Company lists · Data refreshed September 2026

Top 25 Inbound call center software companies worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 2,935 companies tracked

RevenueBase identified 2,935 inbound call center software companies worldwide as of September 2026 and tracks 75,927 professional contacts across them, including 6,983 with verified work emails. The United States is the largest market and Lahore the largest hub.

This list covers inbound 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 28, 2026. Country and city lists for inbound 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 28, 2026 86% judged on-target in blind review

2,935Companies

75,927Contacts tracked

6,983Verified emails

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The 25 largest inbound call center software companies worldwide

Ranked by team size

Top 25 of 2,935 inbound call center software companies worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to inbound 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 28, 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 28, 2026
2	CAT Technologies Argentina	Partial evidence	Buenos Aires, ArgentinaHQ checked Sep 28, 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 28, 2026
3	The Office Gurus	Strong evidence	St Petersburg, FL, RussiaHQ checked Sep 28, 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 28, 2026
4	crystel.co	Indirect evidence	Amman, JordanHQ checked Sep 28, 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 28, 2026
5	Hrhnext Services Limited	Partial evidence	Hyderabad, IndiaHQ checked Sep 28, 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 28, 2026
6	B2s Business Support Services	Indirect evidence	Gennevilliers Cedex, FranceHQ checked Sep 28, 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 28, 2026
7	Inktel Contact Center Solutions	Strong evidence	Doral, FL, United StatesHQ checked Sep 28, 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 28, 2026
8	Answernet	Indirect evidence	Horsham, PA, United StatesHQ checked Sep 28, 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 28, 2026
9	Vector	Partial evidence	Fortaleza, BrazilHQ checked Sep 28, 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 28, 2026
10	The Call Center Doctors	Strong evidence	Houston, TX, United StatesHQ checked Sep 28, 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 28, 2026
11	ATN Contact Center	Partial evidence	Rio De Janeiro, BrazilHQ checked Sep 28, 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 28, 2026
12	Deepija Telecom PVT LTD	Indirect evidence	Hyderabad, IndiaHQ checked Sep 28, 2026	201-500	527 contacts →
	Indirect evidence “Telecom Applications are one of the fastest-changing technologies of today.” Source: RevenueBase Database · checked Sep 28, 2026
13	American Customer Care	Indirect evidence	Bristol, CT, United StatesHQ checked Sep 28, 2026	1,001-5,000	513 contacts →
	Indirect evidence “American Customer Care specializes in providing individualized contact with your customers.” Source: RevenueBase Database · checked Sep 28, 2026
14	Transcosmos Malaysia	Strong evidence	Kuala Lumpur, MalaysiaHQ checked Sep 28, 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 28, 2026
15	Alvaria CX	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 28, 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 28, 2026
16	ECE Consulting Group	Indirect evidence	United StatesHQ checked Sep 28, 2026	n/a	474 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
17	Wyzmindz Solutions Pvt. LTD	Indirect evidence	Bangalore, IndiaHQ checked Sep 28, 2026	51-200	467 contacts →
	Indirect evidence “WyzMindz Solutions Pvt.” Source: RevenueBase Database · checked Sep 28, 2026
18	Digitech Call System Pvt. LTD	Indirect evidence	Noida, IndiaHQ checked Sep 28, 2026	5,001-10,000	467 contacts →
	Indirect evidence “DigiTech is one of the fastest growing Outsourcing & Offsourcing company in Delhi/NCR.” Source: RevenueBase Database · checked Sep 28, 2026
19	Proper Business Solutions	Strong evidence	Cairo, EgyptHQ checked Sep 28, 2026	1,001-5,000	447 contacts →
	Strong evidence “Proper Business solutions is offering a comprehensive suite of customer care call center services, outbound and lead generation, back-office and data processing solutions to…” Source: RevenueBase Database · checked Sep 28, 2026
20	Ansafone Contact Centers	Partial evidence	Santa Ana, CA, United StatesHQ checked Sep 28, 2026	501-1,000	431 contacts →
	Partial evidence “About : Ansafone is the leading outsourced contact center solution provider for companies in the US and Canada and maintains international alliances for global reach.” Source: RevenueBase Database · checked Sep 28, 2026
21	Magellan BPO	Indirect evidence	Mandaluyong City, PhilippinesHQ checked Sep 28, 2026	501-1,000	411 contacts →
	Indirect evidence “Magellan Solutions Outsourcing Inc.” Source: RevenueBase Database · checked Sep 28, 2026
22	Mervice Infotech Pvt. LTD	Partial evidence	Kolkata, IndiaHQ checked Sep 28, 2026	1,001-5,000	395 contacts →
	Partial evidence “As a company with the potential to establish a strong foothold within the BPO domain Mervice promises to go beyond ensuring quality inbound and outbound services.” Source: RevenueBase Database · checked Sep 28, 2026
23	Touchstone Communications	Indirect evidence	Fort Worth, TX, United StatesHQ checked Sep 28, 2026	501-1,000	393 contacts →
	Indirect evidence “Touchstone Communications was built in 2002 on the philosophy of hiring educated, motivated talent and then providing them with the best training and management to achieve our…” Source: RevenueBase Database · checked Sep 28, 2026
24	Voicenter S.A	Partial evidence	Cordoba, ArgentinaHQ checked Sep 28, 2026	501-1,000	384 contacts →
	Partial evidence “Nuestras soluciones de Sales Center, Contact Center y BPO están enfocadas en lograr los resultados esperados en cada proyecto que abordamos, optimizando al máximo el rendimiento…” Source: RevenueBase Database · checked Sep 28, 2026
25	Onbrand24	Strong evidence	Iowa City, United StatesHQ checked Sep 28, 2026	1,001-5,000	346 contacts →
	Strong evidence “As a distinguished global leader in call center outsourcing, OnBrand24 takes pride in its 30-year legacy of delivering exceptional inbound and outbound call center services across…” 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: inbound 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 inbound call center software companies.
Partial evidence: Its own public description names part of inbound 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 inbound 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 2,935 inbound call center software companies worldwide

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Inbound call center software companies worldwide at a glance

As of Sep 28, 2026

9.2%Verified-email coverage

25.9Average contacts per company

11-50Median size (employees)

1.5%Largest-city concentration · Lahore

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

607

11-50

1,063

51-200

753

201-500

270

501-1,000

127

1,001-5,000

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 inbound 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 inbound call center software companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “inbound 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 inbound 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 inbound 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, 6,983 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.

Inbound call center software companies by location

15 lists · largest first

Every Inbound 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

Inbound call center software companies based in London, United Kingdom28

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 inbound 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 inbound call center software companies are there worldwide?

RevenueBase identified 2,935 inbound 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 inbound call center software companies?

The United States leads with 533 companies, followed by India (309) and the United Kingdom (106). Every inbound call center software companies list by country and city is linked on this page.

Which city has the most inbound call center software companies?

Lahore leads with 44 headquartered companies, followed by Rawalpindi (39) and Karachi (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 6,983 verified decision-maker contacts tracked across these 2,935 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.

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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.