Company lists · Data refreshed September 2026
Top 25 Api testing contractors based in the United States
RevenueBase identified 94 company matches for api testing contractors associated with the United States as of September 2026 and tracks 6,632 professional contacts across them, including 1,815 with verified work emails. San Francisco is the largest hub.
This list covers company matches for api testing contractors 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 September 30, 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.
The 25 largest api testing contractors based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,396 contacts → | ||||
Exact match “Applause is the global leader in managed software testing services and digital quality.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 2 | 980 contacts → | ||||
Exact match “a1qa is a global software testing and QA outsourcing company trusted by IT firms and Fortune 500 enterprises to deliver software quality that holds under real-world pressure.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 3 | 969 contacts → | ||||
Exact match “SmartBear delivers application integrity for modern tech stacks, ensuring continuous, measurable assurance that software just works as intended – with governance to operate at AI…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 4 | 415 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 · Sep 30, 2026 · View company records in RevenueBase | |||||
| 5 | 403 contacts → | ||||
Exact match “We are celebrating 30 years of testing excellence and innovation at LogiGear, we're proud to be a cornerstone in our clients' journeys, delivering confidence not just in our…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 6 | 221 contacts → | ||||
Exact match “ACCELQ is the only cloud-based continuous testing platform that seamlessly automates API and web testing without writing a single line of code.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 7 | 186 contacts → | ||||
Exact match “Kualitatem empowers businesses to deliver quality software.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 8 | 181 contacts → | ||||
Exact match “Welcome to ImpactQA – Where Excellence Meets Innovation in Software Testing and QA Consulting About Us ImpactQA is a premier Software Testing and QA consultancy delivering…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 9 | 120 contacts → | ||||
Exact match “RTTS is the premier pure-play QA & Testing organization that specializes in Test Automation.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 10 | 90 contacts → | ||||
Exact match “Since 1988, TrustedQA’s mission has been to help our customers build and deliver quality software more efficiently, effectively, and securely.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 11 | 90 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 · Sep 30, 2026 · View company records in RevenueBase | |||||
| 12 | 82 contacts → | ||||
Exact match “PLUS QA makes software testing simple.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 13 | 74 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 · Sep 30, 2026 · View company records in RevenueBase | |||||
| 14 | 34 contacts → | ||||
Exact match “Quality Tech Lab is a leading context-driven company offering a comprehensive range of cost-effective software development and testing services.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 15 | 29 contacts → | ||||
Exact match “Software Testing Services Provider.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 16 | 23 contacts → | ||||
Exact match “PrimeQA, a proud member of NASSCOM and recognized by Startup India, is one of the global leaders in Quality Assurance and Testing.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 17 | 18 contacts → | ||||
Exact match “tap|QA is one of the fastest growing consulting firms in the country, as well as one of the largest firms focused solely on QA, Test Automation, DevOps, and Business Analysis.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 18 | 17 contacts → | ||||
Exact match “APIContext provides outside-in application testing that replicates how your users access your apps.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 19 | 14 contacts → | ||||
Exact match “At PFLB, we're dedicated to helping technology teams scale and optimize their applications with our robust performance testing platform and professional engineering services.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 20 | 13 contacts → | ||||
Exact match “SprintSynergy - AI-Powered QA Testing Agency We help engineering teams ship better software, faster, without QA becoming the bottleneck.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 21 | 10 contacts → | ||||
Exact match “At CelticQA Solutions, we believe quality isn’t a box to check-it’s a culture, a commitment, and a process without end.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 22 | 10 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 · Sep 30, 2026 · View company records in RevenueBase | |||||
| 23 | 8 contacts → | ||||
Exact match “Since 2020, Zebrunner has been helping companies of any size & domain to deliver bug-free apps at a high speed with its Testing Cloud & Infrastructure Solutions.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 24 | 7 contacts → | ||||
Exact match “Anbosoft helps companies build reliable, scalable software quality processes and safely adopt AI in real production environments.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 25 | 7 contacts → | ||||
Exact match “At Stonemill Consulting, independent software testing is all we do.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “api testing contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 94 api testing contractors based in the United States
See the full list, filter by size, metro and specialty, and access 1,815 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Api testing contractors based in the United States at a glance
As of Sep 30, 2026Companies by employee count
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 94 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 “api testing contractors” 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 1,815 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 September 30, 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 “api testing contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many api testing contractors are there based in the United States?
