Company lists · Data refreshed September 2026

Top 25 Customer service solution providers worldwide

Name: Customer service solution providers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 11,470 companies tracked

RevenueBase identified 11,470 customer service solution providers worldwide as of September 2026 and tracks 859,141 professional contacts across them, including 84,312 with verified work emails. The United States is the largest market and Lahore the largest hub.

This list covers customer service solution providers 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 customer service solution providers 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 RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

11,470Companies

859,141Contacts tracked

84,312Verified emails

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The 25 largest customer service solution providers worldwide

Ranked by team size

Top 25 of 11,470 customer service solution providers worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to customer service solution providers: 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	Atento	Partial evidence	Madrid, MexicoHQ checked Sep 19, 2026	10001+	77,129 contacts →
	Partial evidence “We are one of the world's largest global providers of customer relationship management and business transformation outsourcing (CRM/BTO) services and industry leaders in Latin…” Source: RevenueBase Database · checked Sep 19, 2026
2	Alorica	Partial evidence	Irvine, CA, United StatesHQ checked Sep 19, 2026	10001+	47,558 contacts →
	Partial evidence “We’re passionate about creating customers for life by designing experiences that elevate your brand.” Source: RevenueBase Database · checked Sep 19, 2026
3	Sitel Group	Partial evidence	Miami, FL, United StatesHQ checked Sep 19, 2026	10001+	35,365 contacts →
	Partial evidence “Foundever™ is a global leader in the customer experience (CX) industry.” Source: RevenueBase Database · checked Sep 19, 2026
4	Konecta	Partial evidence	Madrid, SpainHQ checked Sep 19, 2026	10001+	23,763 contacts →
	Partial evidence “Konecta is a leading innovative global service provider in customer management business process outsourcing, with passionate employees working in 40 languages across 4 continents…” Source: RevenueBase Database · checked Sep 19, 2026
5	AEC	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 19, 2026	10001+	20,095 contacts →
	Indirect evidence “A AeC é apontada consistentemente como a líder brasileira na entrega de soluções de experiência do cliente e gestão de processos terceirizados.” Source: RevenueBase Database · checked Sep 19, 2026
6	IQOR	Strong evidence	Fort Lauderdale, FL, United StatesHQ checked Sep 19, 2026	10001+	17,310 contacts →
	Strong evidence “iQor is a trusted partner in customer experience solutions for global brands and a portfolio company of Mill Point Capital.” Source: RevenueBase Database · checked Sep 19, 2026
7	IBEX	Strong evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	10001+	15,457 contacts →
	Strong evidence “ibex delivers innovative business process outsourcing (BPO), smart digital marketing, online acquisition technology, and end-to-end customer engagement solutions to help companies…” Source: RevenueBase Database · checked Sep 19, 2026
8	Startek	Strong evidence	Denver, United StatesHQ checked Sep 19, 2026	10001+	14,976 contacts →
	Strong evidence “A global customer experience (CX) management solutions provider, Startek® delivers best-in-class omnichannel CX, digital transformation and enterprise tech services for leading…” Source: RevenueBase Database · checked Sep 19, 2026
9	Ienergizer	Strong evidence	Noida, IndiaHQ checked Sep 19, 2026	10001+	14,745 contacts →
	Strong evidence “iEnergizer is a leading Business Process Outsourcing provider (“BPO”) of customer management solutions dedicated to delivering performance while actively supporting and advocating…” Source: RevenueBase Database · checked Sep 19, 2026
10	VXI Global Solutions	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	10001+	14,238 contacts →
	Strong evidence “About VXI Global Solutions VXI Global Solutions is a BPO leader in customer service, customer experience, and digital solutions.” Source: RevenueBase Database · checked Sep 19, 2026
11	Comdata Group	Indirect evidence	Corsico, ItalyHQ checked Sep 19, 2026	10001+	9,614 contacts →
	Indirect evidence “We're KONECTA now!” Source: RevenueBase Database · checked Sep 19, 2026
12	Cogent E Services	Strong evidence	Noida, IndiaHQ checked Sep 19, 2026	10001+	7,313 contacts →
	Strong evidence “We are an end-to-end Customer Experience (CX) solutions provider offering omni-channel solutions along various customer interaction touch-points from customer sales and support…” Source: RevenueBase Database · checked Sep 19, 2026
13	Freshworks	Indirect evidence	San Mateo, CA, United StatesHQ checked Sep 19, 2026	1,001-5,000	7,034 contacts →
	Indirect evidence “Freshworks Inc.(NASDAQ: FRSH) is the AI-powered, unified service operations platform that is fast to deploy, intuitive to use, and enables every employee to be more productive.” Source: RevenueBase Database · checked Sep 19, 2026
14	Turkcell Global Bilgi	Indirect evidence	Beyoglu, TürkiyeHQ checked Sep 19, 2026	10001+	6,167 contacts →
	Indirect evidence “Bir Turkcell grup şirketi olarak yılında kurulduğumuzda amacımız hep eşsiz bir müşteri deneyimi yaşatmaktı.” Source: RevenueBase Database · checked Sep 19, 2026
15	Everise	Partial evidence	Plantation, FL, United StatesHQ checked Sep 19, 2026	10001+	5,863 contacts →
