Company lists · Data refreshed November 2026
Top 18 Mainframe testing software companies based in the United States
RevenueBase identified 37 company matches for mainframe testing software companies associated with the United States as of November 2026 and tracks 1,228 professional contacts across them, including 329 with verified work emails. New York is the largest hub.
This list covers company matches for mainframe testing software companies 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 5, 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 18 largest mainframe testing software companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 208 contacts → | ||||
Exact match “Astadia is the industry leader for mainframe migrations and modernizations.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 2 | 135 contacts → | ||||
Exact match “Datagaps builds trust into data - powering confident BI analytics, compliant AI models, and clean, zero-defect migrations at enterprise scale.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 3 | 121 contacts → | ||||
Exact match “RTTS is the premier pure-play QA & Testing organization that specializes in Test Automation.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 4 | 121 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 5 | 91 contacts → | ||||
Exact match “Verifaya is the new-age automated testing software provider that helps businesses overcome their testing challenges and accelerate business growth.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 6 | 60 contacts → | ||||
Exact match “Fusion Systems and Services Inc is a Software products and IT consultancy providing company.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 7 | 45 contacts → | ||||
Exact match “Bauer Controls is the industry leader in developing data collection, data analysis, test control, and data reporting software.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 8 | 42 contacts → | ||||
Exact match “Cycle Labs delivers enterprise-grade automated testing solutions that accelerate software delivery and reduce risk across complex systems.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 9 | 39 contacts → | ||||
Exact match “Here at Qameta Software, we work hard to deliver the best software quality solutions for professionals.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 10 | 26 contacts → | ||||
Exact match “Select provides comprehensive solutions consisting of tools and services for information access and enterprise reporting, as well as business critical IT software development…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 11 | 25 contacts → | ||||
Exact match “Better Code Through Automation 3Qi Labs launched in 2010 with a simple goal: Help enterprise application development and QA teams use test automation effectively.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 12 | 18 contacts → | ||||
Exact match “ALP International (ALPI) is a leading provider of test process improvement, test automation, and training services in the Washington, D.C.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 13 | 11 contacts → | ||||
Exact match “SFI offers one of the most comprehensive portfolios of IBM Mainframe software expertise in North America.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 14 | 7 contacts → | ||||
Exact match “Since 1980 MacKinney Systems has been the industry leader in top-quality, low-cost mainframe software.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 15 | 7 contacts → | ||||
Exact match “ColeSoft believes clarity is your competitive advantage in mainframe development.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 16 | 7 contacts → | ||||
Exact match “Trinity Technologies is a leading global technology company.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 17 | 4 contacts → | ||||
Exact match “Ascert was founded in 1992 as a supplier of specialized testing software and services to the Tandem NonStop server market - a platform for which "failure is not an option."…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 18 | 2 contacts → | ||||
Exact match “We specialize in direct-hire, permanent placement of COBOL and mainframe professionals for banks, airlines, government agencies, financial institutions, insurance, healthcare…” Recorded in the RevenueBase company graph · Nov 5, 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 “mainframe testing software companies”. 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 18 of 37 mainframe testing software companies based in the United States
See the full list, filter by size, metro and specialty, and access 329 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Mainframe testing software companies based in the United States at a glance
As of Nov 5, 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 37 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 “mainframe testing software companies” 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 329 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 5, 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 “mainframe testing software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many mainframe testing software companies are there based in the United States?
RevenueBase identified 37 company matches for mainframe testing software companies 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?
Astadia tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most mainframe testing software companies?
New York leads with 3 company records, followed by San Francisco (2) and Atlanta (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 329 professional contacts with verified work emails tracked across these 37 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 5, 2026.
Ready to reach these companies? Verified emails and direct dials for all 37 mainframe testing software companies 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.
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Company intelligence · public preview
Top 18 mainframe testing software companies 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 37 matching company records for mainframe testing software companies based in the United States, with 1,228 tracked contacts and 329 verified work emails.