RevenueBase identified 94 company matches for api testing contractors associated with the United States as of September 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?
Applause tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most api testing contractors?
San Francisco leads with 6 company records, followed by New York (5) and Irvine (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 1,815 professional contacts with verified work emails tracked across these 94 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 September 30, 2026.
Ready to reach these companies? Verified emails and direct dials for all 94 api testing contractors based in the United States. Start with a free account, no credit card.
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Api testing contractors by geography
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.
More company lists
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- Lists by location
- Lists A-Z
- New lists
- Api testing contractors based in India
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
- Oil and gas companies based in the United States
Company intelligence · public preview
Top 25 api testing contractors based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 94 matching company records for api testing contractors based in the United States, with 6,632 tracked contacts and 1,815 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 30, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 api testing contractors based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Applauseapplause.comHQ: Framingham, MA, United StatesReported employees: 201-500 | Framingham, MA, United States | 201-500 | Exact match | 1,396 contacts → |
“Applause is the global leader in managed software testing services and digital quality.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  A1qaa1qa.comHQ: Decatur, GA, United StatesReported employees: 1,001-5,000 | Decatur, GA, United States | 1,001-5,000 | Exact match | 980 contacts → |
“a1qa is a global software testing and QA outsourcing company trusted by IT firms and Fortune 500 enterprises to deliver software quality that holds under real-world pressure.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Smartbearsmartbear.comHQ: Somerville, MA, United StatesReported employees: 501-1,000 | Somerville, MA, United States | 501-1,000 | Exact match | 969 contacts → |
“SmartBear delivers application integrity for modern tech stacks, ensuring continuous, measurable assurance that software just works as intended – with governance to operate at AI…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Astegicastegic.comHQ: Falls Church, VA, United StatesReported employees: 51-200 | Falls Church, VA, United States | 51-200 | Exact match | 415 contacts → |
“For 15 years, Astegic has been helping Fortune 500 through startup companies with their Testing & QA needs.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Logigear Corporationlogigear.comHQ: San Mateo, CA, United StatesReported employees: 501-1,000 | San Mateo, CA, United States | 501-1,000 | Exact match | 403 contacts → |
“We are celebrating 30 years of testing excellence and innovation at LogiGear, we're proud to be a cornerstone in our clients' journeys, delivering confidence not just in our…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Accelqaccelq.comHQ: Dallas, TX, United StatesReported employees: 201-500 | Dallas, TX, United States | 201-500 | Exact match | 221 contacts → |
“ACCELQ is the only cloud-based continuous testing platform that seamlessly automates API and web testing without writing a single line of code.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Kualitatem INCkualitatem.comHQ: NY, United StatesReported employees: 201-500 | NY, United States | 201-500 | Exact match | 186 contacts → |
“Kualitatem empowers businesses to deliver quality software.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Impactqaimpactqa.comHQ: Plano, United StatesReported employees: 201-500 | Plano, United States | 201-500 | Exact match | 181 contacts → |
“Welcome to ImpactQA – Where Excellence Meets Innovation in Software Testing and QA Consulting About Us ImpactQA is a premier Software Testing and QA consultancy delivering…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  RTTSrttsweb.comHQ: NY, United StatesReported employees: 51-200 | NY, United States | 51-200 | Exact match | 120 contacts → |
“RTTS is the premier pure-play QA & Testing organization that specializes in Test Automation.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Trustedqa, INCtrustedqa.comHQ: Reston, VA, United StatesReported employees: 51-200 | Reston, VA, United States | 51-200 | Exact match | 90 contacts → |
“Since 1988, TrustedQA’s mission has been to help our customers build and deliver quality software more efficiently, effectively, and securely.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Ibeta Quality Assuranceibeta.comHQ: Aurora, CO, United StatesReported employees: 51-200 | Aurora, CO, United States | 51-200 | Exact match | 90 contacts → |
