Company lists · Data refreshed October 2026

Top 25 Contact center as a service software companies worldwide

RevenueBase identified 4,298 company matches for contact center as a service software companies worldwide as of October 2026 and tracks 254,586 professional contacts across them, including 38,248 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for contact center as a service software companies 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 October 19, 2026. Country and city lists for contact center as a service software companies 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 Oct 19, 2026 How this list was built
4,298Companies
254,586Contacts tracked
38,248Verified emails
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The 25 largest contact center as a service software companies worldwide

Ranked by team size
Top 25 of 4,298 company matches for contact center as a service software companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 19, 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 Oct 19, 202610001+15,873 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 · Oct 19, 2026 · View company records in RevenueBase
2Exact matchBeyoglu, TürkiyeHQ recorded Oct 19, 202610001+6,674 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
3Exact matchBelmont, CA, United StatesHQ recorded Oct 19, 20265,001-10,0006,655 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 · Oct 19, 2026 · View company records in RevenueBase
4Exact matchBloomington, IL, United StatesHQ recorded Oct 19, 202610001+6,507 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 · Oct 19, 2026 · View company records in RevenueBase
5Exact matchSan Diego, CA, United StatesHQ recorded Oct 19, 20261,001-5,0004,682 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
6Exact matchDallas, TX, United StatesHQ recorded Oct 19, 20265,001-10,0004,646 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 · Oct 19, 2026 · View company records in RevenueBase
7Exact matchTaboão Da Serra, BrazilHQ recorded Oct 19, 20265,001-10,0004,099 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
8Exact matchPasay City, PhilippinesHQ recorded Oct 19, 20265,001-10,0003,781 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 · Oct 19, 2026 · View company records in RevenueBase
9Exact matchPoa, BrazilHQ recorded Oct 19, 20265,001-10,0003,636 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 · Oct 19, 2026 · View company records in RevenueBase
10Exact matchHolmdel, NJ, United StatesHQ recorded Oct 19, 20261,001-5,0003,595 contacts →

Exact match

“We’re making communications more flexible, intelligent, and personal, to help enterprises the world over stay ahead.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
11Exact matchDallas, TX, United StatesHQ recorded Oct 19, 20261,001-5,0003,352 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 · Oct 19, 2026 · View company records in RevenueBase
12Exact matchMontes Claros, BrazilHQ recorded Oct 19, 20261,001-5,0003,110 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
13Exact matchBerwyn, PA, United StatesHQ recorded Oct 19, 20265,001-10,0002,997 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 · Oct 19, 2026 · View company records in RevenueBase
14Exact matchSan Ramon, CA, United StatesHQ recorded Oct 19, 20261,001-5,0002,764 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 · Oct 19, 2026 · View company records in RevenueBase
15Exact matchCampbell, CA, United StatesHQ recorded Oct 19, 20261,001-5,0002,493 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
16Exact matchBuenos Aires, ArgentinaHQ recorded Oct 19, 20261,001-5,0002,354 contacts →

Exact match

“Somos la compañía líder en Servicios Next Gen de Contact Center, Business Process Outsourcing (BPO) y Customer Experience (CX).”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
17Exact matchLondon, United KingdomHQ recorded Oct 19, 20261,001-5,0001,981 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 · Oct 19, 2026 · View company records in RevenueBase
18Exact matchSan Francisco, CA, United StatesHQ recorded Oct 19, 2026n/a1,974 contacts →

Exact match

“Human-Led, Tech-Powered Customer Service For over 25 years, Liveops has redefined customer support by combining technology with real human connection.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
19Exact matchWaco, TX, United StatesHQ recorded Oct 19, 20265,001-10,0001,961 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 · Oct 19, 2026 · View company records in RevenueBase
20Exact matchAkron, OH, United StatesHQ recorded Oct 19, 20261,001-5,0001,902 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 · Oct 19, 2026 · View company records in RevenueBase
21Exact matchBoca Raton, FL, United StatesHQ recorded Oct 19, 20265,001-10,0001,813 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 · Oct 19, 2026 · View company records in RevenueBase
22Exact matchBhopal, IndiaHQ recorded Oct 19, 20261,001-5,0001,813 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 · Oct 19, 2026 · View company records in RevenueBase
23Exact matchMahwah, NJ, United StatesHQ recorded Oct 19, 20261,001-5,0001,606 contacts →

Exact match

“DialAmerica is now Aucera.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
24Exact matchScottsdale, AZ, United StatesHQ recorded Oct 19, 20261,001-5,0001,602 contacts →

Exact match

“Build amazing customer experiences with Nextiva’s AI-powered platform.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Oct 19, 20261,001-5,0001,526 contacts →

Exact match

“Senture provides comprehensive contact center service support nationally.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase

Showing 25 of 4,298 contact center as a service software companies worldwide

See the full list, filter by size, metro and specialty, and access 38,248 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Contact center as a service software companies worldwide at a glance

As of Oct 19, 2026
15.0%Verified-email coverage
59.2Average contacts per company
11-50Median size (employees)
1.9%Largest-city concentration · Sao Paulo
Oct 19, 2026Page data refreshed

Companies by employee count

1-10
889
11-50
1,507
51-200
1,067
201-500
381
501-1,000
200
1,001-5,000
194
5,001-10,000
32
10001+
22

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 contact center as a service software companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “contact center as a service software companies” 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 38,248 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 October 19, 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.

Contact center as a service software companies by location

29 lists · largest first

Every Contact center as a service software 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 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 “contact center as a service software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many contact center as a service software companies are there worldwide?

RevenueBase identified 4,298 company matches for contact center as a service software companies worldwide as of October 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 contact center as a service software companies?

The United States leads with 820 companies, followed by India (338) and Brazil (226). Every contact center as a service software companies list by country and city is linked on this page.

Which city has the most contact center as a service software companies?

Sao Paulo leads with 83 company records, followed by London (55) and Lahore (41).

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 38,248 professional contacts with verified work emails tracked across these 4,298 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 October 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 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.