Company lists · Data refreshed November 2026

Top 25 Call center platform providers worldwide

RevenueBase identified 4,594 company matches for call center platform providers worldwide as of November 2026 and tracks 252,246 professional contacts across them, including 38,228 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for call center platform providers 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 5, 2026. Country and city lists for call center platform providers 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 5, 2026 How this list was built
4,594Companies
252,246Contacts tracked
38,228Verified emails
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The 25 largest call center platform providers worldwide

Ranked by team size
Top 25 of 4,594 company matches for call center platform providers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchDenver, United StatesHQ recorded Nov 5, 202610001+16,728 contacts →

Exact match

“A global customer experience (CX) management solutions provider, Startek® delivers best-in-class omnichannel CX, digital transformation and enterprise tech services for leading…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchBeyoglu, TürkiyeHQ recorded Nov 5, 202610001+6,889 contacts →

Exact match

“Bir Turkcell grup şirketi olarak yılında kurulduğumuzda amacımız hep eşsiz bir müşteri deneyimi yaşatmaktı.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchBelmont, United StatesHQ recorded Nov 5, 20265,001-10,0006,795 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchBloomington, United StatesHQ recorded Nov 5, 202610001+6,716 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchDallas, TX, United StatesHQ recorded Nov 5, 20265,001-10,0004,798 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchMadrid, SpainHQ recorded Nov 5, 202610001+4,355 contacts →

Exact match

“is a tech company specialized in providing, and for.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchTaboão Da Serra, BrazilHQ recorded Nov 5, 20265,001-10,0004,283 contacts →

Exact match

“Founded in 1993, since the beginning Sercom has stood out in the Contact Center Services.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchPasay City, PhilippinesHQ recorded Nov 5, 20265,001-10,0003,904 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchPoa, BrazilHQ recorded Nov 5, 20265,001-10,0003,730 contacts →

Exact match

“A TMKT é uma empresa de Contact Center que foi fundada em 1991 e se tornou uma referência no mercado de Customer Experience (CX).”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchTaytay, PhilippinesHQ recorded Nov 5, 20265,001-10,0003,611 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchDallas, TX, United StatesHQ recorded Nov 5, 20261,001-5,0003,517 contacts →

Exact match

“Email: info@Telvista.com Telvista is a premier provider of contact solutions that drive customer loyalty and create competitive advantage for our clients.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchSao Paulo, BrazilHQ recorded Nov 5, 202610001+3,349 contacts →

Exact match

“Com uma vontade contagiante de fazer a diferença, a Contax é a única empresa do setor presente em toda a jornada de relacionamento do consumidor, com olhar humano e abordagem…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchBerwyn, PA, United StatesHQ recorded Nov 5, 20265,001-10,0003,116 contacts →

Exact match

“Advanced Call Center Technologies, LLC (ACT) is a premier provider of domestic (USA), near shore and far shore outsourced call center services to the financial services, mortgage…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchSan Ramon, CA, United StatesHQ recorded Nov 5, 20261,001-5,0002,840 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchCampbell, United StatesHQ recorded Nov 5, 20261,001-5,0002,541 contacts →

Exact match

“8x8, Inc.(NASDAQ: EGHT) believes that CX limits were meant to be shattered.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchMakati City, PhilippinesHQ recorded Nov 5, 202610001+2,182 contacts →

Exact match

“Sitel Philippines (formerly SYKES).”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchSan Francisco, CA, United StatesHQ recorded Nov 5, 2026n/a2,072 contacts →

Exact match

“Human-Led, Tech-Powered Customer Service Liveops helps enterprise brands deliver flexible customer service that builds trust, strengthens loyalty, and adapts to changing demand.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchWaco, United StatesHQ recorded Nov 5, 20265,001-10,0002,055 contacts →

Exact match

“Support Services Group (SSG) helps businesses accelerate growth and earn customers for life through high-touch, outsourced engagement center services.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchLondon, United KingdomHQ recorded Nov 5, 20261,001-5,0002,052 contacts →

Exact match

“We believe customers and employees should be looked after, and every interaction is an opportunity for a conversation and to learn more about them.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchAkron, OH, United StatesHQ recorded Nov 5, 20261,001-5,0001,947 contacts →

Exact match

“InfoCision is an award-winning contact center partner trusted by leading brands for over 40 years.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchBoca Raton, United StatesHQ recorded Nov 5, 20265,001-10,0001,921 contacts →

Exact match

“Award-winning outsourcing partner with two decades of experience operating an exclusively nearshore strategy that delivers better performance, close to home, and at a lower cost.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchBhopal, IndiaHQ recorded Nov 5, 20261,001-5,0001,917 contacts →

Exact match

“Transforming Customer Experiences Worldwide** At Technotask, we've embarked on a journey of exponential growth and innovation since our inception in March 2020.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchIssy Les Moulineaux, FranceHQ recorded Nov 5, 20265,001-10,0001,896 contacts →

Exact match

“Filiale du groupe Tessi, nous disposons d'un portefeuille de solutions qui nous rend totalement unique sur le marché, du -'.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchMahwah, NJ, United StatesHQ recorded Nov 5, 20261,001-5,0001,628 contacts →

Exact match

“DialAmerica is now Aucera.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchEl Paso, United StatesHQ recorded Nov 5, 20261,001-5,0001,611 contacts →

Exact match

“DATAMARK Inc, a provider of omni-channel contact centers and business process outsourcing (BPO) services since 1989, employs more than at our facilities in the United States…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 4,594 call center platform providers worldwide

See the full list, filter by size, metro and specialty, and access 38,228 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Call center platform providers worldwide at a glance

As of Nov 5, 2026
15.2%Verified-email coverage
54.9Average contacts per company
11-50Median size (employees)
1.9%Largest-city concentration · Sao Paulo
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
1,086
11-50
1,672
51-200
1,070
201-500
358
501-1,000
176
1,001-5,000
163
5,001-10,000
29
10001+
24

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 call center platform providers are linked below.
What qualifies
Company records worldwide whose business descriptions match “call center platform providers” 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 38,228 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 5, 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.

Call center platform providers by location

27 lists · largest first

Every Call center platform 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 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 “call center platform providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many call center platform providers are there worldwide?

RevenueBase identified 4,594 company matches for call center platform providers 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?

Startek tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most call center platform providers?

The United States leads with 884 companies, followed by India (321) and Brazil (254). Every call center platform providers list by country and city is linked on this page.

Which city has the most call center platform providers?

Sao Paulo leads with 88 company records, followed by London (58) and Lahore (50).

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 38,228 professional contacts with verified work emails tracked across these 4,594 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 5, 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.