Top 100 Call Center Services

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Top 100 Call Center Services

November 2023
Call center companies have been dominating the industry thanks to their cost-effective and quality services. They help connect businesses and customers by answering their questions regarding their products and services. 
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List of the Best Voice Services Providers on the Market

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  • 4
    • Scheduling

      4.9
    • Quality

      4.9
    • Cost

      4.8
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 50 - 249 employees
    • Denver, CO

    Belkins is a technology company that leverages proprietary technology and a unique methodology to set appointments with target client prospects for revenue leaders in a variety of industries. Our award-winning, blended SAAS and Service model has been fine-tuned over the last 5 years and has supported hundreds of clients globally.

    Clients

    • Cengage
    • Omnicharge
    • Sekisui Products
    • Born & Bred Creative

    Industries

    Notable Project

    Belkins created email templates and implemented a LinkedIn outreach strategy for a design company. They monitored campaigns for ongoing optimization and built a database of high-quality prospects.

    "Their data-driven insights were invaluable."

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  • 5
    • Scheduling

      4.9
    • Quality

      4.8
    • Cost

      4.7
    • NPS

      4.8
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 50 - 249 employees
    • Oakville, Canada

    Martal Group is a sales agency based in Oakville, Canada and San Francisco. Founded in 2009, their team currently consists of 70 employees, who serve mostly technology companies in SaaS, Enterprise software and IT sectors. They offer services in outbound lead generation, appointment setting, account management, and sales.

    Clients

    • Bosch
    • Zoho
    • Halo
    • MicroFocus

    Industries

    Notable Project

    A sales technology company has hired Martal Group to help expand their platform's user adoption. The team has worked closely with the client to make their conversion acceleration process more efficient.

    "The knowledge and experience of Martal Group's sales team are what sets them apart."

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  • 6
    • $1,000+
    • 1,000 - 9,999 employees
    • Denver, CO

    Cience is a PaaS (People as a Service) company based in Los Angeles. It has offices in Ukraine and Manila and was established in 2015. Their team of more than 550 employees offers voice services, conversion optimization, and CRM consulting and SI services. 

    Clients

    • Nasdaq
    • US Bank
    • Salesforce
    • Google

    Industries

    Notable Project

    CIENCE Technologies provided appointment-setting and cold-calling services for an IT services and solutions company. This also involved outreach campaigns, cold emailing, and cold messaging on LinkedIn.

    "The appointment generation process was impressive." 

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  • 7
    • Scheduling

      4.9
    • Quality

      4.9
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 50 - 249 employees
    • Boca Raton, FL

    SalesRoads is a B2B appointment setting and lead generation provider based in Coral Springs, Fla. that was established in 2006. Their team of more than 30 employees offers sales outsourcing and telemarketing services.

    Industries

    Notable Project

    SalesRoads provides sales outsourcing support to a SaaS provider. They develop the client's targeted lead lists, enhance their current lead lists from intent data, generate leads, and book appointments.

    "They work with us to grasp our ideal customer profile, buyer personas, and the type of leads that will drive revenue."

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  • 8
    • Scheduling

      4.9
    • Quality

      4.8
    • Cost

      4.7
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 1,000 - 9,999 employees
    • Lexington, KY

    Helpware is a call center located in Los Angeles that was founded in 2015. Their team of around 135 employees specializes in voice services, non-voice BPO and back-office services, HR consulting and outsourcing, transcription, and more.

    Clients

    • DoorDash
    • Headspace
    • Jam City
    • Bittrex

    Industries

    Notable Project

    Helpware provides customer support services to a grocery delivery firm. They've deployed over 30 agents to provide support in the client's email, text messages, and social media channels.

    "The leadership team has taken our current processes, learned them quickly, and trained the new teammates."

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  • 9
    • $1,000+
    • 250 - 999 employees
    • Warszawa, Poland

    Simply Contact is an outsourcing contact center based in Dnipro, Ukraine. The contact center, founded in 2015, has more than 400 employees and provides non-voice BPO/back office services and voice services. Simply Contact serves mid-market and other-sized companies in various industries that include hospitality & leisure; supply chain, logistics, and transport; and e-commerce.

    Clients

    • Wizz Air
    • Metro Cash&Carry
    • Bolt
    • Yves Rocher

    Industries

    Notable Project

    Simply Contact provides customer service outsourcing for a data analytics company. They manage customer inquiries and live chat and social media channels, and offer support in English, Ukrainian, and German.

    "We are thoroughly satisfied with their services."