	Partial evidence “Everise delivers happiness to millions of customers around the world.” Source: RevenueBase Database · checked Sep 19, 2026
16	Afni, INC	Indirect evidence	Bloomington, IL, United StatesHQ checked Sep 19, 2026	10001+	5,553 contacts →
	Indirect evidence “When people reach for their phones, use laptops, or grab their tablets, Afni's contact center teams are there to provide prompt and friendly help.” Source: RevenueBase Database · checked Sep 19, 2026
17	Emtelco S.A	Indirect evidence	Medellín, ColombiaHQ checked Sep 19, 2026	10001+	4,998 contacts →
	Indirect evidence “Maximizamos el valor de cada contacto de las empresas con sus clientes, gestionando los procesos de relacionamiento a través de canales tefónicos, virtuales y presenciales.” Source: RevenueBase Database · checked Sep 19, 2026
18	Fusion CX	Partial evidence	Norcross, GA, United StatesHQ checked Sep 19, 2026	10001+	4,785 contacts →
	Partial evidence “At Fusion CX, we revolutionize customer experience by blending innovative technology and human connection.” Source: RevenueBase Database · checked Sep 19, 2026
19	Call Center Services International	Partial evidence	San Diego, CA, United StatesHQ checked Sep 19, 2026	1,001-5,000	4,561 contacts →
	Partial evidence “CCSI specializes in high‑performance, cost‑efficient contact center solutions supported by a world‑class bilingual workforce and state‑of‑the‑art infrastructure in Mexico.” Source: RevenueBase Database · checked Sep 19, 2026
20	Apex America	Partial evidence	Córdoba, ArgentinaHQ checked Sep 19, 2026	10001+	4,377 contacts →
	Partial evidence “At Apex America, we are a Next Generation BPO and a global strategic partner specialized in elevating customer service standards.” Source: RevenueBase Database · checked Sep 19, 2026
21	Continuum Global Solutions	Partial evidence	Dallas, TX, United StatesHQ checked Sep 19, 2026	5,001-10,000	4,342 contacts →
	Partial evidence “With a fresh name and decades of contact center expertise, we’re dedicated to collaborative partnerships, understanding your unique needs, and tailoring solutions for an enhanced…” Source: RevenueBase Database · checked Sep 19, 2026
22	Callink	Indirect evidence	Uberlândia, BrazilHQ checked Sep 19, 2026	5,001-10,000	4,126 contacts →
	Indirect evidence “Mais que call center: soluções que transformam o seu negócio e a jornada dos clientes!” Source: RevenueBase Database · checked Sep 19, 2026
23	Raya CX	Partial evidence	Giza, EgyptHQ checked Sep 19, 2026	5,001-10,000	3,989 contacts →
	Partial evidence “RAYA Customer Experience provides next-generation BPO and customer experience management on behalf of clients across various industries.” Source: RevenueBase Database · checked Sep 19, 2026
24	Brasil Center Comunicações	Indirect evidence	n/a	5,001-10,000	3,979 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
25	Harte Hanks	Partial evidence	Chelmsford, MA, United StatesHQ checked Sep 19, 2026	1,001-5,000	3,901 contacts →
	Partial evidence “We are The Customer Company®, a global leader in Customer Experience (CX), Omnichannel Marketing, Data Services, Customer Care, Fulfillment, and Logistics.” 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: customer service solution providers. 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 customer service solution providers.
Partial evidence: Its own public description names part of customer service solution providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name customer service solution providers. 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 11,470 customer service solution providers worldwide

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Customer service solution providers worldwide at a glance

As of Sep 19, 2026

9.8%Verified-email coverage

74.9Average contacts per company

11-50Median size (employees)

1.7%Largest-city concentration · Lahore

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

3,268

11-50

3,840

51-200

2,432

201-500

918

501-1,000

411

1,001-5,000

405

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 customer service solution providers, 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 customer service solution providers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “customer service solution providers”. 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 customer service solution providers), 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 customer service solution providers, 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, 84,312 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.

Customer service solution providers by location

58 lists · largest first

Every Customer service solution providers 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 customer service solution providers, 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 customer service solution providers are there worldwide?

RevenueBase identified 11,470 customer service solution providers 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?

Atento, headquartered in Madrid, tops this list with the largest team on record.

Which country has the most customer service solution providers?

The United States leads with 2,009 companies, followed by India (974) and Brazil (633). Every customer service solution providers list by country and city is linked on this page.

Which city has the most customer service solution providers?

Lahore leads with 197 headquartered companies, followed by Sao Paulo (184) and London (122).

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 84,312 verified decision-maker contacts tracked across these 11,470 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.