Company lists · Data refreshed November 2026

Top 25 Website usability testing services based in the United States

RevenueBase identified 98 company matches for website usability testing services associated with the United States as of November 2026 and tracks 847 professional contacts across them, including 334 with verified work emails. Chicago is the largest hub.

This list covers company matches for website usability 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
98Companies
847Contacts tracked
334Verified emails
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The 25 largest website usability testing services based in the United States

Ranked by team size
Top 25 of 98 company matches for website usability 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 matchMiami, FL, United StatesHQ recorded Nov 6, 202651-200132 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchDowners Grove, IL, United StatesHQ recorded Nov 6, 202651-20092 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchMission Viejo, CA, United StatesHQ recorded Nov 6, 202651-20063 contacts →

Exact match

“At Centercode, we believe creating exceptional products that truly meet customer needs requires a robust and effective user testing program.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchPhiladelphia, IL, United StatesHQ recorded Nov 6, 202611-5049 contacts →

Exact match

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

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

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchLas Colinas, TX, United StatesHQ recorded Nov 6, 202611-5029 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchHouston, TX, United StatesHQ recorded Nov 6, 202611-5028 contacts →

Exact match

“End to End User Research offers a wide range of research services to help you understand and design for your end user.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchVancouver, WA, United StatesHQ recorded Nov 6, 202611-5022 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchBaltimore, MD, United StatesHQ recorded Nov 6, 20261-1016 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchNY, United StatesHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“TAKE THE PAIN OUT OF USER RESEARCH The easiest way to recruit testers, launch tests, and analyze results.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchAuburn, WA, United StatesHQ recorded Nov 6, 20261-1011 contacts →

Exact match

“ABOUT US -Headquartered in Kent, Washington, iTishniki specializes in software testing and web development for small businesses and start-ups.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchWalnut Creek, CA, United StatesHQ recorded Nov 6, 202611-5010 contacts →

Exact match

“eXpertStack specializes in eCommerce Testing Services, focusing on fully managed solutions, automated testing, and performance monitoring to enhance user experience, boost sales…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchKirkland, WA, United StatesHQ recorded Nov 6, 202611-508 contacts →

Exact match

“At Caelus LLC we offer our services to organizations of all sizes.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 20261-108 contacts →

Exact match

“We are a thoughtful, meticulous, and creative team of QA testers who are driven to find bugs and usability issues before your customers find them.”

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

Exact match

“Founded in 1975, we are among the most experienced international consulting firms focused on helping world-class clients and leading start ups solve business-critical problems…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchAustin, TX, United StatesHQ recorded Nov 6, 202611-506 contacts →

Exact match

“Experiment Zone helps teams make better decisions about digital experiences through UX research, experimentation, and conversion strategy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchHartford, CT, United StatesHQ recorded Nov 6, 202611-506 contacts →

Exact match

“At affinityUX, we use rapid research to help mission-driven businesses accelerate learning, reduce risk, and get to a winning product faster.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchChevy Chase, MD, United StatesHQ recorded Nov 6, 202611-505 contacts →

Exact match

“We are digital product designers who revitalize SaaS and enterprise applications to make them easy to use.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchMinneapolis, MN, United StatesHQ recorded Nov 6, 20261-104 contacts →

Exact match

“Straight Line Theory is a UX company based in Minneapolis.”

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

Exact match

“AI user testing for prototypes.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact 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
22Exact 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
23Exact matchYork, United StatesHQ recorded Nov 6, 202611-503 contacts →

Exact match

“We are a team of experts in Usability, Interactive Design and Graphic Design.”

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

Exact match

“At CX Insights, we focus on your customer's experience.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchKingston, NH, United StatesHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Usable Interface is an independent UX research consulting company led by Kyle Soucy.”

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

Showing 25 of 98 website usability testing services based in the United States

See the full list, filter by size, metro and specialty, and access 334 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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

As of Nov 6, 2026
39.4%Verified-email coverage
8.6Average contacts per company
1-10Median size (employees)
6.1%Largest-city concentration · Chicago
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
68
11-50
24
51-200
4
501-1,000
1
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 98 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 usability 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 334 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 usability testing services”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 98 company matches for website usability 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?

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

Which city has the most website usability testing services?

Chicago leads with 6 company records, followed by San Francisco (5) and Austin (4).

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 334 professional contacts with verified work emails tracked across these 98 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.

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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.