Company lists · Data refreshed September 2026

Top 25 Customer contact center platforms worldwide

Name: Customer contact center platforms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 5,324 companies tracked

RevenueBase identified 5,324 customer contact center platforms worldwide as of September 2026 and tracks 376,364 professional contacts across them, including 58,018 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers customer contact center platforms 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 28, 2026. Country and city lists for customer contact center platforms 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 28, 2026 86% judged on-target in blind review

5,324Companies

376,364Contacts tracked

58,018Verified emails

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The 25 largest customer contact center platforms worldwide

Ranked by team size

Top 25 of 5,324 customer contact center platforms worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to customer contact center platforms: 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	AEC	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 28, 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 28, 2026
2	IQOR	Partial evidence	Fort Lauderdale, FL, United StatesHQ checked Sep 28, 2026	10001+	17,310 contacts →
	Partial 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 28, 2026
3	Startek	Partial evidence	Denver, United StatesHQ checked Sep 28, 2026	10001+	14,976 contacts →
	Partial 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 28, 2026
4	Transcom	Partial evidence	Stockholm, SwedenHQ checked Sep 28, 2026	10001+	12,955 contacts →
	Partial evidence “Transcom provides digitally enhanced customer experience (CX) services to some of the world's most ambitious brands.” Source: RevenueBase Database · checked Sep 28, 2026
5	Cogent E Services	Partial evidence	Noida, IndiaHQ checked Sep 28, 2026	10001+	7,313 contacts →
	Partial 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 28, 2026
6	Ringcentral	Strong evidence	Belmont, CA, United StatesHQ checked Sep 28, 2026	5,001-10,000	6,431 contacts →
	Strong evidence “RingCentral, Inc.(NYSE: RNG) is a global leader in AI–powered customer engagement, delivering an integrated platform for business phone, SMS, contact center, workforce engagement…” Source: RevenueBase Database · checked Sep 28, 2026
7	Turkcell Global Bilgi	Indirect evidence	Beyoglu, TürkiyeHQ checked Sep 28, 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 28, 2026
8	Afni, INC	Strong evidence	Bloomington, IL, United StatesHQ checked Sep 28, 2026	10001+	5,553 contacts →
	Strong 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 28, 2026
9	Fusion CX	Partial evidence	Norcross, GA, United StatesHQ checked Sep 28, 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 28, 2026
10	Call Center Services International	Strong evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	4,561 contacts →
	Strong 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 28, 2026
11	Continuum Global Solutions	Strong evidence	Dallas, TX, United StatesHQ checked Sep 28, 2026	5,001-10,000	4,342 contacts →
	Strong 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 28, 2026
12	Vikstar Contact Center	Strong evidence	Sao Paulo, BrazilHQ checked Sep 28, 2026	10001+	3,914 contacts →
	Strong evidence “Vikstar is one of the biggest contact centers of Brazil.” Source: RevenueBase Database · checked Sep 28, 2026
13	Verint	Strong evidence	Melville, NY, United StatesHQ checked Sep 28, 2026	5,001-10,000	3,852 contacts →
	Strong evidence “Verint helps you deliver AI outcomes now to solve your most pressing CX automation challenges in the contact center and beyond.” Source: RevenueBase Database · checked Sep 28, 2026
14	Sercom	Strong evidence	Taboão Da Serra, BrazilHQ checked Sep 28, 2026	5,001-10,000	3,785 contacts →
	Strong evidence “Founded in 1993, since the beginning Sercom has stood out in the Contact Center Services.” Source: RevenueBase Database · checked Sep 28, 2026
15	GSS Global Sales Solutions	Indirect evidence	Madrid, SpainHQ checked Sep 28, 2026	10001+	3,716 contacts →
	Indirect evidence “is a tech company specialized in providing, and for.” Source: RevenueBase Database · checked Sep 28, 2026
16	Vonage	Indirect evidence	Holmdel, NJ, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,429 contacts →
	Indirect evidence “We’re making communications more flexible, intelligent, and personal, to help enterprises the world over stay ahead.” Source: RevenueBase Database · checked Sep 28, 2026
17	TMKT	Strong evidence	Poa, BrazilHQ checked Sep 28, 2026	5,001-10,000	3,333 contacts →
	Strong evidence “A TMKT é uma empresa de Contact Center que foi fundada em 1991 e se tornou uma referência no mercado de Customer Experience (CX).” Source: RevenueBase Database · checked Sep 28, 2026
18	Quantrics Enterprises INC	Partial evidence	Taytay, PhilippinesHQ checked Sep 28, 2026	5,001-10,000	3,132 contacts →
