Company lists · Data refreshed September 2026

Top 25 Outbound call center software companies worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 4,009 companies tracked

RevenueBase identified 4,009 outbound call center software companies worldwide as of September 2026 and tracks 113,136 professional contacts across them, including 8,214 with verified work emails. The United States is the largest market and Rawalpindi the largest hub.

This list covers outbound call center 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 29, 2026. Country and city lists for outbound call center 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 29, 2026 86% judged on-target in blind review

4,009Companies

113,136Contacts tracked

8,214Verified emails

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The 25 largest outbound call center software companies worldwide

Ranked by team size

Top 25 of 4,009 outbound call center software companies worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to outbound call center 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	Advanced Call Center Technologies, LLC	Strong evidence	Berwyn, PA, United StatesHQ checked Sep 29, 2026	5,001-10,000	2,774 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026
2	CAT Technologies Argentina	Partial evidence	Buenos Aires, ArgentinaHQ checked Sep 29, 2026	1,001-5,000	2,221 contacts →
	Partial 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 29, 2026
3	Km2 Solutions	Indirect evidence	Boca Raton, FL, United StatesHQ checked Sep 29, 2026	5,001-10,000	1,741 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 29, 2026
4	Itelcx	Indirect evidence	Vieux Fort, JamaicaHQ checked Sep 29, 2026	1,001-5,000	1,354 contacts →
	Indirect evidence “itel is the Caribbean’s largest homegrown, award-winning customer experience (CX) partner, with operations across the Caribbean and Latin America.” Source: RevenueBase Database · checked Sep 29, 2026
5	American Call Center	Partial evidence	Guayaquil, EcuadorHQ checked Sep 29, 2026	1,001-5,000	1,225 contacts →
	Partial evidence “We deliver tailored Contact Center and Back Office solutions to our strategic partners, leveraging advanced technology and high quality standards to elevate customer experiences…” Source: RevenueBase Database · checked Sep 29, 2026
6	The Office Gurus	Strong evidence	St Petersburg, FL, RussiaHQ checked Sep 29, 2026	1,001-5,000	1,198 contacts →
	Strong evidence “The Office Gurus (TOG) is a global call center and business process outsource provider of customer care, telemarketing, lead generation, appointment setting, order entry, accounts…” Source: RevenueBase Database · checked Sep 29, 2026
7	crystel.co	Indirect evidence	Amman, JordanHQ checked Sep 29, 2026	1,001-5,000	1,128 contacts →
	Indirect evidence “Crystel emerged as a leading Outsourcing Service Provider (OSP) since its establishment in Jordan in early 2007.” Source: RevenueBase Database · checked Sep 29, 2026
8	Ventas Y Servicios S.A	Partial evidence	Bogotá D.c., ColombiaHQ checked Sep 29, 2026	1,001-5,000	1,116 contacts →
	Partial evidence “MISIÓN Somos una compañía de Contact Center y tercerización de procesos (Business Process Outsourcing BPO), rentable, con presencia nacional; que brinda soluciones ágiles y…” Source: RevenueBase Database · checked Sep 29, 2026
9	Hrhnext Services Limited	Partial evidence	Hyderabad, IndiaHQ checked Sep 29, 2026	1,001-5,000	1,076 contacts →
	Partial evidence “Even the markets know that we’re the good call’!” Source: RevenueBase Database · checked Sep 29, 2026
10	B2s Business Support Services	Indirect evidence	Gennevilliers Cedex, FranceHQ checked Sep 29, 2026	10001+	978 contacts →
	Indirect evidence “Expert de la relation client depuis 1996, b2s est le N°1 de l’externalisation de votre relation client en qualité délivrée.” Source: RevenueBase Database · checked Sep 29, 2026
11	Youtility Center DO Brasil	Partial evidence	Barra Mansa, BrazilHQ checked Sep 29, 2026	1,001-5,000	926 contacts →
	Partial evidence “A Youtility Center do Brasil faz parte do “Gruppo Distribuzione Spa”, com sede na Itália desde 1998.” Source: RevenueBase Database · checked Sep 29, 2026
12	Inktel Contact Center Solutions	Strong evidence	Doral, FL, United StatesHQ checked Sep 29, 2026	1,001-5,000	902 contacts →
	Strong evidence “Our Company Inktel is a leading business process outsourcer that specializes in creating personalized call center solutions which enable our clients to increase market share…” Source: RevenueBase Database · checked Sep 29, 2026
13	Answernet	Indirect evidence	Horsham, PA, United StatesHQ checked Sep 29, 2026	501-1,000	883 contacts →
	Indirect evidence “If you are interested in growing your business or increasing efficiency, AnswerNet has the expertise, technology, and people to help you take your company to new heights!” Source: RevenueBase Database · checked Sep 29, 2026
14	Focus Services	Indirect evidence	Roy, UT, United StatesHQ checked Sep 29, 2026	1,001-5,000	792 contacts →
	Indirect evidence “Focus was founded in 1995.” Source: RevenueBase Database · checked Sep 29, 2026
15	Vector	Partial evidence	Fortaleza, BrazilHQ checked Sep 29, 2026	1,001-5,000	701 contacts →
	Partial evidence “A VECTOR SERVIÇOS é uma empresa especializada na criação, implantação e gestão de serviços de Contact Center.” Source: RevenueBase Database · checked Sep 29, 2026
