Company lists · Data refreshed September 2026

Top 25 Customer service platform companies worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 3,735 companies tracked

RevenueBase identified 3,735 customer service platform companies worldwide as of September 2026 and tracks 221,154 professional contacts across them, including 48,681 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers customer service platform 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 28, 2026. Country and city lists for customer service platform 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 RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

3,735Companies

221,154Contacts tracked

48,681Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest customer service platform companies worldwide

Ranked by team size

Top 25 of 3,735 customer service platform companies worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to customer service platform 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	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
2	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
3	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
4	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
5	Twilio	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	5,001-10,000	6,047 contacts →
	Strong evidence “Today's leading companies trust Twilio's Customer Engagement Platform (CEP) to build direct, personalized relationships with their customers everywhere in the world.” Source: RevenueBase Database · checked Sep 28, 2026
6	CSG	Partial evidence	Englewood, CO, United StatesHQ checked Sep 28, 2026	5,001-10,000	5,874 contacts →
	Partial evidence “CSG is a leader in innovative customer engagement, revenue management and payments solutions that make ordinary customer experiences extraordinary.” Source: RevenueBase Database · checked Sep 28, 2026
7	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
8	Brasil Center Comunicações	Indirect evidence	n/a	5,001-10,000	3,979 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
9	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
10	Telvista	Partial evidence	Dallas, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,122 contacts →
	Partial 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
11	EPX Eperformax Contact Centers	Partial evidence	Pasay City, PhilippinesHQ checked Sep 28, 2026	5,001-10,000	3,061 contacts →
	Partial 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
12	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
13	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
14	Klaviyo	Indirect evidence	Boston, MA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,789 contacts →
	Indirect evidence “Klaviyo (NYSE: KVYO) is the autonomous B2C CRM.” Source: RevenueBase Database · checked Sep 28, 2026
15	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
16	8x8	Indirect evidence	Campbell, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,444 contacts →
	Indirect evidence “8x8, Inc.(NASDAQ: EGHT) believes that CX limits were meant to be shattered.” Source: RevenueBase Database · checked Sep 28, 2026
17	Webhelp Onelink	Partial evidence	Guatemala, United StatesHQ checked Sep 28, 2026	10001+	2,245 contacts →
	Partial evidence “OneLink is the premier partner in outsourced omnichannel customer experience services.” Source: RevenueBase Database · checked Sep 28, 2026
18	Contax S.A	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 28, 2026	10001+	2,114 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
19	Liveops, INC	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	n/a	2,026 contacts →
	Partial evidence “Human-Led, Tech-Powered Customer Service For over 25 years, Liveops has redefined customer support by combining technology with real human connection.” Source: RevenueBase Database · checked Sep 28, 2026
20	Quantanite	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	1,991 contacts →
	Partial evidence “We believe customers and employees should be looked after, and every interaction is an opportunity for a conversation and to learn more about them.” Source: RevenueBase Database · checked Sep 28, 2026
21	Technotask Business Solutions PVT LTD	Partial evidence	Bhopal, IndiaHQ checked Sep 28, 2026	1,001-5,000	1,762 contacts →
	Partial evidence “Transforming Customer Experiences Worldwide** At Technotask, we've embarked on a journey of exponential growth and innovation since our inception in March 2020.” Source: RevenueBase Database · checked Sep 28, 2026
22	Supportninja	Partial evidence	Austin, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,711 contacts →
	Partial evidence “SupportNinja provides customer experience and back-office support services for tech companies and startups around the world.” Source: RevenueBase Database · checked Sep 28, 2026
23	Support Services Group	Partial evidence	Waco, TX, United StatesHQ checked Sep 28, 2026	5,001-10,000	1,710 contacts →
	Partial evidence “Support Services Group (SSG) helps businesses accelerate growth and earn customers for life through high-touch, outsourced engagement center services.” Source: RevenueBase Database · checked Sep 28, 2026
24	Nextiva	Strong evidence	Scottsdale, AZ, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,638 contacts →
	Strong evidence “Build amazing customer experiences with Nextiva’s AI-powered platform.” Source: RevenueBase Database · checked Sep 28, 2026
25	Dialamerica	Indirect evidence	Mahwah, NJ, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,536 contacts →
	Indirect evidence “DialAmerica is now Aucera.” 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 service platform 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 customer service platform companies.
Partial evidence: Its own public description names part of customer service platform companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name customer service platform 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 3,735 customer service platform companies worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 48,681 reachable decision-makers.

Free signup · no credit card

View the full list →

Customer service platform companies worldwide at a glance

As of Sep 28, 2026

22.0%Verified-email coverage

59.2Average contacts per company

11-50Median size (employees)

2.5%Largest-city concentration · Sao Paulo

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

1,356

11-50

1,256

51-200

655

201-500

192

501-1,000

107

1,001-5,000

115

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 platform 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 customer service platform companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “customer service platform 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 customer service platform 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 customer service platform 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, 48,681 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 service platform companies by location

26 lists · largest first

Every Customer service platform 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 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 platform 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 customer service platform companies are there worldwide?

RevenueBase identified 3,735 customer service platform 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?

Startek, headquartered in Mumbai, tops this list with the largest team on record.

Which country has the most customer service platform companies?

The United States leads with 692 companies, followed by Brazil (338) and India (241). Every customer service platform companies list by country and city is linked on this page.

Which city has the most customer service platform companies?

Sao Paulo leads with 94 headquartered companies, followed by London (84) and New York (43).

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 48,681 verified decision-maker contacts tracked across these 3,735 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.

Ready to reach these companies? Verified emails and direct dials for all 3,735 customer service platform companies worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

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.