Company lists · Data refreshed September 2026
Top 25 Call center optimization firms worldwide
RevenueBase identified 4,259 company matches for call center optimization firms worldwide as of September 2026 and tracks 224,968 professional contacts across them, including 25,175 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.
This list covers company matches for call center optimization firms 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 September 27, 2026. Country and city lists for call center optimization firms 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.
The 25 largest call center optimization firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 30,990 contacts → | ||||
Exact match “Foundever® is the next-generation service leader reinventing customer experience (CX).” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 2 | 20,095 contacts → | ||||
Exact match “A AeC é apontada consistentemente como a líder brasileira na entrega de soluções de experiência do cliente e gestão de processos terceirizados.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 3 | 17,310 contacts → | ||||
Exact match “iQor is a trusted partner in customer experience solutions for global brands and a portfolio company of Mill Point Capital.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 4 | 14,976 contacts → | ||||
Exact match “A global customer experience (CX) management solutions provider, Startek® delivers best-in-class omnichannel CX, digital transformation and enterprise tech services for leading…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 5 | 6,167 contacts → | ||||
Exact match “Bir Turkcell grup şirketi olarak yılında kurulduğumuzda amacımız hep eşsiz bir müşteri deneyimi yaşatmaktı.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 6 | 4,785 contacts → | ||||
Exact match “At Fusion CX, we revolutionize customer experience by blending innovative technology and human connection.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 7 | 4,126 contacts → | ||||
Exact match “Mais que call center: soluções que transformam o seu negócio e a jornada dos clientes!” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 8 | 3,122 contacts → | ||||
Exact match “Email: info@Telvista.com Telvista is a premier provider of contact solutions that drive customer loyalty and create competitive advantage for our clients.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 9 | 2,774 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 10 | 2,552 contacts → | ||||
Exact match “Com 19 anos de experiência em CX e BPO, somos consultivos e entregamos soluções personalizadas que conectam pessoas e tecnologia para impulsionar seus resultados.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 11 | 2,221 contacts → | ||||
Exact match “Somos la compañía líder en Servicios Next Gen de Contact Center, Business Process Outsourcing (BPO) y Customer Experience (CX).” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 12 | 1,990 contacts → | ||||
Exact match “Sitel Philippines (formerly SYKES).” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 13 | 1,777 contacts → | ||||
Exact match “OP360, part of iQor CXBPO™, is a trusted partner in intelligent customer experience solutions for global brands.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 14 | 1,764 contacts → | ||||
Exact match “InfoCision is an award-winning contact center partner trusted by leading brands for over 40 years.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 15 | 1,225 contacts → | ||||
Exact match “We deliver tailored Contact Center and Back Office solutions to our strategic partners, leveraging advanced technology and high quality standards to elevate customer experiences…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 16 | 1,198 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 17 | 1,076 contacts → | ||||
Exact match “Even the markets know that we’re the good call’!” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 18 | 983 contacts → | ||||
Exact match “MCI is a global leader in tech-enabled business services, simplifying contact center outsourcing for brands worldwide.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 19 | 902 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 20 | 883 contacts → | ||||
Exact match “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!” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 21 | 878 contacts → | ||||
Exact match “Decades of expertise distilled into innovative workforce tools.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 22 | 877 contacts → | ||||
Exact match “CBE Companies is the parent organization of CBE Customer Solutions and CBE Group.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 23 | 867 contacts → | ||||
Exact match “Virtual Staffing Solutions (VSS), a Waterstone Company We are not a recruiting firm or placement agency.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 24 | 792 contacts → | ||||
Exact match “Focus was founded in 1995.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 25 | 708 contacts → | ||||
Exact match “ClearSource at its core is a customer experience company.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “call center optimization firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 4,259 call center optimization firms worldwide
See the full list, filter by size, metro and specialty, and access 25,175 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Call center optimization firms worldwide at a glance
As of Sep 27, 2026Companies by employee count
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 center optimization firms are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “call center optimization firms” 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 25,175 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 September 27, 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 center optimization firms by location
19 lists · largest firstEvery Call center optimization firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Call center optimization firms based in the United States886
- Call center optimization firms based in India224
- Call center optimization firms based in Brazil173
- Call center optimization firms based in the United Kingdom135
- Call center optimization firms based in Canada123
- Call center optimization firms based in Italy101
- Call center optimization firms based in the Philippines99
- Call center optimization firms based in Germany94
- Call center optimization firms based in Mexico88
- Call center optimization firms based in Spain76
- Call center optimization firms based in France63
- Call center optimization firms based in Türkiye63
- Call center optimization firms based in the Netherlands56
- Call center optimization firms based in South Africa55
- Call center optimization firms based in Argentina48
- Call center optimization firms based in Australia46
- Call center optimization firms based in Poland38
- Call center optimization firms based in Israel32
- Call center optimization firms based in Chile29
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 center optimization firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many call center optimization firms are there worldwide?
