Company lists · Data refreshed November 2026
Top 25 Interface design testing firms worldwide
RevenueBase identified 1,997 company matches for interface design testing firms worldwide as of November 2026 and tracks 16,137 professional contacts across them, including 3,729 with verified work emails. The United States is the largest market and London the largest hub.
This list covers company matches for interface design testing firms worldwide, 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. Country and city lists for interface design testing firms follow the table.
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 interface design testing firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 281 contacts → | ||||
Exact match “Qualitrix is a Trust Engineering company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 232 contacts → | ||||
Exact match “GRL is the world’s leading Engineering Services firm helping engineers solve difficult hardware design and validation challenges in adopting digital interface technologies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 226 contacts → | ||||
Exact match “SEnTRA es una empresa que brinda servicios de diseño y construcción de herramientas de certificación para el área de QA y desarrollamos Test de Esfuerzo o de Stress para…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 220 contacts → | ||||
Exact match “With a staggering 1.3 billion individuals living with disabilities worldwide, a number nearly equivalent to the population of India, the imperative to prioritize digital…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 188 contacts → | ||||
Exact match “Fable moves organizations from worrying about compliance, to building exceptional, accessible user experiences.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 182 contacts → | ||||
Exact match “UNGUESS is a cutting-edge crowdsourcing platform that offers quick, effective tests and real insights whenever you need them.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 178 contacts → | ||||
Exact match “We believe in a world where human needs and expectations are at the heart of creating digital experiences that matter.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 155 contacts → | ||||
Exact match “At the heart of innovation is our company's focus - you.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 143 contacts → | ||||
Exact match “Circuit Check is a leading provider of automated test systems and test fixtures for complex electronic products for the automotive, military/aerospace, medical, industrial, and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 132 contacts → | ||||
Exact match “Established in San Francisco in 2009, with offices in Miami, Florida and Madrid, Spain, Userlytics is a state of the art global platform for remote user experience (UX) and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 126 contacts → | ||||
Exact match “The interaction engineering company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 119 contacts → | ||||
Exact match “We believe the Experience Matters.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 112 contacts → | ||||
Exact match “Accessible Minds Tech is your reliable QA partner for functional and non-functional accessibility testing for a wide range of industries.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 110 contacts → | ||||
Exact match “A Sigma Technology Magyarország a Sigma Technology cégcsoport része, amely globális mérnöki szolgáltató vállalatként Svédországban, Norvégiában, Németországban, Ukrajnában és…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 109 contacts → | ||||
Exact match “Strata-G Solutions provides unrivaled competency in test-system engineering to both commercial and military customers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 105 contacts → | ||||
Exact match “Nous sommes les spécialistes de la conception et du design d’interfaces digitales pour les marques.Nous accompagnons nos clients de l’analyse du problème ou de l’opportunité…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 98 contacts → | ||||
Exact match “Musemind: Crafting Digital Experiences That Connect and Transform With a global footprint in Dubai, Berlin, Riyadh, Dhaka, London, and New York, Musemind is more than a Web and UX…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 94 contacts → | ||||
Exact match “Deep Blue specialises in research and consulting on human-centred design and validation in transport, manufacturing, healthcare, and environment.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 93 contacts → | ||||
Exact match “The name says it all.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 92 contacts → | ||||
Exact match “Bold Insight: Empowering exceptional experiences We're creative, flexible, and research-minded.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 85 contacts → | ||||
Exact match “PLUS QA makes software testing simple.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 82 contacts → | ||||
Exact match “GammaUX is a digital UX consultancy that boosts its customers’ business by placing the users at the center of the creative process and in the design of innovative experiences.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 81 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 | |||||
| 24 | 79 contacts → | ||||
Exact match “TPG Interactive (TPGi) is a world-class accessibility consultancy with a reputation for excellence.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 73 contacts → | ||||
Exact match “Vi er en virksomhed, der samler de dygtigste konsulenter I Danmark indenfor test og kvalitetssikring.” Recorded in the RevenueBase company graph · Nov 6, 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 “interface design testing firms”. 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 1,997 interface design testing firms worldwide
See the full list, filter by size, metro and specialty, and access 3,729 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Interface design testing firms worldwide at a glance
As of Nov 6, 2026Companies by employee count
Email recency is reported on each country list linked below.
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.
- Coverage
- Every country. Country and city lists for interface design testing firms are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “interface design 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. 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 3,729 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.
