenueBase Database · checked Sep 19, 2026
24	Mobisummer	Indirect evidence	Hong KongHQ checked Sep 19, 2026	501-1,000	135 contacts →
	Indirect evidence “At Mobisummer, we pride ourselves on transparency, measurable results, and a collaborative approach.” Source: RevenueBase Database · checked Sep 19, 2026
25	Lingo24	Indirect evidence	Edinburgh, United KingdomHQ checked Sep 19, 2026	51-200	130 contacts →
	Indirect evidence “We know a one-size-fits all approach doesn’t work for global companies that need to release huge volumes of content across multiple languages, markets and channels - fast.” Source: RevenueBase Database · checked Sep 19, 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: app 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 app localization companies.
Partial evidence: Its own public description names part of app localization companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name app 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 2,363 app localization companies worldwide

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App localization companies worldwide at a glance

As of Sep 19, 2026

16.1%Verified-email coverage

18.9Average contacts per company

1-10Median size (employees)

3.0%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

1,186

11-50

803

51-200

270

201-500

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

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among app 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 app localization companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “app 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 app 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 app 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, 7,205 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 19, 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.

App localization companies by location

14 lists · largest first

Every App localization companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 app 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 app localization companies are there worldwide?

RevenueBase identified 2,363 app 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?

Lionbridge, headquartered in Waltham, tops this list with the largest team on record.

Which country has the most app localization companies?

The United States leads with 291 companies, followed by India (172) and the United Kingdom (148). Every app localization companies list by country and city is linked on this page.

Which city has the most app localization companies?

London leads with 70 headquartered companies, followed by Cairo (31) and Dubai (27).

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 7,205 verified decision-maker contacts tracked across these 2,363 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 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 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.