RevenueBase identified 4,259 company matches for call center optimization firms worldwide as of September 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?
Foundever tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most call center optimization firms?
The United States leads with 886 companies, followed by India (224) and Brazil (173). Every call center optimization firms list by country and city is linked on this page.
Which city has the most call center optimization firms?
Sao Paulo leads with 58 company records, followed by Lahore (51) and Rawalpindi (45).
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 25,175 professional contacts with verified work emails tracked across these 4,259 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 September 27, 2026.
Ready to reach these companies? Verified emails and direct dials for all 4,259 call center optimization firms worldwide. Start with a free account, no credit card.
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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.
More company lists
Company intelligence · public preview
Top 25 call center optimization firms worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 4,259 matching company records for call center optimization firms worldwide, with 224,968 tracked contacts and 25,175 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 27, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 call center optimization firms worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Foundeverfoundever.comHQ: Miami, FL, United StatesReported employees: 10001+ | Miami, FL, United States | 10001+ | Exact match | 30,990 contacts → |
“Foundever® is the next-generation service leader reinventing customer experience (CX).” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  AECaec.com.brHQ: Belo Horizonte, BrazilReported employees: 10001+ | Belo Horizonte, Brazil | 10001+ | Exact match | 20,095 contacts → |
“A AeC é apontada consistentemente como a líder brasileira na entrega de soluções de experiência do cliente e gestão de processos terceirizados.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  IQORiqor.comHQ: Fort Lauderdale, FL, United StatesReported employees: 10001+ | Fort Lauderdale, FL, United States | 10001+ | Exact match | 17,310 contacts → |
“iQor is a trusted partner in customer experience solutions for global brands and a portfolio company of Mill Point Capital.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Startekstartek.comHQ: Denver, United StatesReported employees: 10001+ | Denver, United States | 10001+ | Exact match | 14,976 contacts → |
“A global customer experience (CX) management solutions provider, Startek® delivers best-in-class omnichannel CX, digital transformation and enterprise tech services for leading…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Turkcell Global Bilgiglobalbilgi.com.trHQ: Beyoglu, TürkiyeReported employees: 10001+ | Beyoglu, Türkiye | 10001+ | Exact match | 6,167 contacts → |
“Bir Turkcell grup şirketi olarak yılında kurulduğumuzda amacımız hep eşsiz bir müşteri deneyimi yaşatmaktı.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Fusion CXfusioncx.comHQ: Norcross, GA, United StatesReported employees: 10001+ | Norcross, GA, United States | 10001+ | Exact match | 4,785 contacts → |
“At Fusion CX, we revolutionize customer experience by blending innovative technology and human connection.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Callinkcallink.com.brHQ: Uberlândia, BrazilReported employees: 5,001-10,000 | Uberlândia, Brazil | 5,001-10,000 | Exact match | 4,126 contacts → |
“Mais que call center: soluções que transformam o seu negócio e a jornada dos clientes!” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Telvistatelvista.comHQ: Dallas, TX, United StatesReported employees: 1,001-5,000 | Dallas, TX, United States | 1,001-5,000 | Exact match | 3,122 contacts → |
“Email: info@Telvista.com Telvista is a premier provider of contact solutions that drive customer loyalty and create competitive advantage for our clients.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Advanced Call Center Technologies, LLCacttoday.comHQ: Berwyn, PA, United StatesReported employees: 5,001-10,000 | Berwyn, PA, United States | 5,001-10,000 | Exact match | 2,774 contacts → |
“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…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  TAHTOtahto.com.brHQ: Goiânia, BrazilReported employees: 10001+ | Goiânia, Brazil | 10001+ | Exact match | 2,552 contacts → |
“Com 19 anos de experiência em CX e BPO, somos consultivos e entregamos soluções personalizadas que conectam pessoas e tecnologia para impulsionar seus resultados.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  CAT Technologies Argentinacat-technologies.comHQ: Buenos Aires, ArgentinaReported employees: 1,001-5,000 | Buenos Aires, Argentina | 1,001-5,000 | Exact match | 2,221 contacts → |
“Somos la compañía líder en Servicios Next Gen de Contact Center, Business Process Outsourcing (BPO) y Customer Experience (CX).” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Sykes Philippinessitel.com HQ: Makati City, PhilippinesReported employees: 10001+ | Makati City, Philippines | 10001+ | Exact match | 1,990 contacts → |
“Sitel Philippines (formerly SYKES).” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Op360 Officepartners360op360.comHQ: Ridgefield, CT, United StatesReported employees: 1,001-5,000 | Ridgefield, CT, United States | 1,001-5,000 | Exact match | 1,777 contacts → |