Interface design testing firms by location
14 lists · largest firstEvery Interface design testing firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Interface design testing firms based in the United States395
- Interface design testing firms based in the United Kingdom121
- Interface design testing firms based in India119
- Interface design testing firms based in Germany88
- Interface design testing firms based in France77
- Interface design testing firms based in Canada71
- Interface design testing firms based in the Netherlands46
- Interface design testing firms based in Spain42
- Interface design testing firms based in Sweden34
- Interface design testing firms based in Australia33
- Interface design testing firms based in Poland32
- Interface design testing firms based in Italy30
- Interface design testing firms based in Belgium25
Cities
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 “interface design testing firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many interface design testing firms are there worldwide?
RevenueBase identified 1,997 company matches for interface design testing firms worldwide 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?
Qualitrix tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most interface design testing firms?
The United States leads with 395 companies, followed by the United Kingdom (121) and India (119). Every interface design testing firms list by country and city is linked on this page.
Which city has the most interface design testing firms?
London leads with 51 company records, followed by Bangalore (20) and Paris (19).
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 3,729 professional contacts with verified work emails tracked across these 1,997 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.
Ready to reach these companies? Verified emails and direct dials for all 1,997 interface design testing firms worldwide. 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 25 interface design testing firms worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 1,997 matching company records for interface design testing firms worldwide, with 16,137 tracked contacts and 3,729 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: November 6, 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 interface design testing firms worldwide
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 |  Qualitrixqualitrix.comHQ: Bangalore, IndiaReported employees: 201-500 | Bangalore, India | 201-500 | Exact match | 281 contacts → |
“Qualitrix is a Trust Engineering company.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Granite River Labs INCgraniteriverlabs.comHQ: Santa Clara, United StatesReported employees: 201-500 | Santa Clara, United States | 201-500 | Exact match | 232 contacts → |
“GRL is the world’s leading Engineering Services firm helping engineers solve difficult hardware design and validation challenges in adopting digital interface technologies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Sentra Software House Ltdasentra.clHQ: Santiago, ChileReported employees: 201-500 | Santiago, Chile | 201-500 | Exact match | 226 contacts → |
“SEnTRA es una empresa que brinda servicios de diseño y construcción de herramientas de certificación para el área de QA y desarrollamos Test de Esfuerzo o de Stress para…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  AEL Data Services LLPaeldata.comHQ: Toronto, CanadaReported employees: 501-1,000 | Toronto, Canada | 501-1,000 | Exact match | 220 contacts → |
“With a staggering 1.3 billion individuals living with disabilities worldwide, a number nearly equivalent to the population of India, the imperative to prioritize digital…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  FABLEmakeitfable.comHQ: Toronto, ON, CanadaReported employees: 51-200 | Toronto, ON, Canada | 51-200 | Exact match | 188 contacts → |
“Fable moves organizations from worrying about compliance, to building exceptional, accessible user experiences.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Unguessunguess.ioHQ: Milan, ItalyReported employees: 51-200 | Milan, Italy | 51-200 | Exact match | 182 contacts → |
“UNGUESS is a cutting-edge crowdsourcing platform that offers quick, effective tests and real insights whenever you need them.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Kaiser X Labs. A Company Of Allianzkaiser-x.comHQ: Munich, GermanyReported employees: 51-200 | Munich, Germany | 51-200 | Exact match | 178 contacts → |
“We believe in a world where human needs and expectations are at the heart of creating digital experiences that matter.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | HQ: Zhabei District, SingaporeReported employees: 201-500 | Zhabei District, Singapore | 201-500 | Exact match | 155 contacts → |
“At the heart of innovation is our company's focus - you.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Circuit Check INCcircuitcheck.comHQ: Maple Grove, CA, United StatesReported employees: 201-500 | Maple Grove, CA, United States | 201-500 | Exact match | 143 contacts → |
“Circuit Check is a leading provider of automated test systems and test fixtures for complex electronic products for the automotive, military/aerospace, medical, industrial, and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Userlyticsuserlytics.comHQ: Miami, FL, United StatesReported employees: 51-200 | Miami, FL, United States | 51-200 | Exact match | 132 contacts → |
“Established in San Francisco in 2009, with offices in Miami, Florida and Madrid, Spain, Userlytics is a state of the art global platform for remote user experience (UX) and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  RE LAB S.R.Lre-lab.itHQ: Reggio Emilia, ItalyReported employees: 51-200 | Reggio Emilia, Italy | 51-200 | Exact match | 126 contacts → |