“Founded in and located in metro Denver, Colorado, iBeta Quality Assurance specializes in “QA on Demand” for software: functionality, compatibility, security, load/performance…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Plus QAplusqa.comHQ: Portland, OR, United StatesReported employees: 51-200 | Portland, OR, United States | 51-200 | Exact match | 82 contacts → |
“PLUS QA makes software testing simple.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Shasta QAshastaqa.comHQ: Redding, CA, United StatesReported employees: 51-200 | Redding, CA, United States | 51-200 | Exact match | 74 contacts → |
“Shasta QA is an American OurSourcing software-testing company with offices located in Northern California and the Midwest.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Quality Tech LABqt-lab.comHQ: Los Angeles, CA, United StatesReported employees: 51-200 | Los Angeles, CA, United States | 51-200 | Exact match | 34 contacts → |
“Quality Tech Lab is a leading context-driven company offering a comprehensive range of cost-effective software development and testing services.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Betasoft INCbetasoft.comHQ: Campbell, CA, United StatesReported employees: 51-200 | Campbell, CA, United States | 51-200 | Exact match | 29 contacts → |
“Software Testing Services Provider.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Primeqa Solutionsprimeqasolutions.comHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 23 contacts → |
“PrimeQA, a proud member of NASSCOM and recognized by Startup India, is one of the global leaders in Quality Assurance and Testing.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  TAPQAtapqa.comHQ: Minneapolis, MN, United StatesReported employees: 51-200 | Minneapolis, MN, United States | 51-200 | Exact match | 18 contacts → |
“tap|QA is one of the fastest growing consulting firms in the country, as well as one of the largest firms focused solely on QA, Test Automation, DevOps, and Business Analysis.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Apicontextapicontext.comHQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 17 contacts → |
“APIContext provides outside-in application testing that replicates how your users access your apps.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | PFLBpflb.us HQ: Mountain View, CA, United StatesReported employees: 1-10 | Mountain View, CA, United States | 1-10 | Exact match | 14 contacts → |
“At PFLB, we're dedicated to helping technology teams scale and optimize their applications with our robust performance testing platform and professional engineering services.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Sprintsynergysprintsynergy.com HQ: Sheridan, WY, United StatesReported employees: 11-50 | Sheridan, WY, United States | 11-50 | Exact match | 13 contacts → |
“SprintSynergy - AI-Powered QA Testing Agency We help engineering teams ship better software, faster, without QA becoming the bottleneck.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Celticqa Solutionscelticqa.comHQ: Kennesaw, GA, United StatesReported employees: 11-50 | Kennesaw, GA, United States | 11-50 | Exact match | 10 contacts → |
“At CelticQA Solutions, we believe quality isn’t a box to check-it’s a culture, a commitment, and a process without end.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Itishnikiitishniki.com HQ: Auburn, WA, United StatesReported employees: 1-10 | Auburn, WA, United States | 1-10 | Exact match | 10 contacts → |
“ABOUT US -Headquartered in Kent, Washington, iTishniki specializes in software testing and web development for small businesses and start-ups.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Zebrunnerzebrunner.com HQ: Roseville, CA, United StatesReported employees: 11-50 | Roseville, CA, United States | 11-50 | Exact match | 8 contacts → |
“Since 2020, Zebrunner has been helping companies of any size & domain to deliver bug-free apps at a high speed with its Testing Cloud & Infrastructure Solutions.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Anbosoftanbosoft.netHQ: Irvine, CA, United StatesReported employees: 11-50 | Irvine, CA, United States | 11-50 | Exact match | 7 contacts → |
“Anbosoft helps companies build reliable, scalable software quality processes and safely adopt AI in real production environments.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Stonemill Consulting, LLCstonemillconsulting.com HQ: Indianapolis, IN, United StatesReported employees: 11-50 | Indianapolis, IN, United States | 11-50 | Exact match | 7 contacts → |
“At Stonemill Consulting, independent software testing is all we do.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 94 company matches
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Api testing contractors: dataset insights
September 30, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
94 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 94 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 30, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for api testing contractors?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many api testing contractors did RevenueBase find based in the United States?