16	Fastco	Partial evidence	Providencia, ChileHQ checked Sep 29, 2026	1,001-5,000	623 contacts →
	Partial evidence “Impulsamos el éxito de nuestros clientes a través de soluciones personalizadas en Contact Center y experiencia al cliente.” Source: RevenueBase Database · checked Sep 29, 2026
17	The Call Center Doctors	Strong evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	501-1,000	561 contacts →
	Strong evidence “We build fully managed call centers: Software build outs Hiring Training Integrations” Source: RevenueBase Database · checked Sep 29, 2026
18	Global Contact Services GCS	Indirect evidence	Salisbury, NC, United StatesHQ checked Sep 29, 2026	501-1,000	542 contacts →
	Indirect evidence “We are customer service experts.” Source: RevenueBase Database · checked Sep 29, 2026
19	ATN Contact Center	Partial evidence	Rio De Janeiro, BrazilHQ checked Sep 29, 2026	1,001-5,000	529 contacts →
	Partial evidence “A ATN Contact Center é especialista em Relacionamento com Clientes e BPO, com 29 anos de experiência transformando a forma como empresas se conectam com seus consumidores.” Source: RevenueBase Database · checked Sep 29, 2026
20	Azpired	Strong evidence	Cebu City, PhilippinesHQ checked Sep 29, 2026	1,001-5,000	504 contacts →
	Strong evidence “AZPIRED is a world-class provider of call center outsourcing services, proudly operating multiple locations across the Philippines.” Source: RevenueBase Database · checked Sep 29, 2026
21	Transcosmos Malaysia	Strong evidence	Kuala Lumpur, MalaysiaHQ checked Sep 29, 2026	1,001-5,000	500 contacts →
	Strong evidence “Transcosmos Malaysia offer integrated call center services such as Call Center, Social Media Management, Voice Of Customer Analysis, Digital Marketing and eCommerce Solution that…” Source: RevenueBase Database · checked Sep 29, 2026
22	RESQ	Indirect evidence	Kingston Upon Hull, United KingdomHQ checked Sep 29, 2026	1,001-5,000	490 contacts →
	Indirect evidence “Give your customers a voice with ResQ.” Source: RevenueBase Database · checked Sep 29, 2026
23	Transcom India	Indirect evidence	Gurugram, IndiaHQ checked Sep 29, 2026	1,001-5,000	488 contacts →
	Indirect evidence “Welcome to the India page of Transcom!” Source: RevenueBase Database · checked Sep 29, 2026
24	Alvaria CX	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 29, 2026	1,001-5,000	478 contacts →
	Partial evidence “Alvaria CX, the global leader in contact center solutions, emerged from the 2021 merger of Noble Systems and Aspect, bringing over 50 years of CX innovation.” Source: RevenueBase Database · checked Sep 29, 2026
25	ECE Consulting Group	Indirect evidence	United StatesHQ checked Sep 29, 2026	n/a	474 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 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: outbound call center 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 outbound call center software companies.
Partial evidence: Its own public description names part of outbound call center software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name outbound call center 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 4,009 outbound call center software companies worldwide

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Outbound call center software companies worldwide at a glance

As of Sep 29, 2026

7.3%Verified-email coverage

28.2Average contacts per company

11-50Median size (employees)

1.8%Largest-city concentration · Rawalpindi

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

781

11-50

1,403

51-200

1,066

201-500

402

501-1,000

179

1,001-5,000

141

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 outbound call center 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 outbound call center software companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “outbound call center 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 outbound call center 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 outbound call center 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, 8,214 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 29, 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.

Outbound call center software companies by location

22 lists · largest first

Every Outbound call center 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 outbound call center 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 outbound call center software companies are there worldwide?

RevenueBase identified 4,009 outbound call center 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?

Advanced Call Center Technologies, LLC, headquartered in Berwyn, tops this list with the largest team on record.

Which country has the most outbound call center software companies?

The United States leads with 671 companies, followed by India (398) and the Philippines (149). Every outbound call center software companies list by country and city is linked on this page.

Which city has the most outbound call center software companies?

Rawalpindi leads with 74 headquartered companies, followed by Lahore (73) and Karachi (54).

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 8,214 verified decision-maker contacts tracked across these 4,009 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 29, 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.