Company lists · Data refreshed September 2026

Top 25 Quality management system companies based in the United States

Name: Quality management system companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 492 companies tracked

RevenueBase identified 492 quality management system companies headquartered in the United States as of September 2026 and tracks 5,425 professional contacts across them, including 1,281 with verified work emails. Houston is the largest hub.

This list covers quality management system companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

492Companies

5,425Contacts tracked

1,281Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest quality management system companies based in the United States

Ranked by team size

Top 25 of 492 quality management system companies based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to quality management system companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	TÜV Rheinland North America	Indirect evidence	Boxborough, MA, United StatesHQ checked Sep 21, 2026	501-1,000	712 contacts →
	Indirect evidence “TÜV Rheinland is a world leader in testing, inspection and certification services for a wide variety of industries.” Source: RevenueBase Database · checked Sep 21, 2026
2	Green Tokai Co. LTD	Indirect evidence	Brookville, OH, United StatesHQ checked Sep 21, 2026	501-1,000	246 contacts →
	Indirect evidence “At Green Tokai Co, Ltd, we are dedicated to consistently meeting and exceeding our customers’ expectations in product performance, service, and delivery.” Source: RevenueBase Database · checked Sep 21, 2026
3	Omnex INC	Indirect evidence	Ann Arbor, MI, United StatesHQ checked Sep 21, 2026	501-1,000	216 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
4	PRO QC International	Partial evidence	Mchenry, IL, United StatesHQ checked Sep 21, 2026	501-1,000	211 contacts →
	Partial evidence “Pro QC International provides tailored quality solutions with a human touch in 100 countries.” Source: RevenueBase Database · checked Sep 21, 2026
5	PRI Performance Review Institute	Indirect evidence	Warrendale, PA, United StatesHQ checked Sep 21, 2026	51-200	200 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
6	ANAB	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	199 contacts →
	Partial evidence “The ANSI National Accreditation Board plays an important role in ensuring the safety and quality of goods and services and in protecting the environment.” Source: RevenueBase Database · checked Sep 21, 2026
7	Royalcert International Registrars	Indirect evidence	Watertown, MA, United StatesHQ checked Sep 21, 2026	501-1,000	120 contacts →
	Indirect evidence “RoyalCert is one of the fastest-growing certification bodies, with an international presence in more than 30 countries that is constantly expanding.” Source: RevenueBase Database · checked Sep 21, 2026
8	Iqs, Inc. A Cority Company	Strong evidence	North Olmsted, OH, United StatesHQ checked Sep 21, 2026	201-500	100 contacts →
	Strong evidence “Building on 30+ years of experience, IQS is modern, enterprise-grade quality management software designed to help our customers ensure compliance and bring the highest quality…” Source: RevenueBase Database · checked Sep 21, 2026
9	BLU Perspective	Indirect evidence	Kalamzoo, MI, United StatesHQ checked Sep 21, 2026	201-500	86 contacts →
	Indirect evidence “Performance Driven Foundation.” Source: RevenueBase Database · checked Sep 21, 2026
10	Eagle Certification Group	Indirect evidence	Dayton, OH, United StatesHQ checked Sep 21, 2026	11-50	80 contacts →
	Indirect evidence “Since 1994, EAGLE has built an excellent reputation by providing third party auditing services that are objective and value-added.” Source: RevenueBase Database · checked Sep 21, 2026
11	Exemplar Global, INC	Indirect evidence	Milwaukee, WI, United StatesHQ checked Sep 21, 2026	11-50	80 contacts →
	Indirect evidence “Exemplar Global Inc.(formerly RABQSA) is a not-for-profit organization with shared headquarters in both the United States and Australia.” Source: RevenueBase Database · checked Sep 21, 2026
12	Qualityze INC	Strong evidence	Tampa, FL, United StatesHQ checked Sep 21, 2026	51-200	75 contacts →
	Strong evidence “Qualityze is a leading provider of AI-powered, cloud-based Quality Management System (QMS) software for Life Sciences and Manufacturing organizations.” Source: RevenueBase Database · checked Sep 21, 2026
13	Plexus International	Strong evidence	Minneapolis, MN, United StatesHQ checked Sep 21, 2026	51-200	71 contacts →
	Strong evidence “Plexus International is a global leader in providing training, assessment, and consulting services for organizations to attain quality management systems excellence.” Source: RevenueBase Database · checked Sep 21, 2026
14	IQC	Indirect evidence	Dayton, United StatesHQ checked Sep 21, 2026	11-50	61 contacts →
	Indirect evidence “IQC, The ISO Standard Professionals.” Source: RevenueBase Database · checked Sep 21, 2026
15	Core Business Solutions	Indirect evidence	Lewisburg, PA, United StatesHQ checked Sep 21, 2026	11-50	57 contacts →
	Indirect evidence “Core Business Solutions specializes in the needs of small businesses seeking ISO 9001 certification.” Source: RevenueBase Database · checked Sep 21, 2026
16	Alliance Infinite	Strong evidence	New York, United StatesHQ checked Sep 21, 2026	1,001-5,000	48 contacts →
	Strong evidence “Alliance Infinite has consistently maintained its position among the world’s very best quality service providers for Third Party Inspection, Testing, Calibration and Management…” Source: RevenueBase Database · checked Sep 21, 2026