The saved snapshot records 94 matching company records, 6,632 tracked contacts and 1,815 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 30, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Api testing contractors by geography
Cite this list
RevenueBase Data Team. Top 25 api testing contractors based in the United States. Snapshot: September 30, 2026. https://revenuebase.ai/companies/api-testing-contractors/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Api testing contractors based in India
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
- Oil and gas companies based in the United States
Company intelligence · public preview
Top 25 api testing contractors based in the United States
RevenueBase records 94 matching company records for api testing contractors based in the United States, with 6,632 tracked contacts and 1,815 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 30, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 api testing contractors based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Applauseapplause.com HQ: Framingham, MA, United StatesReported employees: 201-500 | Framingham, MA, United States | 201-500 | Exact match | 1,396 contacts → |
“Applause is the global leader in managed software testing services and digital quality.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | A1qaa1qa.com HQ: Decatur, GA, United StatesReported employees: 1,001-5,000 | Decatur, GA, United States | 1,001-5,000 | Exact match | 980 contacts → |
“a1qa is a global software testing and QA outsourcing company trusted by IT firms and Fortune 500 enterprises to deliver software quality that holds under real-world pressure.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Smartbearsmartbear.com HQ: Somerville, MA, United StatesReported employees: 501-1,000 | Somerville, MA, United States | 501-1,000 | Exact match | 969 contacts → |
“SmartBear delivers application integrity for modern tech stacks, ensuring continuous, measurable assurance that software just works as intended – with governance to operate at AI…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Astegicastegic.com HQ: Falls Church, VA, United StatesReported employees: 51-200 | Falls Church, VA, United States | 51-200 | Exact match | 415 contacts → |
“For 15 years, Astegic has been helping Fortune 500 through startup companies with their Testing & QA needs.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Logigear Corporationlogigear.com HQ: San Mateo, CA, United StatesReported employees: 501-1,000 | San Mateo, CA, United States | 501-1,000 | Exact match | 403 contacts → |
“We are celebrating 30 years of testing excellence and innovation at LogiGear, we're proud to be a cornerstone in our clients' journeys, delivering confidence not just in our…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Accelqaccelq.com HQ: Dallas, TX, United StatesReported employees: 201-500 | Dallas, TX, United States | 201-500 | Exact match | 221 contacts → |
“ACCELQ is the only cloud-based continuous testing platform that seamlessly automates API and web testing without writing a single line of code.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Kualitatem INCkualitatem.com HQ: NY, United StatesReported employees: 201-500 | NY, United States | 201-500 | Exact match | 186 contacts → |
“Kualitatem empowers businesses to deliver quality software.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Impactqaimpactqa.com HQ: Plano, United StatesReported employees: 201-500 | Plano, United States | 201-500 | Exact match | 181 contacts → |
“Welcome to ImpactQA – Where Excellence Meets Innovation in Software Testing and QA Consulting About Us ImpactQA is a premier Software Testing and QA consultancy delivering…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | RTTSrttsweb.com HQ: NY, United StatesReported employees: 51-200 | NY, United States | 51-200 | Exact match | 120 contacts → |
“RTTS is the premier pure-play QA & Testing organization that specializes in Test Automation.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Trustedqa, INCtrustedqa.com HQ: Reston, VA, United StatesReported employees: 51-200 | Reston, VA, United States | 51-200 | Exact match | 90 contacts → |
“Since 1988, TrustedQA’s mission has been to help our customers build and deliver quality software more efficiently, effectively, and securely.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Ibeta Quality Assuranceibeta.com HQ: Aurora, CO, United StatesReported employees: 51-200 | Aurora, CO, United States | 51-200 | Exact match | 90 contacts → |
“Founded in and located in metro Denver, Colorado, iBeta Quality Assurance specializes in “QA on Demand” for software: functionality, compatibility, security, load/performance…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Plus QAplusqa.com HQ: Portland, OR, United StatesReported employees: 51-200 | Portland, OR, United States | 51-200 | Exact match | 82 contacts → |
“PLUS QA makes software testing simple.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Shasta QAshastaqa.com HQ: Redding, CA, United StatesReported employees: 51-200 | Redding, CA, United States | 51-200 | Exact match | 74 contacts → |