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  • 10
    • $50,000+
    • 250 - 999 employees
    • Fort Lauderdale, FL

    APEX Call Centers is a call center services company headquartered in Fort Lauderdale, FL, Founded in 2017, their team of over 6 strategic locations in US, Mexico and Philippines specializes in Customer Service, Technical Support, Lead Generation, Help Desk and Order Processing.

     

    Industries

    Notable Project

    APEX Call Centers works as the customer service center of a media company. Their team has been in charge of transitioning from the previous provider, developing scripts, handling calls, and making appointments.

    “APEX Call Centers’ biggest strength is their ability to adapt to our needs and scale their workforce when needed.”

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  • 11
    • $10,000+
    • 250 - 999 employees
    • San Pablo City, Philippines

    Call center company Big Outsource is in San Pablo City, Philippines. The midsize firm was founded in 2014. Their services include voice services and non-voice bpo/back office services.

    Industries

    Notable Project

    Big Outsource provides customer and technical support operations services for a telecommunications company. They manage the billing and collection process and help fasten resolution times.

    "Their proactive communication and transparency are particularly appreciated."

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  • 12
    • $1,000+
    • 250 - 999 employees
    • St. Louis, MO

    Abstrakt Marketing Group is a call center service. They are headquartered in St. Louis, Missouri and have a midsize team. Their services include voice services, content marketing, graphic design, social media marketing, and more. The company was established in 2009.

    Notable Project

    Abstrakt Marketing Group provides ongoing call center services for a branding solutions company. The team is responsible for cold-calling potential clients, and the goal is to acquire new leads.

    "We've been impressed by their thorough onboarding."

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  • 13
    • $5,000+
    • 10 - 49 employees
    • London, United Kingdom

    The Lead Gen Dept is a digital agency based in London that specializes in helping B2B companies generate and engage sales-ready leads with your ICP. Founded in 2019, The Lead Gen Dept has a specialized team helping clients to connect and book meetings with pre-approved target accounts. They have significant experience in the enterprise space and take care of all the top-of-funnel activities leading to a prospect requesting a call.

    Clients

    • WhosOn
    • ThinkAutomation
    • ArtuData
    • Grey Monarch

    Industries

    Notable Project

    Lead Gen Dept. provides lead generation services to a UX design agency. They define the client's target audience and set up and manage their outbound email marketing and telemarketing campaigns.

    "They guarantee that they will hit their target across a 3-month period."

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  • 14
    • $1,000+
    • 1,000 - 9,999 employees
    • Wilmington, DE

    SupportYourApp is a customer support outsourcing company based in Kiev, Ukraine. Founded in 2010, SupportYourApp's team of more than 400 employees provides non-voice BPO/back office services and voice services. 

    Clients

    • Mastercard
    • Amazon
    • HERE Technologies
    • MacPaw

    Industries

    Notable Project

    SupportYourApp provides customer support services to a gift and accessories brand. They've deployed three agents who offer phone and email support seven days a week for 14-22 hours daily.

    "What distinguishes them is their active commitment to rectifying problems when they arise."

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  • 15
    • $1,000+
    • 10 - 49 employees
    • Horsham , United Kingdom

    Small direct marketing company Virtual Sales Limited, is in Horsham , United Kingdom. They specialize in direct marketing and market research and were launched in 2001.

    Industries

    Notable Project

    Virtual Sales Limited provides sales outsourcing services for a cloud and data analytics company. The team is responsible for identifying and cold-calling potential customers and scheduling meetings with them.

    "They take the time to fully understand their domain and hone the messaging."

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  • 16
    • $25,000+
    • 250 - 999 employees
    • Simi Valley, CA

    Beyond Codes Inc. is a lead generation and appointment setting company based in Simi Valley, Calif., with an office in Hammersmith, U.K. The company, founded in 2008, has almost 300 employees and provides voice services, event marketing & planning, market research, email marketing, social media marketing, and non-voice BPO/back office services. Beyond Codes Inc. serves enterprise and smaller-sized companies in IT and other industries.

    Clients

    • EXL

    Industries

    Notable Project

    Beyond Codes Inc. provided frontend sales support for a consulting company. The team is in charge of responding to incoming leads and queries and setting appointments with prospective customers.

    "Beyond Codes is full of positive energy and enthusiasm. You can feel it from the very start till the end."

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  • 17
    • Scheduling

      4.6
    • Quality

      4.6
    • Cost

      4.3
    • NPS

      4.6
    Read Full Reviews on Clutch Visit Site
    • Undisclosed
    • 250 - 999 employees
    • Los Angeles, CA

    Callbox is a business process outsourcing company based in Encino, Calif., with offices in Singapore, Ultimo, Australia, and the Philippines. Founded in 2004, Callbox's team of 174 provides voice services and non-voice BPO/back office services.

