Company lists · Data refreshed November 2026

Top 25 Website compliance testing services based in the United States

RevenueBase identified 116 company matches for website compliance testing services associated with the United States as of November 2026 and tracks 1,105 professional contacts across them, including 326 with verified work emails. New York is the largest hub.

This list covers company matches for website compliance testing 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 November 6, 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 Nov 6, 2026 How this list was built
116Companies
1,105Contacts tracked
326Verified emails
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The 25 largest website compliance testing services based in the United States

Ranked by team size
Top 25 of 116 company matches for website compliance testing services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchNew York, United StatesHQ recorded Nov 6, 202651-200239 contacts →

Exact match

“accessiBe is the market leader in web accessibility, trusted by over websites worldwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchPleasant Grove, UT, United StatesHQ recorded Nov 6, 202651-20093 contacts →

Exact match

“ObservePoint is the enterprise standard for website governance, automatically validating tags, cookies, martech integrations, accessibility, and privacy compliance across your…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchWilmington, DE, United StatesHQ recorded Nov 6, 202651-20059 contacts →

Exact match

“UserWay is the leading digital accessibility platform for companies and organizations of all sizes.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchDurham, NC, United StatesHQ recorded Nov 6, 202611-5042 contacts →

Exact match

“Drummond is a leading and trusted compliance, conformance, and standards certification, testing, and validation services provider.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchChatsworth, CA, United StatesHQ recorded Nov 6, 202611-5035 contacts →

Exact match

“At EcomBack, we are committed to creating inclusive and accessible digital experiences and provide equal access for everyone.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchMiami, FL, United StatesHQ recorded Nov 6, 202611-5030 contacts →

Exact match

“Every inaccessible button, missing label, or broken screen reader flow is a lost customer.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchDurham, NC, United StatesHQ recorded Nov 6, 202611-5030 contacts →

Exact match

“Ablr is a Digital Accessibility and Inclusion company that was founded on the key principle that all digital content, including websites, videos, applications, are accessible for…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchEl Dorado Hills, CA, United StatesHQ recorded Nov 6, 202611-5021 contacts →

Exact match

“Consilium Labs is an independent conformity assessment body delivering objective, standards-based audits and assessments for organizations operating in security, privacy, AI…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchNewark, DE, United StatesHQ recorded Nov 6, 202611-5019 contacts →

Exact match

“AccessibilityChecker.org is the #1 web accessibility platform, and a full-service accessibility partner.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchStillwater, MN, United StatesHQ recorded Nov 6, 202611-5019 contacts →

Exact match

“Who We Are: WeCo is a mission-based company that believes that usability is part of accessibility.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchBurlington, VT, United StatesHQ recorded Nov 6, 202611-5015 contacts →

Exact match

“Accessible Web is an organization of web accessibility experts with its headquarters in Burlington, VT.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchDecatur, GA, United StatesHQ recorded Nov 6, 202611-5012 contacts →

Exact match

“DubBot is web governance software that works as hard as you do!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchNorristown, PA, United StatesHQ recorded Nov 6, 202611-509 contacts →

Exact match

“A TRUE All in One accessibility management platform: includes the ability to easily record manual findings, has an advanced remediation process and tracking that simplifies tasks…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchWest Palm Beach, FL, United StatesHQ recorded Nov 6, 20261-108 contacts →

Exact match

“ADA Site Compliance offers businesses and public entities an effective, low-cost solution for minimizing the risks associated with businesses being involved in litigation due to…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchWynnewood, PA, United StatesHQ recorded Nov 6, 202611-506 contacts →

Exact match

“Make-Sense helps organizations reduce the complexity and costs associated with digital accessibility while ensuring compliance with laws and guidelines.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchCedar Grove, NJ, United StatesHQ recorded Nov 6, 20261-104 contacts →

Exact match

“Digital Accessibility Expertise.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchDes Moines, IA, United StatesHQ recorded Nov 6, 202611-504 contacts →

Exact match

“Criterion was founded in 2001 by accessibility expert Anna Bradley, M.S, Ed.S.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202611-504 contacts →

Exact match

“Inclusive Web | Digital Accessibility Made Simple, Scalable, and Strategic At Inclusive Web, we help organizations future-proof their digital presence by making accessibility…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchRoyal Palm Beach, FL, United StatesHQ recorded Nov 6, 202611-504 contacts →

Exact match

“Tech for All is an authority on helping companies ensure their technology is inclusive and meets accessibility compliance or exceeds it.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchFair Oaks, CA, United StatesHQ recorded Nov 6, 20261-104 contacts →

Exact match

“Website accessibility sounds complicated.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchPasadena, CA, United StatesHQ recorded Nov 6, 202611-503 contacts →

Exact match

“is a complete accessibility testing tool designed for digital professionals and agencies dedicated to making websites accessible.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBeverly Hills, CA, United StatesHQ recorded Nov 6, 20261-103 contacts →

Exact match

“Accessibilities is a human-led ADA compliance consultancy offering inspections of physical spaces and digital properties.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchOrlando, FL, United StatesHQ recorded Nov 6, 20261-103 contacts →

Exact match

“Accessibility And Compliance Made Easy Ensuring access to information is a key component of the American Disability Act, and it is critical for every business and organization to…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchVancouver, WA, United StatesHQ recorded Nov 6, 20261-103 contacts →

Exact match

“Converge Accessibility LLC helps organizations achieve ADA and WCAG compliance by combining legal, policy, and technical expertise.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchEast Brunswick, NJ, United StatesHQ recorded Nov 6, 202611-503 contacts →

Exact match

“Elite Site Optimizer (ESO) is an AI-powered website audit tool that helps webmasters to audit websites for web accessibility (508 and ADA), performance, and SEO compliance.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 116 website compliance testing services based in the United States

See the full list, filter by size, metro and specialty, and access 326 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Website compliance testing services based in the United States at a glance

As of Nov 6, 2026
29.5%Verified-email coverage
9.5Average contacts per company
1-10Median size (employees)
6.0%Largest-city concentration · New York
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
74
11-50
28
51-200
12
201-500
1
501-1,000
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 116 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 “website compliance testing 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 326 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 November 6, 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 “website compliance testing services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many website compliance testing services are there based in the United States?

RevenueBase identified 116 company matches for website compliance testing services associated with the United States as of November 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?

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

Which city has the most website compliance testing services?

New York leads with 7 company records, followed by Seattle (5) and Durham (3).

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 326 professional contacts with verified work emails tracked across these 116 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 November 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 116 website compliance testing services based in the United States. Start with a free account, no credit card.

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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.