“Shasta QA is an American OurSourcing software-testing company with offices located in Northern California and the Midwest.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Quality Tech LABqt-lab.com HQ: Los Angeles, CA, United StatesReported employees: 51-200 | Los Angeles, CA, United States | 51-200 | Exact match | 34 contacts → |
“Quality Tech Lab is a leading context-driven company offering a comprehensive range of cost-effective software development and testing services.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Betasoft INCbetasoft.com HQ: Campbell, CA, United StatesReported employees: 51-200 | Campbell, CA, United States | 51-200 | Exact match | 29 contacts → |
“Software Testing Services Provider.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Primeqa Solutionsprimeqasolutions.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 23 contacts → |
“PrimeQA, a proud member of NASSCOM and recognized by Startup India, is one of the global leaders in Quality Assurance and Testing.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | TAPQAtapqa.com HQ: Minneapolis, MN, United StatesReported employees: 51-200 | Minneapolis, MN, United States | 51-200 | Exact match | 18 contacts → |
“tap|QA is one of the fastest growing consulting firms in the country, as well as one of the largest firms focused solely on QA, Test Automation, DevOps, and Business Analysis.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Apicontextapicontext.com HQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 17 contacts → |
“APIContext provides outside-in application testing that replicates how your users access your apps.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | PFLBpflb.us HQ: Mountain View, CA, United StatesReported employees: 1-10 | Mountain View, CA, United States | 1-10 | Exact match | 14 contacts → |
“At PFLB, we're dedicated to helping technology teams scale and optimize their applications with our robust performance testing platform and professional engineering services.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Sprintsynergysprintsynergy.com HQ: Sheridan, WY, United StatesReported employees: 11-50 | Sheridan, WY, United States | 11-50 | Exact match | 13 contacts → |
“SprintSynergy - AI-Powered QA Testing Agency We help engineering teams ship better software, faster, without QA becoming the bottleneck.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Celticqa Solutionscelticqa.com HQ: Kennesaw, GA, United StatesReported employees: 11-50 | Kennesaw, GA, United States | 11-50 | Exact match | 10 contacts → |
“At CelticQA Solutions, we believe quality isn’t a box to check-it’s a culture, a commitment, and a process without end.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Itishnikiitishniki.com HQ: Auburn, WA, United StatesReported employees: 1-10 | Auburn, WA, United States | 1-10 | Exact match | 10 contacts → |
“ABOUT US -Headquartered in Kent, Washington, iTishniki specializes in software testing and web development for small businesses and start-ups.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Zebrunnerzebrunner.com HQ: Roseville, CA, United StatesReported employees: 11-50 | Roseville, CA, United States | 11-50 | Exact match | 8 contacts → |
“Since 2020, Zebrunner has been helping companies of any size & domain to deliver bug-free apps at a high speed with its Testing Cloud & Infrastructure Solutions.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Anbosoftanbosoft.net HQ: Irvine, CA, United StatesReported employees: 11-50 | Irvine, CA, United States | 11-50 | Exact match | 7 contacts → |
“Anbosoft helps companies build reliable, scalable software quality processes and safely adopt AI in real production environments.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Stonemill Consulting, LLCstonemillconsulting.com HQ: Indianapolis, IN, United StatesReported employees: 11-50 | Indianapolis, IN, United States | 11-50 | Exact match | 7 contacts → |
“At Stonemill Consulting, independent software testing is all we do.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 94 company matches
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Api testing contractors: dataset insights
September 30, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
94 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 94 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 30, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for api testing contractors?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many api testing contractors did RevenueBase find based in the United States?
The saved snapshot records 94 matching company records, 6,632 tracked contacts and 1,815 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 30, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Api testing contractors by geography
Cite this list
RevenueBase Data Team. Top 25 api testing contractors based in the United States. Snapshot: September 30, 2026. https://revenuebase.ai/companies/api-testing-contractors/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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