Top 100 Call Center Services
The Best of December 2025
Outsourced call center services refer to handling incoming and outgoing calls on behalf of businesses to support functions such as customer service, lead generation, and appointment setting. Call center services are crucial to ensuring customers have a positive experience with their business before, during, and after purchasing. Investing in quality call center solutions is important for timely responses to key stakeholders, gathering feedback, and understanding customer preferences.
Call centers are a type of BPO that focuses on training and hiring dedicated agents who can handle customer inquiries, resolve customer issues and complaints, and provide technical support. They contribute to businesses' productivity and long-term success, allowing them to focus on core functions while managing customers professionally and efficiently.
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List of the Best Voice Services Providers on the Market
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$1,000+250 - 999 employeesOrlando, FLRead More
Answering service company XACT was founded in 1998. Their midsize team is in Orlando, Florida and Unity, Maine. XACT focuses on Call Center Services, Customer Service Outsourcing, Sales Outsourcing, Back Office Outsourcing, and more.
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$1,000+1,000 - 9,999 employeesChicago, ILEstablished in 2017, Hugo Inc. Is a Customer Service Outsourcing company. The agency specializes in Customer Service Outsourcing, Call Center Services, Back Office Outsourcing, Content Moderation Services, and more and has a large team. The agency is in Chicago, Illinois and Lagos, Nigeria.Read More
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2761$1,000+2 - 9 employeesRohence - B2B Lead Generation Agency is an Advertising company. Established in 2021, the firm specializes in Advertising and Social Media Marketing.Read More
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2762Undisclosed2 - 9 employeesEstablished in 2025, AppointiX is a small Customer Service Outsourcing company. Their team offers Customer Service Outsourcing and Sales Outsourcing.Read More
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2763$5,000+2 - 9 employeesNousu is a Direct Marketing company founded in 2024. The team provides Direct Marketing and Business Consulting.Read More
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2764$1,000+2 - 9 employeesAccumed BPO is a call center service. They were launched in 2020 and focus on Call Center Services and Back Office Outsourcing.Read More
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2765Undisclosed2 - 9 employeesEstablished in 2024, RelyMediaUS is a Business Consulting company. The team provides Business Consulting and Call Center Services.Read More
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2766$1,000+2 - 9 employeesPro On Day is a small telephone answering service founded in 2024. Their team offers Call Center Services and Back Office Outsourcing.Read More
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2767Undisclosed2 - 9 employeesThe SEO Bull is a Sales Outsourcing company. Founded in 2025, the firm is located in New Delhi, India. Their services include Sales Outsourcing and Branding.Read More
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2768Undisclosed2 - 9 employeesMultiplyOutreach is an Email Marketing company. Based in Berlin, Germany, the agency was founded in 2024. Their services include Email Marketing and Call Center Services.Read More
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2769$25,000+2 - 9 employeesLaunched in 2025, CBM GROUPS is a small Jamshedpur, India-based phone answering service. Their team provides Call Center Services and Back Office Outsourcing.Read More
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2770Undisclosed2 - 9 employeesBack Office Outsourcing company ClaimSync Solutions was launched in 2024. The agency focuses on Back Office Outsourcing and Call Center Services, and is small.Read More
Industries
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2771$1,000+2 - 9 employeesNexora Precision Solutions is a Business Consulting company. They focus on Business Consulting and Call Center Services and are in Gainesville, Virginia.Read More
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2772Undisclosed2 - 9 employeesNovasource BPO is a Business Consulting company in Islamabad, Pakistan. The team focuses on Business Consulting and Call Center Services.Read More
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2773Undisclosed2 - 9 employeesBattaron (PK), a Sales Outsourcing company, is located in Islamabad, Pakistan. The team offers Sales Outsourcing and Web Design.Read More
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2774Undisclosed2 - 9 employeesOsterholz-Scharmbeck, GermanyEternaScale is a small Sales Outsourcing company. Founded in 2025, the team focuses on Sales Outsourcing and Email Marketing.Read More
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2775$1,000+2 - 9 employeesSales Outsourcing company Carnivore Consultants is headquartered in Oakville, Canada. They provide Sales Outsourcing and Manufacturing Consulting.Read More
Industries
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2776$1,000+2 - 9 employeesBengaluru, IndiaLaunched in 2025, NexESP Revenue Labs is a Business Consulting company. Headquartered in Bengaluru, India, the team focuses on Business Consulting and Sales Outsourcing.Read More
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2777Undisclosed2 - 9 employeesLaunched in 2022, Affix Solution is an artificial intelligence firm. The agency focuses on Artificial Intelligence and Call Center Services, and is small.Read More
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2778$1,000+2 - 9 employeesLaunched in 2025, Ren Agency is a social media marketing firm. The team focuses on Social Media Marketing and Email Marketing.Read More
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2779Undisclosed2 - 9 employeesnew york, NYCoolsAssist is a small phone answering service located in new york, New York. Their services include Call Center Services and Back Office Outsourcing.Read More
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2780$5,000+2 - 9 employeesRingHouse is a telephone answering service. They are headquartered in Austin, Texas and have small team of experts. Their services include Call Center Services and Artificial Intelligence.Read More
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2781$1,000+2 - 9 employeesFounded in 2022, All4Data is a conversion optimization company. The small Buenos Aires, Argentina-based team provides conversion optimization, BI & big data consulting & SI, demand generation marketing, Artificial Intelligence, and more.Read More
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2782$10,000+2 - 9 employeesLake Oswego, ORBusiness Consulting company Maramba Consulting is in Lake Oswego, Oregon. They provide Business Consulting and CRM consulting and SI and were launched in 2017.Read More
Industries
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2783$1,000+10 - 49 employeesCastaic, CAHuman Medical Billing is a Back Office Outsourcing company. Headquartered in Castaic, California and Los Angeles, California, the firm provides Back Office Outsourcing and Call Center Services.Read More
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2784$1,000+10 - 49 employeesMumbai, IndiaContract Manufacturing company Marc Steel India was founded in 2010. The small team offers Contract Manufacturing and Other Marketing.Read More
Industries
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2785$1,000+10 - 49 employeesHeadquartered in Noida, India, Jinactus Consulting is a Marketing Strategy company. Their services include Marketing Strategy and Custom Software Development.Read More
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2786Undisclosed10 - 49 employeesPoole, EnglandBranding agency Coda focuses on Branding and Marketing Strategy. They are based in Poole, England.Read More
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2787$10,000+10 - 49 employeesLondon, EnglandFounded in 2015, CAPRI is a branding agency. Their services include Branding and UX/UI Design.Read More
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2788Undisclosed10 - 49 employeesKutaisi, GeorgiaA1 Telecom is an IT managed services company. Founded in 2017, their team offers IT managed services and Call Center Services.Read More
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2789$10,000+10 - 49 employeesBolingbrook, ILEstablished in 2020, Christian Banach is an Account-Based Marketing company. The team specializes in Account-Based Marketing and Sales Outsourcing.Read More
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2790Undisclosed10 - 49 employeesExpert Locksmith Services is a small Business Consulting company located in Phoenix, Arizona. Their services include Business Consulting and Back Office Outsourcing.Read More
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