Company lists · Data refreshed September 2026

Top 25 Contact center optimization software companies worldwide

Name: Contact center optimization software companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 4,371 companies tracked

RevenueBase identified 4,371 contact center optimization software companies worldwide as of September 2026 and tracks 223,397 professional contacts across them, including 34,621 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers contact center optimization software 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 27, 2026. Country and city lists for contact center optimization software 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review

4,371Companies

223,397Contacts tracked

34,621Verified emails

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The 25 largest contact center optimization software companies worldwide

Ranked by team size

Top 25 of 4,371 contact center optimization software companies worldwide, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to contact center optimization software 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	AEC	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 27, 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 27, 2026
2	Freshworks	Indirect evidence	San Mateo, CA, United StatesHQ checked Sep 27, 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 27, 2026
3	Ringcentral	Strong evidence	Belmont, CA, United StatesHQ checked Sep 27, 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 27, 2026
4	Turkcell Global Bilgi	Indirect evidence	Beyoglu, TürkiyeHQ checked Sep 27, 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 27, 2026
5	Fusion CX	Indirect evidence	Norcross, GA, United StatesHQ checked Sep 27, 2026	10001+	4,785 contacts →
	Indirect evidence “At Fusion CX, we revolutionize customer experience by blending innovative technology and human connection.” Source: RevenueBase Database · checked Sep 27, 2026
6	Call Center Services International	Strong evidence	San Diego, CA, United StatesHQ checked Sep 27, 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 27, 2026
7	Continuum Global Solutions	Strong evidence	Dallas, TX, United StatesHQ checked Sep 27, 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 27, 2026
8	Callink	Partial evidence	Uberlândia, BrazilHQ checked Sep 27, 2026	5,001-10,000	4,126 contacts →
	Partial evidence “Mais que call center: soluções que transformam o seu negócio e a jornada dos clientes!” Source: RevenueBase Database · checked Sep 27, 2026
9	Verint	Strong evidence	Melville, NY, United StatesHQ checked Sep 27, 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 27, 2026
10	Sercom	Strong evidence	Taboão Da Serra, BrazilHQ checked Sep 27, 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 27, 2026
11	TMKT	Strong evidence	Poa, BrazilHQ checked Sep 27, 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 27, 2026
12	Telvista	Partial evidence	Dallas, TX, United StatesHQ checked Sep 27, 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 27, 2026
13	VGX Contact Center	Indirect evidence	Montes Claros, BrazilHQ checked Sep 27, 2026	1,001-5,000	2,951 contacts →
	Indirect 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 27, 2026
14	Grupo Provider	Partial evidence	Recife, BrazilHQ checked Sep 27, 2026	1,001-5,000	2,531 contacts →
	Partial evidence “O Grupo Provider é uma companhia de excelência que atua no Brasil e no Exterior, desenvolvendo soluções inovadoras em produtos e serviços de gestão e operação de Call Center…” Source: RevenueBase Database · checked Sep 27, 2026
15	CAT Technologies Argentina	Strong evidence	Buenos Aires, ArgentinaHQ checked Sep 27, 2026	1,001-5,000	2,221 contacts →
	Strong evidence “Somos la compañía líder en Servicios Next Gen de Contact Center, Business Process Outsourcing (BPO) y Customer Experience (CX).” Source: RevenueBase Database · checked Sep 27, 2026
16	Vemsertahto	Indirect evidence	Goiania, BrazilHQ checked Sep 27, 2026	5,001-10,000	2,176 contacts →
	Indirect evidence “Somos a Tahto, uma empresa referência em soluções de CX e BPO.” Source: RevenueBase Database · checked Sep 27, 2026
17	Quantanite	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	1,001-5,000	1,991 contacts →
	Indirect 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 27, 2026
18	Sykes Philippines	Indirect evidence	Makati City, PhilippinesHQ checked Sep 27, 2026	10001+	1,990 contacts →
	Indirect evidence “Sitel Philippines (formerly SYKES).” Source: RevenueBase Database · checked Sep 27, 2026
19	Infocision Management Corporation	Strong evidence	Akron, OH, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,764 contacts →
	Strong evidence “InfoCision is an award-winning contact center partner trusted by leading brands for over 40 years.” Source: RevenueBase Database · checked Sep 27, 2026
20	Support Services Group	Partial evidence	Waco, TX, United StatesHQ checked Sep 27, 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 27, 2026
21	Dialamerica	Indirect evidence	Mahwah, NJ, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,536 contacts →
	Indirect evidence “DialAmerica is now Aucera.” Source: RevenueBase Database · checked Sep 27, 2026
22	Senture, LLC	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	1,001-5,000	1,473 contacts →
	Strong evidence “Senture provides comprehensive contact center service support nationally.” Source: RevenueBase Database · checked Sep 27, 2026
23	Outworx Contact Centre	Indirect evidence	Durban, South AfricaHQ checked Sep 27, 2026	1,001-5,000	1,453 contacts →
	Indirect evidence “One voice – let us be your voice.” Source: RevenueBase Database · checked Sep 27, 2026
24	Afiniti	Strong evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,334 contacts →
	Strong evidence “Afiniti is an AI-native company and the global leader in Outcome Orchestration, where we bring simplicity, transparency, and measurable results to complex contact centers.” Source: RevenueBase Database · checked Sep 27, 2026
25	Grupo Unísono	Indirect evidence	Madrid, SpainHQ checked Sep 27, 2026	n/a	1,306 contacts →
	Indirect evidence “At Unisono, for more than 20 years we have been working side by side with our customers across the globe to meet their demands as well as our own.” Source: RevenueBase Database · checked Sep 27, 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: contact center optimization software 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 contact center optimization software companies.
Partial evidence: Its own public description names part of contact center optimization software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name contact center optimization software 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 4,371 contact center optimization software companies worldwide

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Contact center optimization software companies worldwide at a glance

As of Sep 27, 2026

15.5%Verified-email coverage

51.1Average contacts per company

11-50Median size (employees)

2.4%Largest-city concentration · Sao Paulo

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

1,223

11-50

1,500

51-200

949

201-500

323

501-1,000

158

1,001-5,000

168

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 contact center optimization software 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 contact center optimization software companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “contact center optimization software 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 contact center optimization software 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 contact center optimization software 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, 34,621 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 27, 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.

Contact center optimization software companies by location

29 lists · largest first

Every Contact center optimization 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 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 contact center optimization software 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 contact center optimization software companies are there worldwide?

RevenueBase identified 4,371 contact center optimization software 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?

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

Which country has the most contact center optimization software companies?

The United States leads with 868 companies, followed by Brazil (283) and India (248). Every contact center optimization software companies list by country and city is linked on this page.

Which city has the most contact center optimization software companies?

Sao Paulo leads with 104 headquartered companies, followed by London (51) and Madrid (32).

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 34,621 verified decision-maker contacts tracked across these 4,371 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 27, 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.