Company lists · Data refreshed September 2026

Top 25 User experience audit services based in the United States

RevenueBase identified 297 user experience audit services headquartered in the United States as of September 2026 and tracks 2,188 professional contacts across them, including 773 with verified work emails. New York is the largest hub.

This list covers user experience audit services 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 29, 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 29, 2026 86% judged on-target in blind review
297Companies
2,188Contacts tracked
773Verified emails
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The 25 largest user experience audit services based in the United States

Ranked by team size
Top 25 of 297 user experience audit services based in the United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to user experience audit services: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceSanta Clara, CA, United StatesHQ checked Sep 29, 2026501-1,000273 contacts →

Indirect evidence

“Saggezza is now part of Apexon.”

Source: RevenueBase Database · checked Sep 29, 2026
2Partial evidenceBoston, United StatesHQ checked Sep 29, 202651-200183 contacts →

Partial evidence

“Experience Assurance in a complex, interconnected and fast-growing digital space.”

Source: RevenueBase Database · checked Sep 29, 2026
3Strong evidenceSilicon Valley, CA, United StatesHQ checked Sep 29, 2026n/a170 contacts →

Strong evidence

“Evidence-Based User Experience (UX) Research, Training, and Consulting: Nielsen Norman Group is headquartered in Silicon Valley, with members in 17 additional locations throughout…”

Source: RevenueBase Database · checked Sep 29, 2026
4Strong evidenceMiami, FL, United StatesHQ checked Sep 29, 202651-200128 contacts →

Strong evidence

“Established in San Francisco in 2009, with offices in Miami, Florida and Madrid, Spain, Userlytics is a state of the art global platform for remote user experience (UX) and…”

Source: RevenueBase Database · checked Sep 29, 2026
5Indirect evidenceNew York, NY, United StatesHQ checked Sep 29, 202651-200105 contacts →

Indirect evidence

“UsableNet is a leader in digital accessibility.”

Source: RevenueBase Database · checked Sep 29, 2026
6Partial evidenceDowners Grove, IL, United StatesHQ checked Sep 29, 202651-20094 contacts →

Partial evidence

“Bold Insight: Empowering exceptional experiences We're creative, flexible, and research-minded.”

Source: RevenueBase Database · checked Sep 29, 2026
7Indirect evidenceClearwater, FL, United StatesHQ checked Sep 29, 202651-20090 contacts →

Indirect evidence

“TPG Interactive (TPGi) is a world-class accessibility consultancy with a reputation for excellence.”

Source: RevenueBase Database · checked Sep 29, 2026
8Indirect evidenceCary, NC, United StatesHQ checked Sep 29, 202651-20072 contacts →

Indirect evidence

“Bring your product's goodness to life; with UX team that works and converts.”

Source: RevenueBase Database · checked Sep 29, 2026
9Partial evidencePhiladelphia, PA, United StatesHQ checked Sep 29, 202611-5047 contacts →

Partial evidence

“We are a research and user-interface-design company with one mission-fitting products to people.”

Source: RevenueBase Database · checked Sep 29, 2026
10Strong evidenceMiami, FL, United StatesHQ checked Sep 29, 202651-20042 contacts →

Strong evidence

“Key Lime Interactive is a Customer Experience and User Experience research, strategy, and full-service agency focused on helping companies take a human-first approach to building…”

Source: RevenueBase Database · checked Sep 29, 2026
11Indirect evidenceDenver, CO, United StatesHQ checked Sep 29, 202611-5038 contacts →

Indirect evidence

“MeasuringU is a UX research and software firm focused on connecting companies with their customers.”

Source: RevenueBase Database · checked Sep 29, 2026
12Partial evidenceOlympia, WA, United StatesHQ checked Sep 29, 202611-5037 contacts →

Partial evidence

“Anthro-Tech is a human-centered design and research consultancy with over 25 years of experience helping organizations create customer experiences that support their mission and…”

Source: RevenueBase Database · checked Sep 29, 2026
13Indirect evidenceChicago, IL, United StatesHQ checked Sep 29, 202611-5032 contacts →

Indirect evidence

“Sandstorm® is an accessibility-certified, award-winning digital agency that leverages UX principles and AI to uncover actionable insights and reduce bias.”