“OP360, part of iQor CXBPO™, is a trusted partner in intelligent customer experience solutions for global brands.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Infocision Management Corporationinfocision.comHQ: Akron, OH, United StatesReported employees: 1,001-5,000 | Akron, OH, United States | 1,001-5,000 | Exact match | 1,764 contacts → |
“InfoCision is an award-winning contact center partner trusted by leading brands for over 40 years.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  American Call Centeracc.com.ecHQ: Guayaquil, EcuadorReported employees: 1,001-5,000 | Guayaquil, Ecuador | 1,001-5,000 | Exact match | 1,225 contacts → |
“We deliver tailored Contact Center and Back Office solutions to our strategic partners, leveraging advanced technology and high quality standards to elevate customer experiences…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  The Office Gurustheofficegurus.comHQ: St Petersburg, FL, RussiaReported employees: 1,001-5,000 | St Petersburg, FL, Russia | 1,001-5,000 | Exact match | 1,198 contacts → |
“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…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Hrhnext Services Limitedhrhnext.comHQ: Hyderabad, IndiaReported employees: 1,001-5,000 | Hyderabad, India | 1,001-5,000 | Exact match | 1,076 contacts → |
“Even the markets know that we’re the good call’!” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  MCImci.worldHQ: Iowa City, NS, United StatesReported employees: 5,001-10,000 | Iowa City, NS, United States | 5,001-10,000 | Exact match | 983 contacts → |
“MCI is a global leader in tech-enabled business services, simplifying contact center outsourcing for brands worldwide.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Inktel Contact Center Solutionsinktel.comHQ: Doral, FL, United StatesReported employees: 1,001-5,000 | Doral, FL, United States | 1,001-5,000 | Exact match | 902 contacts → |
“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…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Answernetanswernet.comHQ: Horsham, PA, United StatesReported employees: 501-1,000 | Horsham, PA, United States | 501-1,000 | Exact match | 883 contacts → |
“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!” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Aspect Softwareaspect.comHQ: Boulder, CO, United StatesReported employees: 1,001-5,000 | Boulder, CO, United States | 1,001-5,000 | Exact match | 878 contacts → |
“Decades of expertise distilled into innovative workforce tools.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  CBE Companiescbecompanies.comHQ: Cedar Falls, IA, United StatesReported employees: 1,001-5,000 | Cedar Falls, IA, United States | 1,001-5,000 | Exact match | 877 contacts → |
“CBE Companies is the parent organization of CBE Customer Solutions and CBE Group.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Virtual Staffing Solutionsvirtualstaffing.netHQ: Ormoc City, PhilippinesReported employees: 1,001-5,000 | Ormoc City, Philippines | 1,001-5,000 | Exact match | 867 contacts → |
“Virtual Staffing Solutions (VSS), a Waterstone Company We are not a recruiting firm or placement agency.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Focus Servicesfocusservices.comHQ: Roy, UT, United StatesReported employees: 1,001-5,000 | Roy, UT, United States | 1,001-5,000 | Exact match | 792 contacts → |
“Focus was founded in 1995.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Clearsource BPOclearsourcebpo.comHQ: Sandy, UT, United StatesReported employees: 1,001-5,000 | Sandy, UT, United States | 1,001-5,000 | Exact match | 708 contacts → |
“ClearSource at its core is a customer experience company.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 4,259 company matches
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Call center optimization firms: dataset insights
September 27, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
4,253 records in the displayed employee bands.
6 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 4,259 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 27, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Call center optimization firms by location
19 lists · largest firstEvery Call center optimization firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Call center optimization firms based in the United States886
- Call center optimization firms based in India224
- Call center optimization firms based in Brazil173
- Call center optimization firms based in the United Kingdom135
- Call center optimization firms based in Canada123
- Call center optimization firms based in Italy101
- Call center optimization firms based in the Philippines99
- Call center optimization firms based in Germany94
- Call center optimization firms based in Mexico88
- Call center optimization firms based in Spain76
- Call center optimization firms based in France63
- Call center optimization firms based in Türkiye63
- Call center optimization firms based in the Netherlands56
- Call center optimization firms based in South Africa55
- Call center optimization firms based in Argentina48
- Call center optimization firms based in Australia46
- Call center optimization firms based in Poland38
- Call center optimization firms based in Israel32
- Call center optimization firms based in Chile29
Questions about this company list
What does Exact match mean for call center optimization firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many call center optimization firms did RevenueBase find worldwide?
