Top 100 Third Party Verification Companies

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Top 100 Third Party Verification Companies

The Best of December 2025

Looking for a top third party verification service?

This guide contains companies from all over the globe that excel in third-party verification. Their services vary from non-voice BPO/back-office services to voice services to transcription and they provide a multitude of other services your company may need. 

Jump to Most Reviewed Companies

List of the Best Third Party Verification Agencies

  • 1
    (28 Reviews) 5.0

    Timeliness

    4.9

    Service Excellence

    5.0

    Value

    4.7

    Would Recommend

    5.0
    $1,000+
    1,000 - 9,999 employees
    Chicago, IL
    Established 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.
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    Industries

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  • 2
    (46 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $10,000+
    250 - 999 employees
    San Pablo City, Philippines
    Customer Service Outsourcing company Big Outsource is based in San Pablo City, Philippines; Candelaria, Philippines and Santo Tomas, Philippines. The midsize team specializes in Customer Service Outsourcing, Back Office Outsourcing, Call Center Services, and Finance & Accounting Outsourcing (FAO). The firm was founded in 2014.
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    Industries

  • 3
    (102 Reviews) 4.8

    Timeliness

    4.9

    Service Excellence

    4.7

    Value

    4.6

    Would Recommend

    4.8
    $1,000+
    250 - 999 employees
    Oakville, Canada

    Martal Group is a Sales Outsourcing company launched in 2009. The midsize team focuses on Sales Outsourcing, Email Marketing, and Call Center Services. The agency is in Oakville, Canada; San Francisco, California and Uniondale, New York.

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    Clients

    Bosch

    Industries

  • 4
    (11 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $1,000+
    250 - 999 employees
    Hatboro, PA

    HelpSquad, LLC is a midsize in Quakertown, Pennsylvania and Hatboro, Pennsylvania. They specialize in and were established in 2011.

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    Clients

    Slinger Bag

    Industries

  • 5
    (10 Reviews) 4.8

    Timeliness

    4.6

    Service Excellence

    4.9

    Value

    4.6

    Would Recommend

    4.9
    $1,000+
    1,000 - 9,999 employees
    Santa Monica, CA
    Customer Service Outsourcing company Boldr. Is based in Santa Monica, California; Pasig, Philippines; Mérida, Mexico and Tacloban City, Philippines. The large team provides Customer Service Outsourcing, Call Center Services, Back Office Outsourcing, Employer of Record (EOR) Services, and more and was launched in 2016.
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    Industries

  • 6
    (11 Reviews) 4.9

    Timeliness

    4.9

    Service Excellence

    4.5

    Value

    4.5

    Would Recommend

    4.9
    $50,000+
    10,000+ employees
    Wei Fang Shi, China
    Welsend is a Customer Service Outsourcing company founded in 1993. They are headquartered in Wei Fang Shi, China; Taguig, Philippines; Cheng Du Shi, China and Rizhao, China and have a large team. Their services include Customer Service Outsourcing, Call Center Services, CRM consulting and SI, and Back Office Outsourcing.
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    Industries

  • 7
    (34 Reviews) 4.7

    Timeliness

    4.2

    Service Excellence

    4.1

    Value

    4.0

    Would Recommend

    4.8
    $1,000+
    250 - 999 employees
    Orlando, FL

    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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    Clients

    Culinary Institute of America

    Industries

  • 8
    (52 Reviews) 4.5

    Timeliness

    1.1

    Service Excellence

    1.3

    Value

    1.1

    Would Recommend

    4.5
    Undisclosed
    50 - 249 employees
    Duluth, GA

    Moneypenny USA (formerly VoiceNation) , a call center, is in Duluth, Georgia. The midsize team focuses on Call Center Services, Customer Service Outsourcing, and Sales Outsourcing. The company was established in 2000.

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    Clients

    Adobe

    Industries

  • 9
    (9 Reviews) 4.8

    Timeliness

    4.9

    Service Excellence

    4.8

    Value

    4.8

    Would Recommend

    5.0
    $5,000+
    250 - 999 employees
    Iași, Romania
    Located in Iași, Romania, IntelligentBee is a midsize Customer Service Outsourcing company. Launched in 2010, the team provides Customer Service Outsourcing, Call Center Services, and Back Office Outsourcing.
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    Clients

    Sendgrid.com

    Industries

  • 10
    (5 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    4.8

    Would Recommend

    5.0
    Undisclosed
    1,000 - 9,999 employees
    Noida, India
    Phone answering service Go4customer was established in 2004. Their large team is headquartered in Noida, India; Jaipur, India; Navi Mumbai, India and Bengaluru, India. Their services include Call Center Services, Customer Service Outsourcing, Market Research, and Sales Outsourcing.
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    Clients

    MSME

    Industries

  • 11
    (119 Reviews) 4.6

    Timeliness

    4.6

    Service Excellence

    4.5

    Value

    4.3

    Would Recommend

    4.6
    Undisclosed
    1,000 - 9,999 employees
    Los Angeles, CA

    Callbox is a Sales Outsourcing company. The Los Angeles, California-based firm was founded in 2004. The large team focuses on Sales Outsourcing, Customer Service Outsourcing, Call Center Services, and Back Office Outsourcing.