17	Assurx	Strong evidence	Reno, NV, United StatesHQ checked Sep 21, 2026	51-200	46 contacts →
	Strong evidence “With decades of expertise built into our quality management software and regulatory compliance software platforms, AssurX helps companies maintain quality and compliance…” Source: RevenueBase Database · checked Sep 21, 2026
18	Axeon Corporation	Indirect evidence	Draper, UT, United StatesHQ checked Sep 21, 2026	11-50	46 contacts →
	Indirect evidence “The Axeon Difference Axeon Corporation is a customer-focused, practical and approachable, technically sound training and consulting firm.” Source: RevenueBase Database · checked Sep 21, 2026
19	BAY Area Compliance Laboratories, Corp	Indirect evidence	Sunnyvale, CA, United StatesHQ checked Sep 21, 2026	11-50	45 contacts →
	Indirect evidence “Since 1996, Bay Area Compliance Laboratories Corp.” Source: RevenueBase Database · checked Sep 21, 2026
20	International Auditing And Assurance Standards Board Iaasb	Partial evidence	New York, NY, United StatesHQ checked Sep 21, 2026	11-50	44 contacts →
	Partial evidence “The International Auditing and Assurance Standards Board (IAASB) is an independent standard-setting body that serves the public interest by setting high-quality international…” Source: RevenueBase Database · checked Sep 21, 2026
21	Quality Auditing LLC	Strong evidence	Minneapolis, MN, United StatesHQ checked Sep 21, 2026	11-50	43 contacts →
	Strong evidence “Quality Auditing LLC is the industry leader in Quality Management System Auditing & Consulting for clients in highly-regulated industries, including Medical Device…” Source: RevenueBase Database · checked Sep 21, 2026
22	High QA	Partial evidence	Hazlet, NJ, United StatesHQ checked Sep 21, 2026	11-50	41 contacts →
	Partial evidence “Is your manufacturing quality process up to standard?” Source: RevenueBase Database · checked Sep 21, 2026
23	ABS Quality Evaluations	Partial evidence	Spring, TX, United StatesHQ checked Sep 21, 2026	n/a	41 contacts →
	Partial evidence “ABS Quality Evaluations, Inc.(ABS QE) is a global leader in quality assurance and business improvement services with over 30 years of experience.” Source: RevenueBase Database · checked Sep 21, 2026
24	Drummond Group, LLC	Indirect evidence	Durham, NC, United StatesHQ checked Sep 21, 2026	11-50	40 contacts →
	Indirect evidence “Drummond is a leading and trusted compliance, conformance, and standards certification, testing, and validation services provider.” Source: RevenueBase Database · checked Sep 21, 2026
25	Supplier Inspection Services, INC	Strong evidence	Moraine, OH, United StatesHQ checked Sep 21, 2026	51-200	34 contacts →
	Strong evidence “Supplier Inspection Services, Inc.(SIS, Inc.) is a quality management support services provider that partners with companies worldwide within the Automotive, Aerospace, Appliance…” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: quality management system companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names quality management system companies.
Partial evidence: Its own public description names part of quality management system companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name quality management system companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 492 quality management system companies based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,281 reachable decision-makers.

Free signup · no credit card

View the full list →

Quality management system companies based in the United States at a glance

As of Sep 21, 2026

23.6%Verified-email coverage

11.0Average contacts per company

1-10Median size (employees)

3.9%Largest-city concentration · Houston

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

330

11-50

114

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 492 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among quality management system companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “quality management system companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names quality management system companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among quality management system companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 1,281 across the full list. 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 September 21, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names quality management system companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many quality management system companies are there based in the United States?

RevenueBase identified 492 quality management system companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

TÜV Rheinland North America, headquartered in Boxborough, tops this list with the largest team on record.

Which city has the most quality management system companies?

Houston leads with 19 headquartered companies, followed by Miami (10) and Minneapolis (10).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,281 verified decision-maker contacts tracked across these 492 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.

Ready to reach these companies? Verified emails and direct dials for all 492 quality management system companies based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Quality management system companies by geography

Browse the directory

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 Smart Search, 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.