Company lists · Data refreshed November 2026

Top 15 User acceptance testing firms based in the United States

RevenueBase identified 51 company matches for user acceptance testing firms associated with the United States as of November 2026 and tracks 1,368 professional contacts across them, including 300 with verified work emails. New York is the largest hub.

This list covers company matches for user acceptance testing firms 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
51Companies
1,368Contacts tracked
300Verified emails
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The 15 largest user acceptance testing firms based in the United States

Ranked by team size
Top 15 of 51 company matches for user acceptance testing firms 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 matchFalls Church, VA, United StatesHQ recorded Nov 6, 202651-200419 contacts →

Exact match

“For 15 years, Astegic has been helping Fortune 500 through startup companies with their Testing & QA needs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchNY, United StatesHQ recorded Nov 6, 202651-200121 contacts →

Exact match

“RTTS is the premier pure-play QA & Testing organization that specializes in Test Automation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchAurora, CO, United StatesHQ recorded Nov 6, 202651-20097 contacts →

Exact match

“Founded in and located in metro Denver, Colorado, iBeta Quality Assurance specializes in “QA on Demand” for software: functionality, compatibility, security, load/performance…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchPortland, OR, United StatesHQ recorded Nov 6, 202651-20085 contacts →

Exact match

“PLUS QA makes software testing simple.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchRedding, CA, United StatesHQ recorded Nov 6, 202651-20081 contacts →

Exact match

“Shasta QA is an American OurSourcing software-testing company with offices located in Northern California and the Midwest.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchLake Barrington, IL, United StatesHQ recorded Nov 6, 202651-20045 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 202651-20023 contacts →

Exact match

“PrimeQA Solutions is a software testing and QA services company based in San Francisco, helping startups, product companies, and growing businesses build software that performs…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchCorte Madera, CA, United StatesHQ recorded Nov 6, 202611-5016 contacts →

Exact match

“Get Your Software Right From Day One.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact 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
10Exact matchBurlington, MA, United StatesHQ recorded Nov 6, 202611-509 contacts →

Exact match

“UAT and validation expertise.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact 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
12Exact matchIndianapolis, IN, United StatesHQ recorded Nov 6, 202611-507 contacts →

Exact match

“At Stonemill Consulting, independent software testing is all we do.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchCoppell, TX, United StatesHQ recorded Nov 6, 202611-503 contacts →

Exact match

“We are a leading independent Software Testing firm that offers outstanding solutions to our customers and partners all around the world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchRaleigh-durham, NC, United StatesHQ recorded Nov 6, 20261-101 contacts →

Exact match

“Quality assurance consulting and testing services, web/mobile application testing and eCommerce website testing.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchLos Gatos, CA, United StatesHQ recorded Nov 6, 20261-101 contacts →

Exact match

“Contract QA for websites and applications.”

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

Showing 15 of 51 user acceptance testing firms based in the United States

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User acceptance testing firms based in the United States at a glance

As of Nov 6, 2026
21.9%Verified-email coverage
26.8Average contacts per company
11-50Median size (employees)
5.9%Largest-city concentration · New York
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
23
11-50
13
51-200
12
501-1,000
2
1,001-5,000
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 51 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 “user acceptance testing firms” 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 300 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 “user acceptance testing firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many user acceptance testing firms are there based in the United States?

RevenueBase identified 51 company matches for user acceptance testing firms 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?

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

Which city has the most user acceptance testing firms?

New York leads with 3 company records, followed by San Francisco (3) and Aliso Viejo (1).

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 300 professional contacts with verified work emails tracked across these 51 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.