Company lists · Data refreshed October 2026

Top 25 Certification services based in the United States

RevenueBase identified 390 company matches for certification services associated with the United States as of October 2026 and tracks 9,555 professional contacts across them, including 3,093 with verified work emails. Houston is the largest hub.

This list covers company matches for certification services associated with the United States, 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 October 23, 2026.

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.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 23, 2026 How this list was built
390Companies
9,555Contacts tracked
3,093Verified emails
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The 25 largest certification services based in the United States

Ranked by team size
Top 25 of 390 company matches for certification services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 23, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchWhite Marsh, MD, United StatesHQ recorded Oct 23, 20261,001-5,0002,215 contacts →

Exact match

“Prometric is a global leader in credentialing and skills development.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
2Exact matchBoxborough, MA, United StatesHQ recorded Oct 23, 2026501-1,000743 contacts →

Exact match

“TÜV Rheinland is a world leader in testing, inspection and certification services for a wide variety of industries.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
3Exact matchEmeryville, CA, United StatesHQ recorded Oct 23, 2026201-500690 contacts →

Exact match

“Scientific Certification Systems, Inc, now doing business as SCS Global Services, is a trusted leader in third-party environmental, sustainability and food quality certification…”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
4Exact matchScottsdale, AZ, United StatesHQ recorded Oct 23, 2026501-1,000666 contacts →

Exact match

“Expired certificates shouldn’t be the reason your business goes down.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
5Exact matchOrlando, FL, United StatesHQ recorded Oct 23, 2026201-500336 contacts →

Exact match

“Certus is a leading professional ed-tech training and certification company that, through its suite of brands and businesses, delivers technical-skills training and compliance…”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
6Exact matchAkron, OH, United StatesHQ recorded Oct 23, 2026501-1,000309 contacts →

Exact match

“Founded in 1925 and headquartered in Akron, Ohio, Smithers is a multinational provider of testing, consulting, information, and certification services.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
7Exact matchWarrendale, PA, United StatesHQ recorded Oct 23, 202651-200194 contacts →

Exact match

“Performance Review Institute® (PRI℠) is headquartered in Pittsburgh, Pennsylvania in the USA, with offices in London, UK to serve Europe and in Beijing, China and Aichi, Japan…”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
8Exact matchWashington, DC, United StatesHQ recorded Oct 23, 202651-200183 contacts →

Exact match

“The ANSI National Accreditation Board plays an important role in ensuring the safety and quality of goods and services and in protecting the environment.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
9Exact matchWashington, DC, United StatesHQ recorded Oct 23, 202611-50147 contacts →

Exact match

“The premier organization independently recognizing excellence in green business industry performance and practice globally.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
10Exact matchFrederick, MD, United StatesHQ recorded Oct 23, 202651-200135 contacts →

Exact match

“A2LA is a nonprofit, non-governmental, public service, membership society.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
11Exact matchWatertown, MA, United StatesHQ recorded Oct 23, 2026501-1,000132 contacts →

Exact match

“RoyalCert is one of the fastest-growing certification bodies, with an international presence in more than 30 countries that is constantly expanding.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
12Exact matchThe Woodlands, TX, United StatesHQ recorded Oct 23, 202651-20099 contacts →

Exact match

“INTERCERT is a multinational auditing company headquartered in Texas, United States operating at 28+ countries.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
13Exact matchHouston, TX, United StatesHQ recorded Oct 23, 202651-20095 contacts →

Exact match

“Founded in 2002, SSL.com is a Digital Trust Platform securing online communications, applications, and digital content through PKI solutions and identity trust services.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
14Exact matchWestborough, MA, United StatesHQ recorded Oct 23, 2026501-1,00079 contacts →

Exact match

“The Global Skill Development Council (GSDC) is a professional certification body offering GSDC accredited certifications that empower individuals, institutions, and enterprises…”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
15Exact matchMilwaukee, WI, United StatesHQ recorded Oct 23, 202611-5077 contacts →

Exact match

“Exemplar Global Inc.(formerly RABQSA) is a not-for-profit organization with shared headquarters in both the United States and Australia.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
16Exact matchMinneapolis, MN, United StatesHQ recorded Oct 23, 202651-20073 contacts →

Exact match

“Plexus International is a global leader in providing training, assessment, and consulting services for organizations to attain quality management systems excellence.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
17Exact matchDayton, OH, United StatesHQ recorded Oct 23, 202611-5070 contacts →

Exact match

“Since 1994, EAGLE has built an excellent reputation by providing third party auditing services that are objective and value-added.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
18Exact matchArvada, CO, United StatesHQ recorded Oct 23, 2026501-1,00066 contacts →

Exact match

“Amtivo delivers accredited certification services to ISO management system standards, training, and sector-specific schemes, helping organizations demonstrate conformity, meet…”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
19Exact matchNew York, United StatesHQ recorded Oct 23, 20261,001-5,00063 contacts →

Exact match

“Alliance Infinite has consistently maintained its position among the world’s very best quality service providers for Third Party Inspection, Testing, Calibration and Management…”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
20Exact matchVirginia Beach, VA, United StatesHQ recorded Oct 23, 202651-20061 contacts →

Exact match

“Paradigm, Inc.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
21Exact matchLewisburg, PA, United StatesHQ recorded Oct 23, 202611-5060 contacts →

Exact match

“Core Business Solutions specializes in the needs of small businesses seeking ISO 9001 certification.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
22Exact matchChicago, IL, United StatesHQ recorded Oct 23, 202651-20053 contacts →

Exact match

“Certification-as-a-Service for an evolving workforce.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
23Exact matchReston, VA, United StatesHQ recorded Oct 23, 202651-20049 contacts →

Exact match

“CertiPath has distilled over a decade of providing services in the secure credential market into a suite of Identity Products that represent the next wave of security for the…”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
24Exact matchSunnyvale, CA, United StatesHQ recorded Oct 23, 202611-5047 contacts →

Exact match

“Since 1996, Bay Area Compliance Laboratories Corp.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase
25Exact matchSpring, TX, United StatesHQ recorded Oct 23, 2026n/a44 contacts →

Exact match

“ABS Quality Evaluations, Inc.(ABS QE) is a global leader in quality assurance and business improvement services with over 30 years of experience.”

Recorded in the RevenueBase company graph · Oct 23, 2026 · View company records in RevenueBase

Showing 25 of 390 certification services based in the United States

See the full list, filter by size, metro and specialty, and access 3,093 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Certification services based in the United States at a glance

As of Oct 23, 2026
32.4%Verified-email coverage
24.5Average contacts per company
11-50Median size (employees)
3.6%Largest-city concentration · Houston
Oct 23, 2026Page data refreshed

Companies by employee count

1-10
180
11-50
135
51-200
47
201-500
12
501-1,000
8
1,001-5,000
4
5,001-10,000
2
10001+
1

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 390 companies.

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.
What qualifies
Company records associated with the United States whose business descriptions match “certification services” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 3,093 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 October 23, 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.

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 “certification services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many certification services are there based in the United States?

RevenueBase identified 390 company matches for certification services associated with the United States as of October 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?

Prometric tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most certification services?

Houston leads with 14 company records, followed by Miami (11) and New York (10).

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 3,093 professional contacts with verified work emails tracked across these 390 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 October 23, 2026.

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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.