	Partial evidence “In the Philippines, Quantrics by NQX is redefining customer experience by bringing together the expertise of a global leader and the passion of world-class Filipino talent.” Source: RevenueBase Database · checked Sep 28, 2026
19	Telvista	Strong evidence	Dallas, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,122 contacts →
	Strong evidence “Email: info@Telvista.com Telvista is a premier provider of contact solutions that drive customer loyalty and create competitive advantage for our clients.” Source: RevenueBase Database · checked Sep 28, 2026
20	EPX Eperformax Contact Centers	Strong evidence	Pasay City, PhilippinesHQ checked Sep 28, 2026	5,001-10,000	3,061 contacts →
	Strong evidence “ePerformax is a high-performing contact center & BPO that provides world-class, omnichannel service and support to a select group of Fortune companies and their customers.” Source: RevenueBase Database · checked Sep 28, 2026
21	TEL Contact Center	Partial evidence	Salvador, BrazilHQ checked Sep 28, 2026	10001+	3,027 contacts →
	Partial evidence “Entre as 7 principais empresas de Gestão do Relacionamento com Cliente (CRM) do Brasil, há 30 anos a Tel inova no desenvolvimento de soluções customizadas, de alto valor, com um…” Source: RevenueBase Database · checked Sep 28, 2026
22	Etech Global Services	Partial evidence	Nacogdoches, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,964 contacts →
	Partial evidence “Etech Global Services delivers customer experience solutions and proprietary AI technology to Fortune 500 companies across telecommunications, healthcare, financial services, and…” Source: RevenueBase Database · checked Sep 28, 2026
23	VGX Contact Center	Partial evidence	Montes Claros, BrazilHQ checked Sep 28, 2026	1,001-5,000	2,951 contacts →
	Partial evidence “A VGX, é uma empresa 100% brasileira, com 13 anos de atuação e mais de 5.100 colaboradores, consolidada como referência em soluções de Customer Experience,Cobrança, Atendimento…” Source: RevenueBase Database · checked Sep 28, 2026
24	SINCH	Partial evidence	Stockholm, SwedenHQ checked Sep 28, 2026	1,001-5,000	2,934 contacts →
	Partial evidence “Sinch’s vision is to connect every business with every customer, everywhere in the world.” Source: RevenueBase Database · checked Sep 28, 2026
25	Five9	Partial evidence	San Ramon, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,584 contacts →
	Partial evidence “Five9 provides a comprehensive suite of CX solutions, powered by Five9 Genius AI, to elevate customer experiences that deliver better business outcomes in the era of The New CX.” Source: RevenueBase Database · checked Sep 28, 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 contact center platforms. 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 contact center platforms.
Partial evidence: Its own public description names part of customer contact center platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name customer contact center platforms. 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 5,324 customer contact center platforms worldwide

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Customer contact center platforms worldwide at a glance

As of Sep 28, 2026

15.4%Verified-email coverage

70.7Average contacts per company

11-50Median size (employees)

2.3%Largest-city concentration · Sao Paulo

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

1,197

11-50

1,821

51-200

1,276

201-500

463

501-1,000

229

1,001-5,000

249

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 contact center platforms, 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 contact center platforms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “customer contact center platforms”. 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 contact center platforms), 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 contact center platforms, 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, 58,018 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 28, 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 contact center platforms by location

36 lists · largest first

Every Customer contact center platforms 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 contact center platforms, 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 contact center platforms are there worldwide?

RevenueBase identified 5,324 customer contact center platforms 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?

AEC, headquartered in Belo Horizonte, tops this list with the largest team on record.

Which country has the most customer contact center platforms?

The United States leads with 967 companies, followed by Brazil (346) and India (324). Every customer contact center platforms list by country and city is linked on this page.

Which city has the most customer contact center platforms?

Sao Paulo leads with 121 headquartered companies, followed by London (63) and Singapore (37).

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 58,018 verified decision-maker contacts tracked across these 5,324 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 28, 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.