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    Clients

    Alima Technologies

    Industries

  • 12
    (9 Reviews) 4.8

    Timeliness

    4.9

    Service Excellence

    4.8

    Value

    4.6

    Would Recommend

    5.0
    $5,000+
    1,000 - 9,999 employees
    Cebu City, Philippines
    Founded in 2008, Select VoiceCom is a phone answering service. Their large team is based in Cebu City, Philippines; Davao City, Philippines and Savannah, Georgia. Their team specializes in Call Center Services, Customer Service Outsourcing, Sales Outsourcing, Finance & Accounting Outsourcing (FAO), and more.
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    Industries

  • 13
    (29 Reviews) 4.8

    Timeliness

    4.8

    Service Excellence

    4.7

    Value

    4.8

    Would Recommend

    4.9
    $1,000+
    50 - 249 employees
    Afton, WY

    Wow24-7 is an omnichannel customer outsourcing company based in Kyiv, Ukraine. Founded in 2016, Wow24-7 provides non-voice BPO/back office services and voice services.

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    Clients

    The App Solutions

    Industries

  • 14
    (58 Reviews) 4.9

    Timeliness

    4.9

    Service Excellence

    4.9

    Value

    4.9

    Would Recommend

    5.0
    $1,000+
    10 - 49 employees
    Toronto, Canada

    Veta Virtual Receptionist is a phone answering service. They are headquartered in Toronto, Canada and have a small team that provides voice services. The company was founded in 2020.

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    Industries

  • 15
    (6 Reviews) 4.2

    Timeliness

    4.3

    Service Excellence

    4.3

    Value

    4.3

    Would Recommend

    4.4
    $1,000+
    1,000 - 9,999 employees
    Gurugram, India

    MattsenKumar is a back office services provider based in Woodburn, Ore., with an office in Gurgaon, India. Founded in 2010, MattsenKumar's team of 364 employees offers voice/call center services and non-voice BPO/back office services.

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    Industries

  • 16
    (13 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    4.9

    Value

    5.0

    Would Recommend

    5.0
    Undisclosed
    50 - 249 employees
    Toronto, Canada

    24H Virtual is a voice and customer service agency based in Toronto with over 10 employees. They specialize in voice services for small and mid-market companies in the fields of transportation, education, and financial services.

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    Industries

  • 17
    (16 Reviews) 4.9

    Timeliness

    4.9

    Service Excellence

    4.9

    Value

    4.8

    Would Recommend

    5.0
    $5,000+
    250 - 999 employees
    Home, KS

    Blue Valley Marketing, a Customer Service Outsourcing company, is in Home, Kansas. The agency provides Customer Service Outsourcing, Call Center Services, and Sales Outsourcing and has a midsize team.The agency was established in 1991.

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    Industries

  • 18
    (12 Reviews) 4.8

    Timeliness

    4.8

    Service Excellence

    4.9

    Value

    4.6

    Would Recommend

    4.9
    $1,000+
    50 - 249 employees
    Scottsdale, AZ

    Intelemark is an appointment setting and B2B lead generation company based in Scottsdale, Ariz. The company, founded in 1999, has more than 25 employees who provide voice and other marketing services to various companies.

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    Clients

    Dow Jones

    Industries

  • 19
    (123 Reviews) 4.8

    Timeliness

    4.9

    Service Excellence

    4.9

    Value

    4.8

    Would Recommend

    4.8
    $1,000+
    50 - 249 employees
    London, England
    SalesAR is a midsize Sales Outsourcing company. Headquartered in Dover, Delaware; London, England and Kyiv, Ukraine, the firm was launched in 2019. Their services include Sales Outsourcing, Call Center Services, Content Marketing, and Email Marketing.
    Read More

    Clients

    Akridata

    Industries

  • 20
    (23 Reviews) 4.7

    Timeliness

    4.8

    Service Excellence

    4.7

    Value

    4.6

    Would Recommend

    4.7
    $1,000+
    1,000 - 9,999 employees
    Bengaluru, India

    Flatworld Solutions is an outsourcing company headquartered in Princeton, N.J. Founded in 2006, they have a team of over 750 employees. The firm's international offices are based across India, the U.K, and the Philippines and has experience in nonvoice/ back office, transcription, and call center services. Their Clients mostly work in manufacturing, education, and healthcare industries. 