“The interaction engineering company.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Uxbert Labsuxbert.comHQ: Riyadh, Saudi ArabiaReported employees: 11-50 | Riyadh, Saudi Arabia | 11-50 | Exact match | 119 contacts → |
“We believe the Experience Matters.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Accessible Mindsaccessiblemindstech.comHQ: Noida, WY, IndiaReported employees: 51-200 | Noida, WY, India | 51-200 | Exact match | 112 contacts → |
“Accessible Minds Tech is your reliable QA partner for functional and non-functional accessibility testing for a wide range of industries.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Sigma Technology Hungarysigmatechnology.comHQ: Budapest, HungaryReported employees: 201-500 | Budapest, Hungary | 201-500 | Exact match | 110 contacts → |
“A Sigma Technology Magyarország a Sigma Technology cégcsoport része, amely globális mérnöki szolgáltató vállalatként Svédországban, Norvégiában, Németországban, Ukrajnában és…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Strata-G Solutions, LLCstratag-llc.comHQ: Huntsville, AL, United StatesReported employees: 51-200 | Huntsville, AL, United States | 51-200 | Exact match | 109 contacts → |
“Strata-G Solutions provides unrivaled competency in test-system engineering to both commercial and military customers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Ux-Republicux-republic.comHQ: Asnières-sur-seine, FranceReported employees: 51-200 | Asnières-sur-seine, France | 51-200 | Exact match | 105 contacts → |
“Nous sommes les spécialistes de la conception et du design d’interfaces digitales pour les marques.Nous accompagnons nos clients de l’analyse du problème ou de l’opportunité…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Musemindmusemind.agencyHQ: Dubai, United Arab EmiratesReported employees: 51-200 | Dubai, United Arab Emirates | 51-200 | Exact match | 98 contacts → |
“Musemind: Crafting Digital Experiences That Connect and Transform With a global footprint in Dubai, Berlin, Riyadh, Dhaka, London, and New York, Musemind is more than a Web and UX…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Deep Bluedblue.itHQ: Rome, ItalyReported employees: 51-200 | Rome, Italy | 51-200 | Exact match | 94 contacts → |
“Deep Blue specialises in research and consulting on human-centred design and validation in transport, manufacturing, healthcare, and environment.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Ciao Technologiesciao.caHQ: Québec, QC, CanadaReported employees: 51-200 | Québec, QC, Canada | 51-200 | Exact match | 93 contacts → |
“The name says it all.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Bold Insightboldinsight.comHQ: Downers Grove, IL, United StatesReported employees: 51-200 | Downers Grove, IL, United States | 51-200 | Exact match | 92 contacts → |
“Bold Insight: Empowering exceptional experiences We're creative, flexible, and research-minded.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Plus QAplusqa.comHQ: Portland, OR, United StatesReported employees: 51-200 | Portland, OR, United States | 51-200 | Exact match | 85 contacts → |
“PLUS QA makes software testing simple.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Gammauxgammaux.comHQ: Barcelona, SpainReported employees: 51-200 | Barcelona, Spain | 51-200 | Exact match | 82 contacts → |
“GammaUX is a digital UX consultancy that boosts its customers’ business by placing the users at the center of the creative process and in the design of innovative experiences.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Shasta QAshastaqa.comHQ: Redding, CA, United StatesReported employees: 51-200 | Redding, CA, United States | 51-200 | Exact match | 81 contacts → |
“Shasta QA is an American OurSourcing software-testing company with offices located in Northern California and the Midwest.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Tpgi, A Vispero Companytpgi.comHQ: Clearwater, FL, United StatesReported employees: 51-200 | Clearwater, FL, United States | 51-200 | Exact match | 79 contacts → |
“TPG Interactive (TPGi) is a world-class accessibility consultancy with a reputation for excellence.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Q Nationqnation.dkHQ: Copenhagen, DenmarkReported employees: 51-200 | Copenhagen, Denmark | 51-200 | Exact match | 73 contacts → |
“Vi er en virksomhed, der samler de dygtigste konsulenter I Danmark indenfor test og kvalitetssikring.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,997 company matches
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Interface design testing firms: dataset insights
November 6, 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
1,991 records in the displayed employee bands.
6 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 across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 1,997 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 6, 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 ↗
Interface design testing firms by location
14 lists · largest firstEvery Interface design testing firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Interface design testing firms based in the United States395
- Interface design testing firms based in the United Kingdom121
- Interface design testing firms based in India119
- Interface design testing firms based in Germany88
- Interface design testing firms based in France77
- Interface design testing firms based in Canada71
- Interface design testing firms based in the Netherlands46
- Interface design testing firms based in Spain42
- Interface design testing firms based in Sweden34
- Interface design testing firms based in Australia33
- Interface design testing firms based in Poland32
- Interface design testing firms based in Italy30
- Interface design testing firms based in Belgium25
Cities
Questions about this company list
What does Exact match mean for interface design testing firms?