The saved snapshot records 4,259 matching company records, 224,968 tracked contacts and 25,175 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 27, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 call center optimization firms worldwide. Snapshot: September 27, 2026. https://revenuebase.ai/companies/browse/call-center-optimization-firms.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 call center optimization firms worldwide
RevenueBase records 4,259 matching company records for call center optimization firms worldwide, with 224,968 tracked contacts and 25,175 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 27, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 call center optimization firms worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Foundeverfoundever.com HQ: Miami, FL, United StatesReported employees: 10001+ | Miami, FL, United States | 10001+ | Exact match | 30,990 contacts → |
“Foundever® is the next-generation service leader reinventing customer experience (CX).” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | AECaec.com.br HQ: Belo Horizonte, BrazilReported employees: 10001+ | Belo Horizonte, Brazil | 10001+ | Exact match | 20,095 contacts → |
“A AeC é apontada consistentemente como a líder brasileira na entrega de soluções de experiência do cliente e gestão de processos terceirizados.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | IQORiqor.com HQ: Fort Lauderdale, FL, United StatesReported employees: 10001+ | Fort Lauderdale, FL, United States | 10001+ | Exact match | 17,310 contacts → |
“iQor is a trusted partner in customer experience solutions for global brands and a portfolio company of Mill Point Capital.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Startekstartek.com HQ: Denver, United StatesReported employees: 10001+ | Denver, United States | 10001+ | Exact match | 14,976 contacts → |
“A global customer experience (CX) management solutions provider, Startek® delivers best-in-class omnichannel CX, digital transformation and enterprise tech services for leading…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Turkcell Global Bilgiglobalbilgi.com.tr HQ: Beyoglu, TürkiyeReported employees: 10001+ | Beyoglu, Türkiye | 10001+ | Exact match | 6,167 contacts → |
“Bir Turkcell grup şirketi olarak yılında kurulduğumuzda amacımız hep eşsiz bir müşteri deneyimi yaşatmaktı.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Fusion CXfusioncx.com HQ: Norcross, GA, United StatesReported employees: 10001+ | Norcross, GA, United States | 10001+ | Exact match | 4,785 contacts → |
“At Fusion CX, we revolutionize customer experience by blending innovative technology and human connection.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Callinkcallink.com.br HQ: Uberlândia, BrazilReported employees: 5,001-10,000 | Uberlândia, Brazil | 5,001-10,000 | Exact match | 4,126 contacts → |
“Mais que call center: soluções que transformam o seu negócio e a jornada dos clientes!” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Telvistatelvista.com HQ: Dallas, TX, United StatesReported employees: 1,001-5,000 | Dallas, TX, United States | 1,001-5,000 | Exact match | 3,122 contacts → |
“Email: info@Telvista.com Telvista is a premier provider of contact solutions that drive customer loyalty and create competitive advantage for our clients.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Advanced Call Center Technologies, LLCacttoday.com HQ: Berwyn, PA, United StatesReported employees: 5,001-10,000 | Berwyn, PA, United States | 5,001-10,000 | Exact match | 2,774 contacts → |
“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…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | TAHTOtahto.com.br HQ: Goiânia, BrazilReported employees: 10001+ | Goiânia, Brazil | 10001+ | Exact match | 2,552 contacts → |
“Com 19 anos de experiência em CX e BPO, somos consultivos e entregamos soluções personalizadas que conectam pessoas e tecnologia para impulsionar seus resultados.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | CAT Technologies Argentinacat-technologies.com HQ: Buenos Aires, ArgentinaReported employees: 1,001-5,000 | Buenos Aires, Argentina | 1,001-5,000 | Exact match | 2,221 contacts → |
“Somos la compañía líder en Servicios Next Gen de Contact Center, Business Process Outsourcing (BPO) y Customer Experience (CX).” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Sykes Philippinessitel.com HQ: Makati City, PhilippinesReported employees: 10001+ | Makati City, Philippines | 10001+ | Exact match | 1,990 contacts → |
“Sitel Philippines (formerly SYKES).” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Op360 Officepartners360op360.com HQ: Ridgefield, CT, United StatesReported employees: 1,001-5,000 | Ridgefield, CT, United States | 1,001-5,000 | Exact match | 1,777 contacts → |
“OP360, part of iQor CXBPO™, is a trusted partner in intelligent customer experience solutions for global brands.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Infocision Management Corporationinfocision.com HQ: Akron, OH, United StatesReported employees: 1,001-5,000 | Akron, OH, United States | 1,001-5,000 | Exact match | 1,764 contacts → |
“InfoCision is an award-winning contact center partner trusted by leading brands for over 40 years.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | American Call Centeracc.com.ec HQ: Guayaquil, EcuadorReported employees: 1,001-5,000 | Guayaquil, Ecuador | 1,001-5,000 | Exact match | 1,225 contacts → |