    Clients

    • Alima Technologies
    • Intrepid Advisors
    • LexisNexis
    • LiQWID

    Industries

    Notable Project

    Callbox spearheaded a global trade and service provider's lead generation efforts to get active leads from Europe and USA. They leveraged the integrated marketing plan to target potential clients.

    "We were impressed by their long-time experience and willingness to bring value to both sides."

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  • 18
    • Scheduling

      4.9
    • Quality

      4.9
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 10 - 49 employees
    • Ottawa, Canada

    Sales Nash is a content marketing company. Their small team is headquartered in Ottawa, Canada. The company focuses on content marketing, email marketing, voice services, and non-voice bpo/back office services.

    Clients

    • CDS Global Cloud
    • Allen Austin
    • Biovision Diagnostics
    • Derm For Primary Care

    Industries

    Notable Project

    SalesNash provided sales outsourcing services for a restaurant software provider. The team built lists of prospective customers, conducted email outreach, and scheduled demos and discovery calls.

    "They were kind and easy to work with."

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  • 19
    • Scheduling

      4.9
    • Quality

      4.9
    • Cost

      4.9
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 50 - 249 employees
    • Dover, DE

    SalesAR is a B2B lead generation company from Kyiv, Ukraine. Since 2019, their team of 25 employees provides email marketing and content marketing mostly to small businesses in the advertising, IT, and business services industries.

    Clients

    • Akridata
    • Accelerist
    • Arineta
    • Vector Software

    Industries

    Notable Project

    SalesAR has crafted a content strategy for an online marketplace. They've also worked alongside the client to draft an Ideal Customer Profile (ICP) and generate leads and appointments via email and LinkedIn.

    "We're satisfied with the outcomes."

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  • 20
    • Scheduling

      4.6
    • Quality

      4.6
    • Cost

      4.5
    • NPS

      4.8
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10,000+ employees
    • Canton, OH

    Fusion BPO Services is a global business process outsourcing firm headquartered in Montreal, Canada, that was established in 2004. Their team of over 1000 employees offers voice BPO, non-voice BPO, and transcription services.

    Clients

    • PAYTM
    • TATA
    • SNAPDEAL
    • RELIANCE JIO

    Industries

    Notable Project

    Fusion BPO Services is providing call center services for a hospitality company. They consider the client’s technical and commercial needs when hiring resources.  

    "Fusion has always exceeded our expectations."

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  • 21
    • Scheduling

      5.0
    • Quality

      4.9
    • Cost

      4.9
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 1,000 - 9,999 employees
    • Philadelphia, PA

    Intelegencia is a non-voice bpo/back office services company. Established in 2009, the team specializes in non-voice bpo/back office services, cloud consulting & SI, and marketing strategy. Their midsize company is Atlanta, Georgia-based.

    Industries

    Notable Project

    Intelegencia has been hired by a publishing company to provide data entry services. The team is tasked with formatting text, scheduling stories, and editing text.

    "They know how to keep people active and keep their staff on a good pace while working remotely."

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  • 22
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 10 - 49 employees
    • Calgary, Canada

    Established in 2022, Alphoric is a sales outsourcing company. They are located in Calgary, Canada and have a small team. The agency offers sales outsourcing.

    Industries

    Notable Project

    Alphoric has provided data scraping services for an advertising and marketing company. They have been hired to scrape a large amount of quality data for the client's email campaigns.

    "What was impressive how good the data and speed were."

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  • 23
    • Scheduling

      4.7
    • Quality

      4.8
    • Cost

      4.8
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 1,000 - 9,999 employees
    • Long Beach, CA

    Located in Washington, District of Columbia and Pasig, Philippines, Boldr is a call center. Launched in 2016, the small team focuses on voice services and non-voice bpo/back office services.

    Industries

    Notable Project

    Boldr. is providing professional employer organization (PEO) services for a baby registry platform. They're in charge of onboarding team members and providing customer support, among other tasks.

    "They meet the specific needs of our company in a way that no other competitor can."

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  • 24
    • Scheduling

      4.8
    • Quality

      4.6
    • Cost

      4.1
    • NPS

      4.7
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 250 - 999 employees
    • Nashville, TN

    JumpCrew is a midsize advertising company. They focus on advertising, digital strategy, marketing strategy, content marketing, and more and were launched in 2016. The company is based in Nashville, Tennessee.

