Company lists · Data refreshed October 2026
Top 25 Functional tester suppliers worldwide
RevenueBase identified 1,744 company matches for functional tester suppliers worldwide as of October 2026 and tracks 87,593 professional contacts across them, including 21,892 with verified work emails. The United States is the largest market and Bangalore the largest hub.
This list covers company matches for functional tester suppliers 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 October 25, 2026. Country and city lists for functional tester suppliers 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 functional tester suppliers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 13,548 contacts → | ||||
Exact match “KLA develops industry-leading equipment and services that enable innovation throughout the electronics industry.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 2 | 7,353 contacts → | ||||
Exact match “In 2023, Emerson acquired NI and introduced its new Test & Measurement business group.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 3 | 4,734 contacts → | ||||
Exact match “GAO Tek is a member of GAO Group of Companies, headquartered in New York City, USA & Toronto, Canada with a strong global presence.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 4 | 3,577 contacts → | ||||
Exact match “We design and manufacture test and measurement solutions to break through the walls of complexity and accelerate global innovation.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 5 | 1,755 contacts → | ||||
Exact match “UTAC Holdings Ltd (“UTAC”) is a leading independent provider of assembly and test services for a broad range of integrated circuits with diversified end uses, including…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 6 | 1,578 contacts → | ||||
Exact match “FormFactor is a leading provider of essential test and measurement technologies along the full IC life cycle – from characterization, modeling, reliability, and design debug, to…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 7 | 1,462 contacts → | ||||
Exact match “Since 1895 Anritsu has been leading the way as a pioneer in information communications equipment, contributing to the evolution and development of communications technologies.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 8 | 1,239 contacts → | ||||
Exact match “Unisem is a global provider of semiconductor assembly and test (OSAT) services for many of the world's most successful electronics companies.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 9 | 1,057 contacts → | ||||
Exact match “Instron manufactures and services a wide range of cutting-edge materials testing equipment used by research scientists, design engineers, and quality control managers.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 10 | 822 contacts → | ||||
Exact match “Cohu is the leading supplier of semiconductor test handlers and contactors, and a growing provider of automated test equipment, inspection & metrology solutions, and data…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 11 | 821 contacts → | ||||
Exact match “Mycronic has been a trusted partner to electronics and display manufacturers worldwide for more than 50 years.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 12 | 797 contacts → | ||||
Exact match “Cordon Group was founded in 1989 by its CEO, Serge CORDON in Dinan (France) where the head office is located as well as one of its main repair centres.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 13 | 777 contacts → | ||||
Exact match “Since 1976, SPEA designs and manufactures the best automatic test equipment for Semiconductor ICs, MEMS, electronic boards and modules.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 14 | 739 contacts → | ||||
Exact match “King Yuan Electronics Corp.(KYEC) provides wafer probing, final product test and assembly service for the semiconductor backend supply chain.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 15 | 698 contacts → | ||||
Exact match “At Transcat, we are the global leader in test and measurement equipment and calibration services for highly technical industries, including life sciences, power generation…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 16 | 667 contacts → | ||||
Exact match “AEM is a global leader in test innovation.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 17 | 592 contacts → | ||||
Exact match “A Success Enabler ASE Electronics (M) Sdn.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 18 | 580 contacts → | ||||
Exact match “IPTE is a worldwide leader in automation solutions for the production and testing of electronics.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 19 | 558 contacts → | ||||
Exact match “As of January 2026, Averna and Spherea joined forces to form the Spherea Group.” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 20 | 548 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 21 | 538 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 22 | 520 contacts → | ||||
Exact match “Link Group, Inc.(LINK), parent to Link Engineering Company, Link Industries and Tescor, consists of businesses that offer customized solutions, with a focus on delivering high…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 23 | 491 contacts → | ||||
Exact match “Teledyne LeCroy is a leading manufacturer of advanced oscilloscopes, protocol analyzers, and other test instruments that verify performance, validate compliance, and debug complex…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 24 | 476 contacts → | ||||
Exact match “Spherea Group: A 60-Year Legacy Since 1965, the Spherea Group has built a strong legacy in test and quality solutions, rooted in the electronics activities of Aerospatiale, where…” Recorded in the RevenueBase company graph · Oct 25, 2026 · View company records in RevenueBase | |||||
| 25 | 457 contacts → | ||||
Exact match “Founded in 1984, Chroma ATE Inc.” Recorded in the RevenueBase company graph · Oct 25, 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 “functional tester suppliers”. 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 1,744 functional tester suppliers worldwide
See the full list, filter by size, metro and specialty, and access 21,892 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Functional tester suppliers worldwide at a glance
As of Oct 25, 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 functional tester suppliers are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “functional tester suppliers” 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 21,892 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 October 25, 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.