This public preview shows 18 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 5, 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 18 mainframe testing software companies 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 |  Astadiaastadia.comHQ: St. Louis, MO, United StatesReported employees: 201-500 | St. Louis, MO, United States | 201-500 | Exact match | 208 contacts → |
“Astadia is the industry leader for mainframe migrations and modernizations.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Datagapsdatagaps.comHQ: Herndon, VA, United StatesReported employees: 51-200 | Herndon, VA, United States | 51-200 | Exact match | 135 contacts → |
“Datagaps builds trust into data - powering confident BI analytics, compliant AI models, and clean, zero-defect migrations at enterprise scale.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  RTTSrttsweb.comHQ: NY, United StatesReported employees: 51-200 | NY, United States | 51-200 | Exact match | 121 contacts → |
“RTTS is the premier pure-play QA & Testing organization that specializes in Test Automation.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Appperfect Corpappperfect.comHQ: Cupertino, CA, United StatesReported employees: 51-200 | Cupertino, CA, United States | 51-200 | Exact match | 121 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 5 |  Verifaya Corporationverifaya.comHQ: Milpitas, CA, United StatesReported employees: 51-200 | Milpitas, CA, United States | 51-200 | Exact match | 91 contacts → |
“Verifaya is the new-age automated testing software provider that helps businesses overcome their testing challenges and accelerate business growth.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Fusion Systems And Services INCfusionsystemsinc.comHQ: Schaumburg, IL, United StatesReported employees: 51-200 | Schaumburg, IL, United States | 51-200 | Exact match | 60 contacts → |
“Fusion Systems and Services Inc is a Software products and IT consultancy providing company.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Bauer Controlsbauercontrols.comHQ: Plymouth, MI, United StatesReported employees: 11-50 | Plymouth, MI, United States | 11-50 | Exact match | 45 contacts → |
“Bauer Controls is the industry leader in developing data collection, data analysis, test control, and data reporting software.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Cycle Labscyclelabs.ioHQ: Raleigh, NC, United StatesReported employees: 11-50 | Raleigh, NC, United States | 11-50 | Exact match | 42 contacts → |
“Cycle Labs delivers enterprise-grade automated testing solutions that accelerate software delivery and reduce risk across complex systems.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Qameta Softwareqameta.ioHQ: Fairfax, VA, United StatesReported employees: 11-50 | Fairfax, VA, United States | 11-50 | Exact match | 39 contacts → |
“Here at Qameta Software, we work hard to deliver the best software quality solutions for professionals.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Select Business Solutionsselectbs.comHQ: Shelton, CT, United StatesReported employees: 51-200 | Shelton, CT, United States | 51-200 | Exact match | 26 contacts → |
“Select provides comprehensive solutions consisting of tools and services for information access and enterprise reporting, as well as business critical IT software development…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  3qi Labs3qilabs.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 25 contacts → |
“Better Code Through Automation 3Qi Labs launched in 2010 with a simple goal: Help enterprise application development and QA teams use test automation effectively.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  ALP International Corporationalpi.comHQ: Chevy Chase, MD, United StatesReported employees: 51-200 | Chevy Chase, MD, United States | 51-200 | Exact match | 18 contacts → |
“ALP International (ALPI) is a leading provider of test process improvement, test automation, and training services in the Washington, D.C.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Streamfoundrystreamfoundry.comHQ: Newton, MA, United StatesReported employees: 11-50 | Newton, MA, United States | 11-50 | Exact match | 11 contacts → |
“SFI offers one of the most comprehensive portfolios of IBM Mainframe software expertise in North America.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Mackinney Systemsmackinney.comHQ: Springfield, MO, United StatesReported employees: 1-10 | Springfield, MO, United States | 1-10 | Exact match | 7 contacts → |
“Since 1980 MacKinney Systems has been the industry leader in top-quality, low-cost mainframe software.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Colesoftcolesoft.comHQ: Norfolk, VA, United StatesReported employees: 11-50 | Norfolk, VA, United States | 11-50 | Exact match | 7 contacts → |
“ColeSoft believes clarity is your competitive advantage in mainframe development.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Trinity Technologies Corptrinitytec.netHQ: Irvine, CA, United StatesReported employees: 51-200 | Irvine, CA, United States | 51-200 | Exact match | 7 contacts → |
“Trinity Technologies is a leading global technology company.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Ascertascert.comHQ: Sausalito, CA, United StatesReported employees: 51-200 | Sausalito, CA, United States | 51-200 | Exact match | 4 contacts → |
“Ascert was founded in 1992 as a supplier of specialized testing software and services to the Tandem NonStop server market - a platform for which "failure is not an option."…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Lobocoderslobocoders.comHQ: New York, NY, United StatesReported employees: 1-10 | New York, NY, United States | 1-10 | Exact match | 2 contacts → |
“We specialize in direct-hire, permanent placement of COBOL and mainframe professionals for banks, airlines, government agencies, financial institutions, insurance, healthcare…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 18 of 37 company matches
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Mainframe testing software companies: dataset insights
November 5, 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
37 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 37 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: November 5, 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 mainframe testing software companies?
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 mainframe testing software companies did RevenueBase find based in the United States?
The saved snapshot records 37 matching company records, 1,228 tracked contacts and 329 verified emails. The public preview displays 18 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: November 5, 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
Cite this list
RevenueBase Data Team. Top 18 mainframe testing software companies based in the United States. Snapshot: November 5, 2026. https://revenuebase.ai/companies/mainframe-testing-software-companies/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
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Fintech companies based in the United States
- Insurtech companies based in the United States
- Machine learning companies based in the United States
- Market research companies based in the United States
Company intelligence · public preview
Top 18 mainframe testing software companies based in the United States
RevenueBase records 37 matching company records for mainframe testing software companies based in the United States, with 1,228 tracked contacts and 329 verified work emails.