    Clients

    • Alibaba
    • AT&T
    • Bosch
    • Experian

    Industries

    Notable Project

    An academic portal wanted to engage with the K12 environment. JumpCrew provided outsourced sales services and developed a strategy to engage prospects, leveraging collateral materials and setting appointments.

    “They knew their craft, and we always got a call back from them.”

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  • 25
    • $1,000+
    • 1,000 - 9,999 employees
    • Hollywood, FL

    Remote CoWorker is a virtual assistant outsourcing company founded in 2013 and located in Hollywood, Fla. They have a team of about 10 employees who offer non-voice BPO/back office services, along with voice, finance and accounting outsourcing, and HR services. Their client base comprises small business in the real estate, business services, IT, and telecommunications industries.

    Clients

    • Amazon
    • Aavgo
    • TheDreamzTeam
    • Managed IT Solutions

    Industries

    Notable Project


    Remote CoWorker provides administrative assistance services for a home modification company. The team provides an outsourced assistant who supports the client with research, scheduling, and invoicing tasks.


    "They do a wonderful job of getting deliverables done on time and serving my customers."

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  • 26
    • $5,000+
    • 50 - 249 employees
    • Makati, Philippines

    Launched in 2016, Loop Contact Solutions is a call center company. Their midsize team is headquartered in Houston, Texas and Makati, Philippines. Their services include call center services, customer service outsourcing, and sales outsourcing.

    Industries

    Notable Project

    Loop Contact Solutions provides lead follow-up services to a tape and label dispenser manufacturer. They contact the customers on the provided list of leads and book appointments on behalf of the client.

    "Our scope of work was not originally part of their core business, yet they agreed to partner with us on this project."

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  • 27
    • $1,000+
    • 50 - 249 employees
    • Farmington, CT

    Strategic Sales & Marketing (SSM) is a lead generation company based in Farmington, Conn. Founded in 1989, SSM helps companies with lead generation and appointment setting services focused on B2B major accounts.  Typical clients are looking to reach the Owner, Director, VP or C level of contact, have a sales cycle that requires multiple touch-points, and uses a "solution sell process." 

    Clients

    • CT Technology Council
    • FFF Associates
    • Gerber Scientific
    • Karen Spencer Design

    Industries

    Notable Project

    Strategic Sales & Marketing launches sales campaigns for a laboratory service provider with cold calling. Their main audience was set to be physicians and scientists.

    "Their project manager understands sales and marketing incredibly thoroughly and pays attention to every small detail."

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  • 28
    • Scheduling

      4.8
    • Quality

      4.7
    • Cost

      4.4
    • NPS

      4.8
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 50 - 249 employees
    • Dallas, TX

    Operatix is a midsize sales outsourcing company based in Dallas, Texas and Fleet, United Kingdom. Established in 2012, the team focuses on sales outsourcing and call center services.

    Industries

    Notable Project

    A cybersecurity platform hired Operatix to help with their sales pipeline development and deliver qualified leads in EMEA. The team is responsible for acquiring meetings with prospective end customers.

    "They are a very professionally run organization that focuses on process and communication as well as the core results."

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  • 29
    • Scheduling

      4.9
    • Quality

      5.0
    • Cost

      4.9
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 50 - 249 employees
    • Las Vegas, NV

    Leadium is a voice services firm based in Alexandria, Va., with an additional office in Kiev, Ukraine. Founded in 2016, the team of 100 specializes in email marketing, market research and CRM consulting and SI. They work primarily with small business clients, mostly in the IT industry.

    Clients

    • DirecTV
    • Minted
    • Segment
    • Zadara

    Industries

    Notable Project

    Leadium provides ongoing lead generation services for an online marketplace that sells luxury products. The team's main task is to set up appointments with key decision-makers within educational institutions.

    "Their grasp of our unique value proposition truly sets them apart from other providers."

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  • 30
    • Undisclosed
    • 50 - 249 employees
    • Denver, CO

    GenSales - B2B LeadGen is a lead generation and appointment setting company based in Denver. They were founded in 2002 and have a team of around 15 employees. Their services focus on voice services and digital strategy. 

    Clients

    • TUDI Mechancial Systems
    • Umbria Listens

    Industries

    Notable Project

    GenSales - B2B LeadGen was hired to generate qualified sales leads for a listing solutions firm. The team was responsible for market research,  contact calling, and appointment scheduling.

    "What stood out about GenSales - B2B LeadGen was their adeptness in grasping the intricate nuances of our industry."

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