Top 100 Third Party Verification Companies
The Best of December 2025Looking 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. With all of these options, we know that it can be difficult to navigate the best company for you.
That's why we've created this list of the best third party verification companies for you to review. Read through company descriptions, former clients, and notable projects to find the best fit for your business.
List of the Best Third Party Verification Agencies
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61$5,000+1,000 - 9,999 employeesKyiv, UkraineEverHelp is a Customer Service Outsourcing company. Founded in 2021, the large firm is based in Warszawa, Poland and Kyiv, Ukraine. Their services include Customer Service Outsourcing, Call Center Services, Back Office Outsourcing, and Sales Outsourcing.Read More
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62$1,000+50 - 249 employeesOmaha, NERead More
Complete Call Solutions is a voice services outsourcing firm in Omaha, Nebraska. Founded in 2008, they have about 74 employees that serve clients in the retail, hospitality, and financial services sectors.
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63$1,000+250 - 999 employeesBelize City, BelizeProtel BPO is a phone answering service. They are in Belize City, Belize and Los Angeles, California and have a midsize team. The firm offers Call Center Services, Customer Service Outsourcing, and Back Office Outsourcing.Read More
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64Undisclosed250 - 999 employeesBeograd, SerbiaSilver Bell Group is a social media marketing agency based in Beograd, Serbia. The midsize company was launched in 2014. Their services include social media marketing, blockchain, customer service outsourcing, commercial property management, and more.Read More
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65Undisclosed50 - 249 employeesSpring, TXRead More
Westpark Communications is a business process outsourcing firm based in Houston, Texas. Established in 1968, the team of about 40 employees primarily provides voice services and non-voice BPO and back office services for the manufacturing, retail, and business services industries.
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Aries Worldwide LogisticsIndustries
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66Undisclosed10 - 49 employeesKarachi, PakistanMunzai Solutions, a Sales Outsourcing company, was launched in 2022. The agency provides Sales Outsourcing, Call Center Services, CRM consulting and SI, and Customer Service Outsourcing and has a small team.Read More
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67$5,000+50 - 249 employeesKingston, JamaicaVLBPO LLC, a phone answering service, was established in 2015. The company focuses on call center services, recruiting, hr outsourcing, and hr consulting and has a midsize team.Read More
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eCommerce, Law Firms, Fintech, Saas, HealthIndustries
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68$1,000+50 - 249 employeesFort Lauderdale, FLHeadquartered in Fort Lauderdale, Florida, Evateck is a midsize customer service outsourcing company. They offer customer service outsourcing, call center services, IT managed services, IT staff augmentation, and more and were launched in 2024.Read More
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69Undisclosed250 - 999 employeesGdańsk, PolandAplitt sp. Z o.o. Is a Gdańsk, Poland-based software development company. The midsize team provides custom software development, web development, mobile app development, application testing, and more. The company was founded in 1995.Read More
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70$1,000+10 - 49 employeesBaltimore, MDRead More
RemSource is a consulting and virtual support company located in Baltimore. RemSource was founded in 2009 and maintains a team of 7 that provides non-voice BPO/back office services, bookkeeping, voice services, and business consulting services for small businesses.
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71$10,000+250 - 999 employeesNorth Charleston, SCLaunched in 1998, Sales Focus Inc. Is a Sales Outsourcing company. Their midsize team is in North Charleston, South Carolina. Their services include Sales Outsourcing, Call Center Services, Account-Based Marketing, and Recruiting.Read More
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72Undisclosed10 - 49 employeesPhoenix, AZVeza Reception is a Phoenix, Arizona-based phone answering service. The small firm was established in 2023. Their services include Call Center Services and Customer Service Outsourcing.Read More
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73Undisclosed1,000 - 9,999 employeesBirkenhead , EnglandRead More
The Contact Company is an outsourcing firm based in Birkenhead, U.K. Founded in 2006, it has more than 250 employees who specialize in non-voice BPO/back office services and voice services. The team primarily partners with enterprise and midmarket clients in the business services, financial services, retail, telecommunications, and e-commerce sectors.
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PlusnetIndustries
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74$1,000+250 - 999 employeesBaliuag, PhilippinesRead More
Call center service Telework PH is headquartered in Baliuag, Philippines. The midsize team provides Call Center Services, Back Office Outsourcing, Customer Service Outsourcing, and Data Annotation Services and was launched in 2013.