This public preview shows 18 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 5, 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 18 mainframe testing software companies 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 | Astadiaastadia.com HQ: St. Louis, MO, United StatesReported employees: 201-500 | St. Louis, MO, United States | 201-500 | Exact match | 208 contacts → |
“Astadia is the industry leader for mainframe migrations and modernizations.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Datagapsdatagaps.com HQ: Herndon, VA, United StatesReported employees: 51-200 | Herndon, VA, United States | 51-200 | Exact match | 135 contacts → |
“Datagaps builds trust into data - powering confident BI analytics, compliant AI models, and clean, zero-defect migrations at enterprise scale.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | RTTSrttsweb.com HQ: NY, United StatesReported employees: 51-200 | NY, United States | 51-200 | Exact match | 121 contacts → |
“RTTS is the premier pure-play QA & Testing organization that specializes in Test Automation.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Appperfect Corpappperfect.com HQ: Cupertino, CA, United StatesReported employees: 51-200 | Cupertino, CA, United States | 51-200 | Exact match | 121 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 5 | Verifaya Corporationverifaya.com HQ: Milpitas, CA, United StatesReported employees: 51-200 | Milpitas, CA, United States | 51-200 | Exact match | 91 contacts → |
“Verifaya is the new-age automated testing software provider that helps businesses overcome their testing challenges and accelerate business growth.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Fusion Systems And Services INCfusionsystemsinc.com HQ: Schaumburg, IL, United StatesReported employees: 51-200 | Schaumburg, IL, United States | 51-200 | Exact match | 60 contacts → |
“Fusion Systems and Services Inc is a Software products and IT consultancy providing company.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Bauer Controlsbauercontrols.com HQ: Plymouth, MI, United StatesReported employees: 11-50 | Plymouth, MI, United States | 11-50 | Exact match | 45 contacts → |
“Bauer Controls is the industry leader in developing data collection, data analysis, test control, and data reporting software.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Cycle Labscyclelabs.io HQ: Raleigh, NC, United StatesReported employees: 11-50 | Raleigh, NC, United States | 11-50 | Exact match | 42 contacts → |
“Cycle Labs delivers enterprise-grade automated testing solutions that accelerate software delivery and reduce risk across complex systems.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Qameta Softwareqameta.io HQ: Fairfax, VA, United StatesReported employees: 11-50 | Fairfax, VA, United States | 11-50 | Exact match | 39 contacts → |
“Here at Qameta Software, we work hard to deliver the best software quality solutions for professionals.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Select Business Solutionsselectbs.com HQ: Shelton, CT, United StatesReported employees: 51-200 | Shelton, CT, United States | 51-200 | Exact match | 26 contacts → |
“Select provides comprehensive solutions consisting of tools and services for information access and enterprise reporting, as well as business critical IT software development…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | 3qi Labs3qilabs.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 25 contacts → |
“Better Code Through Automation 3Qi Labs launched in 2010 with a simple goal: Help enterprise application development and QA teams use test automation effectively.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | ALP International Corporationalpi.com HQ: Chevy Chase, MD, United StatesReported employees: 51-200 | Chevy Chase, MD, United States | 51-200 | Exact match | 18 contacts → |
“ALP International (ALPI) is a leading provider of test process improvement, test automation, and training services in the Washington, D.C.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Streamfoundrystreamfoundry.com HQ: Newton, MA, United StatesReported employees: 11-50 | Newton, MA, United States | 11-50 | Exact match | 11 contacts → |
“SFI offers one of the most comprehensive portfolios of IBM Mainframe software expertise in North America.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Mackinney Systemsmackinney.com HQ: Springfield, MO, United StatesReported employees: 1-10 | Springfield, MO, United States | 1-10 | Exact match | 7 contacts → |
“Since 1980 MacKinney Systems has been the industry leader in top-quality, low-cost mainframe software.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Colesoftcolesoft.com HQ: Norfolk, VA, United StatesReported employees: 11-50 | Norfolk, VA, United States | 11-50 | Exact match | 7 contacts → |
“ColeSoft believes clarity is your competitive advantage in mainframe development.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Trinity Technologies Corptrinitytec.net HQ: Irvine, CA, United StatesReported employees: 51-200 | Irvine, CA, United States | 51-200 | Exact match | 7 contacts → |
“Trinity Technologies is a leading global technology company.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Ascertascert.com HQ: Sausalito, CA, United StatesReported employees: 51-200 | Sausalito, CA, United States | 51-200 | Exact match | 4 contacts → |
“Ascert was founded in 1992 as a supplier of specialized testing software and services to the Tandem NonStop server market - a platform for which "failure is not an option."…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Lobocoderslobocoders.com HQ: New York, NY, United StatesReported employees: 1-10 | New York, NY, United States | 1-10 | Exact match | 2 contacts → |
“We specialize in direct-hire, permanent placement of COBOL and mainframe professionals for banks, airlines, government agencies, financial institutions, insurance, healthcare…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 18 of 37 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Mainframe testing software companies: dataset insights
November 5, 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
37 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 37 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: November 5, 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 mainframe testing software companies?
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 mainframe testing software companies did RevenueBase find based in the United States?
The saved snapshot records 37 matching company records, 1,228 tracked contacts and 329 verified emails. The public preview displays 18 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: November 5, 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
Cite this list
RevenueBase Data Team. Top 18 mainframe testing software companies based in the United States. Snapshot: November 5, 2026. https://revenuebase.ai/companies/mainframe-testing-software-companies/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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