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 interface design testing firms did RevenueBase find worldwide?
The saved snapshot records 1,997 matching company records, 16,137 tracked contacts and 3,729 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: November 6, 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.
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Cite this list
RevenueBase Data Team. Top 25 interface design testing firms worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/interface-design-testing-firms.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 interface design testing firms worldwide
RevenueBase records 1,997 matching company records for interface design testing firms worldwide, with 16,137 tracked contacts and 3,729 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: November 6, 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 interface design testing firms worldwide
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 | Qualitrixqualitrix.com HQ: Bangalore, IndiaReported employees: 201-500 | Bangalore, India | 201-500 | Exact match | 281 contacts → |
“Qualitrix is a Trust Engineering company.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Granite River Labs INCgraniteriverlabs.com HQ: Santa Clara, United StatesReported employees: 201-500 | Santa Clara, United States | 201-500 | Exact match | 232 contacts → |
“GRL is the world’s leading Engineering Services firm helping engineers solve difficult hardware design and validation challenges in adopting digital interface technologies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Sentra Software House Ltdasentra.cl HQ: Santiago, ChileReported employees: 201-500 | Santiago, Chile | 201-500 | Exact match | 226 contacts → |
“SEnTRA es una empresa que brinda servicios de diseño y construcción de herramientas de certificación para el área de QA y desarrollamos Test de Esfuerzo o de Stress para…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | AEL Data Services LLPaeldata.com HQ: Toronto, CanadaReported employees: 501-1,000 | Toronto, Canada | 501-1,000 | Exact match | 220 contacts → |
“With a staggering 1.3 billion individuals living with disabilities worldwide, a number nearly equivalent to the population of India, the imperative to prioritize digital…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | FABLEmakeitfable.com HQ: Toronto, ON, CanadaReported employees: 51-200 | Toronto, ON, Canada | 51-200 | Exact match | 188 contacts → |
“Fable moves organizations from worrying about compliance, to building exceptional, accessible user experiences.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Unguessunguess.io HQ: Milan, ItalyReported employees: 51-200 | Milan, Italy | 51-200 | Exact match | 182 contacts → |
“UNGUESS is a cutting-edge crowdsourcing platform that offers quick, effective tests and real insights whenever you need them.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Kaiser X Labs. A Company Of Allianzkaiser-x.com HQ: Munich, GermanyReported employees: 51-200 | Munich, Germany | 51-200 | Exact match | 178 contacts → |
“We believe in a world where human needs and expectations are at the heart of creating digital experiences that matter.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | HQ: Zhabei District, SingaporeReported employees: 201-500 | Zhabei District, Singapore | 201-500 | Exact match | 155 contacts → |
“At the heart of innovation is our company's focus - you.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Circuit Check INCcircuitcheck.com HQ: Maple Grove, CA, United StatesReported employees: 201-500 | Maple Grove, CA, United States | 201-500 | Exact match | 143 contacts → |
“Circuit Check is a leading provider of automated test systems and test fixtures for complex electronic products for the automotive, military/aerospace, medical, industrial, and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Userlyticsuserlytics.com HQ: Miami, FL, United StatesReported employees: 51-200 | Miami, FL, United States | 51-200 | Exact match | 132 contacts → |
“Established in San Francisco in 2009, with offices in Miami, Florida and Madrid, Spain, Userlytics is a state of the art global platform for remote user experience (UX) and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | RE LAB S.R.Lre-lab.it HQ: Reggio Emilia, ItalyReported employees: 51-200 | Reggio Emilia, Italy | 51-200 | Exact match | 126 contacts → |
“The interaction engineering company.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Uxbert Labsuxbert.com HQ: Riyadh, Saudi ArabiaReported employees: 11-50 | Riyadh, Saudi Arabia | 11-50 | Exact match | 119 contacts → |
“We believe the Experience Matters.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Accessible Mindsaccessiblemindstech.com HQ: Noida, WY, IndiaReported employees: 51-200 | Noida, WY, India | 51-200 | Exact match | 112 contacts → |
“Accessible Minds Tech is your reliable QA partner for functional and non-functional accessibility testing for a wide range of industries.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Sigma Technology Hungarysigmatechnology.com HQ: Budapest, HungaryReported employees: 201-500 | Budapest, Hungary | 201-500 | Exact match | 110 contacts → |
“A Sigma Technology Magyarország a Sigma Technology cégcsoport része, amely globális mérnöki szolgáltató vállalatként Svédországban, Norvégiában, Németországban, Ukrajnában és…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Strata-G Solutions, LLCstratag-llc.com HQ: Huntsville, AL, United StatesReported employees: 51-200 | Huntsville, AL, United States | 51-200 | Exact match | 109 contacts → |