Source: RevenueBase Database · checked Sep 29, 2026
14Strong evidenceSacramento, CA, United StatesHQ checked Sep 29, 202611-5032 contacts →

Strong evidence

“SymSoft is a digital agency specializing in user experience (UX) design, accessibility compliance, data-driven personalization, business intelligence and enterprise applications.”

Source: RevenueBase Database · checked Sep 29, 2026
15Strong evidenceLas Colinas, TX, United StatesHQ checked Sep 29, 202611-5028 contacts →

Strong evidence

“Usability Sciences, a user experience research firm located in Dallas, TX, has been helping clients improve their customers’ experience for over 35 years by answering the who…”

Source: RevenueBase Database · checked Sep 29, 2026
16Partial evidenceNorth Sioux City, SD, United StatesHQ checked Sep 29, 202611-5023 contacts →

Partial evidence

“We help businesses and organizations improve customer experience.”

Source: RevenueBase Database · checked Sep 29, 2026
17Strong evidenceVancouver, WA, United StatesHQ checked Sep 29, 202611-5021 contacts →

Strong evidence

“We are the leader in user experience monitoring, analysis, and quality assurance testing.”

Source: RevenueBase Database · checked Sep 29, 2026
18Indirect evidenceStillwater, MN, United StatesHQ checked Sep 29, 202611-5018 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 29, 2026
19Indirect evidenceCoralville, United StatesHQ checked Sep 29, 202611-5018 contacts →

Indirect evidence

“Letter B is not just your ordinary information technology company.”

Source: RevenueBase Database · checked Sep 29, 2026
20Indirect evidenceAustin, TX, United StatesHQ checked Sep 29, 202611-5017 contacts →

Indirect evidence

“At Sentier, we believe that clarity drives innovation.”

Source: RevenueBase Database · checked Sep 29, 2026
21Strong evidenceReston, VA, United StatesHQ checked Sep 29, 202611-5014 contacts →

Strong evidence

“Smart Design - Engaging, persuasive customer experiences for IoT, Mobile & Web Informed XP offers User Experience Design, UX Research and Development.”

Source: RevenueBase Database · checked Sep 29, 2026
22Strong evidenceWest Chester, OH, United StatesHQ checked Sep 29, 202611-5013 contacts →

Strong evidence

“A USER EXPERIENCE AGENCY We plan for, design, build, optimize and market experiences that enable and motivate user engagement, conversion, and retention.”

Source: RevenueBase Database · checked Sep 29, 2026
23Strong evidenceBaltimore, MD, United StatesHQ checked Sep 29, 20261-1013 contacts →

Strong evidence

“At Astriata, we combine human insights from usability testing with intentional design and the right technology to create better, more meaningful user experiences.”

Source: RevenueBase Database · checked Sep 29, 2026
24Partial evidenceSan Diego, United StatesHQ checked Sep 29, 20261-1013 contacts →

Partial evidence

“CXperts is a Customer Experience (CX) consultancy solely focused on improving the experience between customers and brands across their many digital interactions.”

Source: RevenueBase Database · checked Sep 29, 2026
25Strong evidenceChicago, IL, United StatesHQ checked Sep 29, 202611-5013 contacts →

Strong evidence

“ELEVATE YOUR BUSINESS SOFTWARE UX Transform your enterprise and B2B applications into seamless experiences that meet user expectations and set new industry standards.”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 25 of 297 user experience audit services based in the United States

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User experience audit services based in the United States at a glance

As of Sep 29, 2026
35.3%Verified-email coverage
7.4Average contacts per company
1-10Median size (employees)
5.4%Largest-city concentration · New York
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
227
11-50
59
51-200
8
201-500
1
501-1,000
2

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 297 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 user experience audit services, 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 “user experience audit services”. 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 user experience audit services), 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 user experience audit services, 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, 773 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 29, 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 user experience audit services, 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 user experience audit services are there based in the United States?

RevenueBase identified 297 user experience audit services 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?

Saggezza, An Apexon Company, headquartered in Santa Clara, tops this list with the largest team on record.

Which city has the most user experience audit services?

New York leads with 16 headquartered companies, followed by Austin (13) and Chicago (12).

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 773 verified decision-maker contacts tracked across these 297 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 29, 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 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.