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75$5,000+250 - 999 employeesEstablished in 2021, Clevertone is a call center company and Back Office Outsourcing company. They are in Beaumont, California; Fort Lauderdale, Florida; Miami, Florida and Los Angeles, California and have a midsize team. Their services include Call Center Services and Back Office Outsourcing.Read More
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76$50,000+1,000 - 9,999 employeesSan Diego, CARedial BPO Call Center is an answering service established in 2017. The agency offers Call Center Services and Customer Service Outsourcing.Read More
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Soaren Management Home RunIndustries
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77Undisclosed50 - 249 employeesCharleston, SCRead More
Call Experts is a contact center outsourcing firm headquartered in Charleston, South Carolina. Founded in 1982, they now have over 200 employees distributed between three call centers on the US east coast. Call Experts provides expert services for voice support, including virtual receptionist services, inbound appointments, and customer support.
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Charleston Water SystemIndustries
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78Undisclosed50 - 249 employeesDhaka, BangladeshLaunched in 2018, Call Point Business Solutions Ltd. Is an answering service. Their midsize team is based in Dhaka, Bangladesh and offers Call Center Services, Back Office Outsourcing, Customer Service Outsourcing, Sales Outsourcing, and more.Read More
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Commercial Cleaning Leads GenerationIndustries
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79$10,000+1,000 - 9,999 employeesWrocław, PolandCCIG Group, a phone answering service, is in Wrocław, Poland; Warszawa, Poland; Zielona Góra, Poland and Tarnów, Poland. The large team offers Call Center Services, Customer Service Outsourcing, and Back Office Outsourcing. The company was established in 2002.Read More
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80$1,000+10 - 49 employeesLaunched in 2016, Sunlightsol Technologies is a call center. Their small team is headquartered in Delhi, India and Delhi, India. Their services include Call Center Services, Web Development, Mobile App Development, Social Media Marketing, and more.Read More
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81$1,000+50 - 249 employeesBarranquilla, ColombiaRead More
Empire Global Solution is a midsize telephone answering service. In PARLIN, New Jersey and Barranquilla, Colombia, the agency was founded in 2021. Their services include call center services, back office outsourcing, sales outsourcing, customer service outsourcing, and more.
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82$1,000+250 - 999 employeesLagos, NigeriaRead More
DelonApps is an IT staff augmentation company. The small Lagos, Nigeria-based company was founded in 2018. Their services include IT staff augmentation, voice services, HR services, non-voice bpo/back office services, and more.
Clients
First Bank Access Bank Wema Bank Sterling BankIndustries
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83$10,000+250 - 999 employeesLaunched in 2024, Marke.tel is a midsize Back Office Outsourcing company located in Manila, Philippines. Their services include Back Office Outsourcing, Customer Service Outsourcing, and Call Center Services.Read More
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84$1,000+250 - 999 employeesNoida, IndiaRead More
A1 Call Center is a CISCO-based outsourcing call center in Noida, India. Founded in 2009, the company has a team of 6 that specialize in back office and call center services. They primarily work with clients in the consumer products, media, and education industries.
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BetterUIndustries
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85$50,000+1,000 - 9,999 employeesDubai, United Arab EmiratesRead More
IBT, a midsize phone answering service, is based in Dubai, United Arab Emirates; Abu Dhabi, United Arab Emirates; الدوحة, Qatar and Ahmedabad, India. They offer voice services, IT managed services, IT staff augmentation, HR services, and more and were launched in 2009.
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86$1,000+10 - 49 employeesRead More
VoiceStamps is a professional IVR hosting and design service provider based in Richardson, Texas. Founded in 1999, their now 2 person team specializes in voice services and transcription. VoiceStamps works with a variety of industries including business & financial services and healthcare.
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87$1,000+50 - 249 employees6th Of October, EgyptRead More
Fusion Global Services (FGS) is a BPO company based in Giza, Egypt. The company, founded in 2016, has a core team of more than 20 that provides voice services, HR services, business consulting, non-voice BPO/back office services, and transcription services. FGS serves mid-market and other-sized companies in various industries that include business services, consumer products & services, and gaming.
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BostaIndustries
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88$1,000+250 - 999 employeesSouth Jordan, UTRead More
AdvancedMD is a business process outsourcing firm for the healthcare industry. Based in South Jordan, Utah, they have a branch office in Springfield, Mass. The team was founded in 1999 and includes 590 employees. AdvancedMD offers a wide variety of solutions for independent practices. Their services include non-voice BPO, voice call outsourcing, and integration of medical and enterprise software.
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LineagenIndustries
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89$25,000+50 - 249 employeesLehi, UTPhone answering service Boomsourcing was established in 2002. The midsize Lehi, Utah-based team focuses on Call Center Services, Customer Service Outsourcing, Sales Outsourcing, Data Annotation Services, and more.Read More
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90Undisclosed1,000 - 9,999 employeesKarachi, PakistanFounded in 2008, Sybrid Private Limited is a large IT managed services company in Karachi, Pakistan; Mineola, New York; Millers Point, Australia and Montréal, Canada. Their services include IT managed services, Call Center Services, Branding, Social Media Marketing, and more.Read More
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