“We deliver tailored Contact Center and Back Office solutions to our strategic partners, leveraging advanced technology and high quality standards to elevate customer experiences…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | The Office Gurustheofficegurus.com HQ: St Petersburg, FL, RussiaReported employees: 1,001-5,000 | St Petersburg, FL, Russia | 1,001-5,000 | Exact match | 1,198 contacts → |
“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…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Hrhnext Services Limitedhrhnext.com HQ: Hyderabad, IndiaReported employees: 1,001-5,000 | Hyderabad, India | 1,001-5,000 | Exact match | 1,076 contacts → |
“Even the markets know that we’re the good call’!” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | MCImci.world HQ: Iowa City, NS, United StatesReported employees: 5,001-10,000 | Iowa City, NS, United States | 5,001-10,000 | Exact match | 983 contacts → |
“MCI is a global leader in tech-enabled business services, simplifying contact center outsourcing for brands worldwide.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Inktel Contact Center Solutionsinktel.com HQ: Doral, FL, United StatesReported employees: 1,001-5,000 | Doral, FL, United States | 1,001-5,000 | Exact match | 902 contacts → |
“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…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Answernetanswernet.com HQ: Horsham, PA, United StatesReported employees: 501-1,000 | Horsham, PA, United States | 501-1,000 | Exact match | 883 contacts → |
“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!” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Aspect Softwareaspect.com HQ: Boulder, CO, United StatesReported employees: 1,001-5,000 | Boulder, CO, United States | 1,001-5,000 | Exact match | 878 contacts → |
“Decades of expertise distilled into innovative workforce tools.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | CBE Companiescbecompanies.com HQ: Cedar Falls, IA, United StatesReported employees: 1,001-5,000 | Cedar Falls, IA, United States | 1,001-5,000 | Exact match | 877 contacts → |
“CBE Companies is the parent organization of CBE Customer Solutions and CBE Group.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Virtual Staffing Solutionsvirtualstaffing.net HQ: Ormoc City, PhilippinesReported employees: 1,001-5,000 | Ormoc City, Philippines | 1,001-5,000 | Exact match | 867 contacts → |
“Virtual Staffing Solutions (VSS), a Waterstone Company We are not a recruiting firm or placement agency.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Focus Servicesfocusservices.com HQ: Roy, UT, United StatesReported employees: 1,001-5,000 | Roy, UT, United States | 1,001-5,000 | Exact match | 792 contacts → |
“Focus was founded in 1995.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Clearsource BPOclearsourcebpo.com HQ: Sandy, UT, United StatesReported employees: 1,001-5,000 | Sandy, UT, United States | 1,001-5,000 | Exact match | 708 contacts → |
“ClearSource at its core is a customer experience company.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 4,259 company matches
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Call center optimization firms: dataset insights
September 27, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
4,253 records in the displayed employee bands.
6 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 4,259 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 27, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Call center optimization firms by location
19 lists · largest firstEvery Call center optimization firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Call center optimization firms based in the United States886
- Call center optimization firms based in India224
- Call center optimization firms based in Brazil173
- Call center optimization firms based in the United Kingdom135
- Call center optimization firms based in Canada123
- Call center optimization firms based in Italy101
- Call center optimization firms based in the Philippines99
- Call center optimization firms based in Germany94
- Call center optimization firms based in Mexico88
- Call center optimization firms based in Spain76
- Call center optimization firms based in France63
- Call center optimization firms based in Türkiye63
- Call center optimization firms based in the Netherlands56
- Call center optimization firms based in South Africa55
- Call center optimization firms based in Argentina48
- Call center optimization firms based in Australia46
- Call center optimization firms based in Poland38
- Call center optimization firms based in Israel32
- Call center optimization firms based in Chile29
Questions about this company list
What does Exact match mean for call center optimization firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many call center optimization firms did RevenueBase find worldwide?
The saved snapshot records 4,259 matching company records, 224,968 tracked contacts and 25,175 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 27, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
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Cite this list
RevenueBase Data Team. Top 25 call center optimization firms worldwide. Snapshot: September 27, 2026. https://revenuebase.ai/companies/browse/call-center-optimization-firms.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