“Strata-G Solutions provides unrivaled competency in test-system engineering to both commercial and military customers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Ux-Republicux-republic.com HQ: Asnières-sur-seine, FranceReported employees: 51-200 | Asnières-sur-seine, France | 51-200 | Exact match | 105 contacts → |
“Nous sommes les spécialistes de la conception et du design d’interfaces digitales pour les marques.Nous accompagnons nos clients de l’analyse du problème ou de l’opportunité…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Musemindmusemind.agency HQ: Dubai, United Arab EmiratesReported employees: 51-200 | Dubai, United Arab Emirates | 51-200 | Exact match | 98 contacts → |
“Musemind: Crafting Digital Experiences That Connect and Transform With a global footprint in Dubai, Berlin, Riyadh, Dhaka, London, and New York, Musemind is more than a Web and UX…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Deep Bluedblue.it HQ: Rome, ItalyReported employees: 51-200 | Rome, Italy | 51-200 | Exact match | 94 contacts → |
“Deep Blue specialises in research and consulting on human-centred design and validation in transport, manufacturing, healthcare, and environment.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Ciao Technologiesciao.ca HQ: Québec, QC, CanadaReported employees: 51-200 | Québec, QC, Canada | 51-200 | Exact match | 93 contacts → |
“The name says it all.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Bold Insightboldinsight.com HQ: Downers Grove, IL, United StatesReported employees: 51-200 | Downers Grove, IL, United States | 51-200 | Exact match | 92 contacts → |
“Bold Insight: Empowering exceptional experiences We're creative, flexible, and research-minded.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Plus QAplusqa.com HQ: Portland, OR, United StatesReported employees: 51-200 | Portland, OR, United States | 51-200 | Exact match | 85 contacts → |
“PLUS QA makes software testing simple.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Gammauxgammaux.com HQ: Barcelona, SpainReported employees: 51-200 | Barcelona, Spain | 51-200 | Exact match | 82 contacts → |
“GammaUX is a digital UX consultancy that boosts its customers’ business by placing the users at the center of the creative process and in the design of innovative experiences.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Shasta QAshastaqa.com HQ: Redding, CA, United StatesReported employees: 51-200 | Redding, CA, United States | 51-200 | Exact match | 81 contacts → |
“Shasta QA is an American OurSourcing software-testing company with offices located in Northern California and the Midwest.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Tpgi, A Vispero Companytpgi.com HQ: Clearwater, FL, United StatesReported employees: 51-200 | Clearwater, FL, United States | 51-200 | Exact match | 79 contacts → |
“TPG Interactive (TPGi) is a world-class accessibility consultancy with a reputation for excellence.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Q Nationqnation.dk HQ: Copenhagen, DenmarkReported employees: 51-200 | Copenhagen, Denmark | 51-200 | Exact match | 73 contacts → |
“Vi er en virksomhed, der samler de dygtigste konsulenter I Danmark indenfor test og kvalitetssikring.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Interface design testing firms: dataset insights
November 6, 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
1,991 records in the displayed employee bands.
6 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 across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 1,997 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 6, 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 ↗
Interface design testing firms by location
14 lists · largest firstEvery Interface design testing firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Interface design testing firms based in the United States395
- Interface design testing firms based in the United Kingdom121
- Interface design testing firms based in India119
- Interface design testing firms based in Germany88
- Interface design testing firms based in France77
- Interface design testing firms based in Canada71
- Interface design testing firms based in the Netherlands46
- Interface design testing firms based in Spain42
- Interface design testing firms based in Sweden34
- Interface design testing firms based in Australia33
- Interface design testing firms based in Poland32
- Interface design testing firms based in Italy30
- Interface design testing firms based in Belgium25
Cities
Questions about this company list
What does Exact match mean for interface design testing firms?
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 interface design testing firms did RevenueBase find worldwide?
The saved snapshot records 1,997 matching company records, 16,137 tracked contacts and 3,729 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: November 6, 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.
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Cite this list
RevenueBase Data Team. Top 25 interface design testing firms worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/interface-design-testing-firms.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