Functional tester suppliers by location
13 lists · largest firstEvery Functional tester suppliers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Functional tester suppliers based in the United States308
- Functional tester suppliers based in India163
- Functional tester suppliers based in Germany106
- Functional tester suppliers based in the United Kingdom93
- Functional tester suppliers based in Italy72
- Functional tester suppliers based in Malaysia50
- Functional tester suppliers based in France44
- Functional tester suppliers based in Brazil43
- Functional tester suppliers based in Taiwan34
- Functional tester suppliers based in Canada33
- Functional tester suppliers based in Türkiye28
- Functional tester suppliers based in Spain26
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 “functional tester suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many functional tester suppliers are there worldwide?
RevenueBase identified 1,744 company matches for functional tester suppliers worldwide as of October 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?
KLA tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most functional tester suppliers?
The United States leads with 308 companies, followed by India (163) and Germany (106). Every functional tester suppliers list by country and city is linked on this page.
Which city has the most functional tester suppliers?
Bangalore leads with 33 company records, followed by Singapore (26) and Shenzhen (23).
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 21,892 professional contacts with verified work emails tracked across these 1,744 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 October 25, 2026.
Ready to reach these companies? Verified emails and direct dials for all 1,744 functional tester suppliers 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.
More company lists
Company intelligence · public preview
Top 25 functional tester suppliers worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 1,744 matching company records for functional tester suppliers worldwide, with 87,593 tracked contacts and 21,892 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: October 25, 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 functional tester suppliers 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 |  KLAkla.comHQ: Milpitas, CA, United StatesReported employees: 10001+ | Milpitas, CA, United States | 10001+ | Exact match | 13,548 contacts → |
“KLA develops industry-leading equipment and services that enable innovation throughout the electronics industry.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  NI National Instrumentsni.comHQ: Austin, TX, United StatesReported employees: 5,001-10,000 | Austin, TX, United States | 5,001-10,000 | Exact match | 7,353 contacts → |
“In 2023, Emerson acquired NI and introduced its new Test & Measurement business group.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Gaotek INCgaotek.com HQ: New York, NY, United StatesReported employees: Not recorded | New York, NY, United States | Not recorded | Exact match | 4,734 contacts → |
“GAO Tek is a member of GAO Group of Companies, headquartered in New York City, USA & Toronto, Canada with a strong global presence.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Tektronixtek.comHQ: Beaverton, OR, United StatesReported employees: 1,001-5,000 | Beaverton, OR, United States | 1,001-5,000 | Exact match | 3,577 contacts → |
“We design and manufacture test and measurement solutions to break through the walls of complexity and accelerate global innovation.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | UTACutacgroup.com HQ: SingaporeReported employees: 10001+ | Singapore | 10001+ | Exact match | 1,755 contacts → |
“UTAC Holdings Ltd (“UTAC”) is a leading independent provider of assembly and test services for a broad range of integrated circuits with diversified end uses, including…” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Formfactor INCformfactor.com HQ: Livermore, CA, United StatesReported employees: 1,001-5,000 | Livermore, CA, United States | 1,001-5,000 | Exact match | 1,578 contacts → |
“FormFactor is a leading provider of essential test and measurement technologies along the full IC life cycle – from characterization, modeling, reliability, and design debug, to…” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Anritsuanritsu.com HQ: Atsugi-shi, JapanReported employees: 1,001-5,000 | Atsugi-shi, Japan | 1,001-5,000 | Exact match | 1,462 contacts → |
“Since 1895 Anritsu has been leading the way as a pioneer in information communications equipment, contributing to the evolution and development of communications technologies.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Unisemunisemgroup.com HQ: Kuala Lumpur, MalaysiaReported employees: 5,001-10,000 | Kuala Lumpur, Malaysia | 5,001-10,000 | Exact match | 1,239 contacts → |
“Unisem is a global provider of semiconductor assembly and test (OSAT) services for many of the world's most successful electronics companies.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Instroninstron.comHQ: Norwood, MA, United StatesReported employees: 1,001-5,000 | Norwood, MA, United States | 1,001-5,000 | Exact match | 1,057 contacts → |
“Instron manufactures and services a wide range of cutting-edge materials testing equipment used by research scientists, design engineers, and quality control managers.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Cohu, INCcohu.com HQ: San Diego, CA, United StatesReported employees: 1,001-5,000 | San Diego, CA, United States | 1,001-5,000 | Exact match | 822 contacts → |