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    Clients

    MSN

    Industries

  • 21
    (15 Reviews) 4.8

    Timeliness

    4.9

    Service Excellence

    4.7

    Value

    4.2

    Would Recommend

    4.8
    $10,000+
    250 - 999 employees
    Overland Park, KS

    1840 & Company is a call center service launched in 2014. The midsize team focuses on call center services, sales outsourcing, customer service outsourcing, back office outsourcing, and more. The company is in Overland Park, Kansas and Makati, Philippines.

    Read More

    Clients

    Groupon

    Industries

  • 22
    (8 Reviews) 4.9

    Timeliness

    5.0

    Service Excellence

    4.9

    Value

    5.0

    Would Recommend

    5.0
    $1,000+
    250 - 999 employees

    Founded in 2017, LTVplus is BPO firm that is headquartered in West Palm Beach, Fla. Their team of 19 is sold dedicated to providing non-voice BPO and back office services. 

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    Clients

    Bully Max

    Industries

  • 23
    (22 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    Undisclosed
    250 - 999 employees
    Torreón, Mexico

    Remote Team Solutions is an IT staff augmentation company launched in 2014. The midsize Reno, Nevada-based team provides IT staff augmentation, Call Center Services, Back Office Outsourcing, Customer Service Outsourcing, and more.

    Read More

    Clients

    Now Prop Preservation LLC

    Industries

  • 24
    (30 Reviews) 4.7

    Timeliness

    4.8

    Service Excellence

    4.7

    Value

    4.7

    Would Recommend

    4.8
    $1,000+
    50 - 249 employees
    Berkeley, CA

    Wing Assistant, a back office outsourcing company, was established in 2018. Their midsize team is located in Berkeley, California. Their services include back office outsourcing, customer service outsourcing, sales outsourcing, call center services, and more.

    Read More

    Industries

  • 25
    (17 Reviews) 4.5

    Timeliness

    4.4

    Service Excellence

    4.6

    Value

    4.4

    Would Recommend

    4.5
    $5,000+
    1,000 - 9,999 employees
    Mahwah, NJ

    DialAmerica is a business process outsourcing firm headquartered in Mahwah, N.J. with offices in New York City, Athens, Ga., Charleston, and Cleveland. Founded in 1957, they have over 5000 employees. Their services include voice call process outsourcing, but they offer non-voice services as well. 

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    Clients

    TIME Magazine

    Industries

  • 26
    (6 Reviews) 4.9

    Timeliness

    5.0

    Service Excellence

    4.9

    Value

    5.0

    Would Recommend

    4.9
    $1,000+
    10 - 49 employees
    Lahore, Pakistan

    HiredSupport is a non-voice bpo/back office services company founded in 2015. Their midsize team is in Rancho Cucamonga, California and Lahore, Pakistan. Their services include non-voice bpo/back office services, voice services, and transcription.

    Read More

    Clients

    HealthyStuff.com

    Industries

  • 27
    (3 Reviews) 4.8

    Timeliness

    4.7

    Service Excellence

    5.0

    Value

    3.8

    Would Recommend

    4.8
    $1,000+
    250 - 999 employees
    Kyiv, Ukraine

    Answering service Global Bilgi was established in 2008. Their midsize team is in Kyiv, Ukraine and Dnipro, Ukraine. Their services include voice services, non-voice bpo/back office services, CRM consulting and SI, HR services, and more.

    Read More

    Industries

  • 28
    (7 Reviews) 4.7

    Timeliness

    4.6

    Service Excellence

    4.4

    Value

    4.4

    Would Recommend

    4.6
    $1,000+
    250 - 999 employees
    Chennai, India
    4D Global, an answering service, is based in Chennai, India and Scottsdale, Arizona. Launched in 2015, the midsize team specializes in Call Center Services, Back Office Outsourcing, and Sales Outsourcing.
    Read More

    Industries

  • 29
    (2 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $1,000+
    50 - 249 employees
    Call Masters BPO is a call center company. Launched in 2021, the team focuses on call center services. Their midsize firm is Sheridan, Wyoming-based.
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    Industries

  • 30
    (1 Reviews) 5.0

    Timeliness

    4.5

    Service Excellence

    5.0

    Value

    4.0

    Would Recommend

    5.0
    $1,000+
    1,000 - 9,999 employees
    Kantipur Management Private Limited, a marketing strategy company, was launched in 2014. Their large team is headquartered in Kathmandu, Nepal; Lalitpur, Nepal and Lalitpur, Nepal and specializes in marketing strategy, corporate training, customer service outsourcing, and hr consulting.
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    Industries

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