Company lists · Data refreshed November 2026

Top 25 Call quality optimization consultants worldwide

RevenueBase identified 573 company matches for call quality optimization consultants worldwide as of November 2026 and tracks 7,909 professional contacts across them, including 686 with verified work emails. The United States is the largest market and Paris the largest hub.

This list covers company matches for call quality optimization consultants 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 November 6, 2026. Country and city lists for call quality optimization consultants 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 Nov 6, 2026 How this list was built
573Companies
7,909Contacts tracked
686Verified emails
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The 25 largest call quality optimization consultants worldwide

Ranked by team size
Top 25 of 573 company matches for call quality optimization consultants worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchSanto Domingo, Dominican RepublicHQ recorded Nov 6, 2026501-1,000322 contacts →

Exact match

“With today’s informed and interconnected consumers, businesses must go the extra mile to ensure the utmost level of customer service from their employees.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchWinter Park, United StatesHQ recorded Nov 6, 202651-200208 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchFort Myers, FL, United StatesHQ recorded Nov 6, 2026201-500201 contacts →

Exact match

“J.Lodge first opened its doors in and has become the recognized leader in the science of contact center monitoring and analysis.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchCartes, SpainHQ recorded Nov 6, 2026501-1,000172 contacts →

Exact match

“Somos un contact center especializado en gestión, venta y atención al cliente.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchLong Island, FL, United StatesHQ recorded Nov 6, 202651-200167 contacts →

Exact match

“BPA Quality is a woman owned business that provides contact centers with the insights to engineer great customer experiences every time through our expertise in quality…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchSisli, TürkiyeHQ recorded Nov 6, 2026501-1,000145 contacts →

Exact match

“İleri düzey satış stratejileri, memnuniyet ve anket hizmetleri, denetim aramaları, hizmet odaklı özel çalışmaları ile sektörde adından söz ettiren Pozitif Kurumsal A.Ş, alt…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchLima, PeruHQ recorded Nov 6, 2026201-500123 contacts →

Exact match

“Ofrecemos conocimiento y experiencia en la mejora continua de los servicios Contact Center.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchSingaporeHQ recorded Nov 6, 202651-200113 contacts →

Exact match

“AQ Services International is about changing the world of customer service, through our mission:'Driving Front line Performance'.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchEthekwini, South AfricaHQ recorded Nov 6, 202651-20088 contacts →

Exact match

“Our approach has been specifically designed with operational delivery in mind.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchDurban, South AfricaHQ recorded Nov 6, 202651-20087 contacts →

Exact match

“We are a specialist independent interaction quality monitoring service based in Durban, South Africa.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchCoeur D'alene, BC, United StatesHQ recorded Nov 6, 202651-20082 contacts →

Exact match

“Since 1996, SQM Group has been a recognized leader specializing in call center QA, CSAT prediction, customer experience analytics, CX benchmarking, and CSAT excellence awards.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchAndelst, NetherlandsHQ recorded Nov 6, 202651-20064 contacts →

Exact match

“Established in 2002, Vendere (Latin for ‘to sell’) is a marketing-orientated expert specialising in telephone communications – qualitative telemarketing, telesales and lead…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchKraków, PolandHQ recorded Nov 6, 2026501-1,00055 contacts →

Exact match

“Od 2008 roku świadczymy usługi dla wciąż rosnącego grona Klientów, zachowując najwyższe standardy jakości i obsługi.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSão Paulo, BrazilHQ recorded Nov 6, 202611-5052 contacts →

Exact match

“Um novo conceito em Contact Center!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchAlpharetta, GA, United StatesHQ recorded Nov 6, 202651-20049 contacts →

Exact match

“Concentra Solutions maximizes contact center performance through Quality Assurance, specializing in Compliance and Customer Experience.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchDubai, United Arab EmiratesHQ recorded Nov 6, 202611-5046 contacts →

Exact match

“CRM Middle East was founded in November 2001 to provide expert solutions and work closely with clients to help maximizing customer satisfaction and loyalty, thus boosting…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchUnited StatesHQ recorded Nov 6, 202651-20041 contacts →

Exact match

“Corporate Technologies Advantage, LLC (CTA) is a family owned and operated call center in Springfield MO.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchLewisville, TX, United StatesHQ recorded Nov 6, 202611-5040 contacts →

Exact match

“Founded in 1997, McIntosh is a management consulting firm specializing in contact center strategy, sourcing, and operations as well as customer experience (CX) strategy and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchSeville, SpainHQ recorded Nov 6, 202611-5040 contacts →

Exact match

“Take a Tip es una consultora especializada en proporcionar a las empresas medios con los que conseguir la excelencia en la calidad de los servicios que prestan a sus clientes.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchMexico City, MexicoHQ recorded Nov 6, 2026201-50040 contacts →

Exact match

“Proporcionar servicios de Call Center y promotoría para la comunicación u obtención de Información y la Comercialización de productos y servicios, con las características…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchBarcelona, SpainHQ recorded Nov 6, 202611-5038 contacts →

Exact match

“ADI CONSULTING Experience & Efficiency es la primera consultoría de operaciones de Contact Centers especializada en la mejora de los procesos de las áreas de Planificación…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBerlin, GermanyHQ recorded Nov 6, 202651-20036 contacts →

Exact match

“Die voxpark GmbH ist ein etabliertes und wachsendes Kundenservice-Center, das sich erfolgreich in den Bereichen Telemarketing und ganzheitliches Kundenmanagement positioniert hat.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchPortlaw, IrelandHQ recorded Nov 6, 202611-5035 contacts →

Exact match

“Emerald Contact Centre, part of the Agora group, delivers multilingual customer care and sales support for Agora Publishing brands worldwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchSeymour, TN, United StatesHQ recorded Nov 6, 202651-20035 contacts →

Exact match

“Call Center Sales Pro was formed to help outsource call centers and telephone answering services to reduce the pain of growing their business.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchDubai, United Arab EmiratesHQ recorded Nov 6, 202611-5031 contacts →

Exact match

“Customex is a portmanteau for Customer Experience.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 573 call quality optimization consultants worldwide

See the full list, filter by size, metro and specialty, and access 686 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Call quality optimization consultants worldwide at a glance

As of Nov 6, 2026
8.7%Verified-email coverage
13.8Average contacts per company
11-50Median size (employees)
1.2%Largest-city concentration · Paris
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
280
11-50
172
51-200
87
201-500
18
501-1,000
12
1,001-5,000
2
5,001-10,000
1
10001+
1

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 call quality optimization consultants are linked below.
What qualifies
Company records worldwide whose business descriptions match “call quality optimization consultants” 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 686 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 November 6, 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.

Call quality optimization consultants by location

1 lists · largest first

Every Call quality optimization consultants list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 “call quality optimization consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many call quality optimization consultants are there worldwide?

RevenueBase identified 573 company matches for call quality optimization consultants worldwide as of November 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?

Trueshore tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most call quality optimization consultants?

The United States leads with 111 companies. Every call quality optimization consultants list by country and city is linked on this page.

Which city has the most call quality optimization consultants?

Paris leads with 7 company records, followed by Sao Paulo (7) and Buenos Aires (6).

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 686 professional contacts with verified work emails tracked across these 573 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 November 6, 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.