“Cohu is the leading supplier of semiconductor test handlers and contactors, and a growing provider of automated test equipment, inspection & metrology solutions, and data…” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Mycronicmycronic.com HQ: Täby, SwedenReported employees: 1,001-5,000 | Täby, Sweden | 1,001-5,000 | Exact match | 821 contacts → |
“Mycronic has been a trusted partner to electronics and display manufacturers worldwide for more than 50 years.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Cordon Groupcordongroup.comHQ: Dinan, FranceReported employees: 1,001-5,000 | Dinan, France | 1,001-5,000 | Exact match | 797 contacts → |
“Cordon Group was founded in 1989 by its CEO, Serge CORDON in Dinan (France) where the head office is located as well as one of its main repair centres.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | SPEAspea.com HQ: Volpiano, ItalyReported employees: 501-1,000 | Volpiano, Italy | 501-1,000 | Exact match | 777 contacts → |
“Since 1976, SPEA designs and manufactures the best automatic test equipment for Semiconductor ICs, MEMS, electronic boards and modules.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | KYECkyec.com.tw HQ: Chu-nan, ChinaReported employees: 5,001-10,000 | Chu-nan, China | 5,001-10,000 | Exact match | 739 contacts → |
“King Yuan Electronics Corp.(KYEC) provides wafer probing, final product test and assembly service for the semiconductor backend supply chain.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Transcattranscat.comHQ: Rochester, NY, United StatesReported employees: 501-1,000 | Rochester, NY, United States | 501-1,000 | Exact match | 698 contacts → |
“At Transcat, we are the global leader in test and measurement equipment and calibration services for highly technical industries, including life sciences, power generation…” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  AEMaem.com.sgHQ: SingaporeReported employees: 1,001-5,000 | Singapore | 1,001-5,000 | Exact match | 667 contacts → |
“AEM is a global leader in test innovation.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | ASE Electronics M SDN BHDasemal.com.my HQ: Bayan Lepas, MalaysiaReported employees: 1,001-5,000 | Bayan Lepas, Malaysia | 1,001-5,000 | Exact match | 592 contacts → |
“A Success Enabler ASE Electronics (M) Sdn.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  IPTEipte.comHQ: Genk, MexicoReported employees: 501-1,000 | Genk, Mexico | 501-1,000 | Exact match | 580 contacts → |
“IPTE is a worldwide leader in automation solutions for the production and testing of electronics.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Avernaaverna.comHQ: Montreal, QC, CanadaReported employees: 1,001-5,000 | Montreal, QC, Canada | 1,001-5,000 | Exact match | 558 contacts → |
“As of January 2026, Averna and Spherea joined forces to form the Spherea Group.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Keysight Technologies Malaysiakeysight.comHQ: United StatesReported employees: 1,001-5,000 | United States | 1,001-5,000 | Exact match | 548 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 | Carsem M Sdn. BHDcarsem.com HQ: United StatesReported employees: 10001+ | United States | 10001+ | Exact match | 538 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 22 | Link Engineering Companylinkeng.com HQ: Plymouth, MI, United StatesReported employees: 501-1,000 | Plymouth, MI, United States | 501-1,000 | Exact match | 520 contacts → |
“Link Group, Inc.(LINK), parent to Link Engineering Company, Link Industries and Tescor, consists of businesses that offer customized solutions, with a focus on delivering high…” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Teledyne Lecroyteledynelecroy.com HQ: Chestnut Ridge, NY, United StatesReported employees: 201-500 | Chestnut Ridge, NY, United States | 201-500 | Exact match | 491 contacts → |
“Teledyne LeCroy is a leading manufacturer of advanced oscilloscopes, protocol analyzers, and other test instruments that verify performance, validate compliance, and debug complex…” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Spherea Groupspherea.comHQ: Toulouse, FranceReported employees: 1,001-5,000 | Toulouse, France | 1,001-5,000 | Exact match | 476 contacts → |
“Spherea Group: A 60-Year Legacy Since 1965, the Spherea Group has built a strong legacy in test and quality solutions, rooted in the electronics activities of Aerospatiale, where…” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Chroma ATE INCchromaate.comHQ: Taoyuan City, TaiwanReported employees: 1,001-5,000 | Taoyuan City, Taiwan | 1,001-5,000 | Exact match | 457 contacts → |
“Founded in 1984, Chroma ATE Inc.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,744 company matches
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Functional tester suppliers: dataset insights
October 25, 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
1,739 records in the displayed employee bands.
5 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 1,744 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: October 25, 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 ↗
Functional tester suppliers by location
13 lists · largest firstEvery Functional tester suppliers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Functional tester suppliers based in the United States308
- Functional tester suppliers based in India163
- Functional tester suppliers based in Germany106
- Functional tester suppliers based in the United Kingdom93
- Functional tester suppliers based in Italy72
- Functional tester suppliers based in Malaysia50
- Functional tester suppliers based in France44
- Functional tester suppliers based in Brazil43
- Functional tester suppliers based in Taiwan34
- Functional tester suppliers based in Canada33
- Functional tester suppliers based in Türkiye28
- Functional tester suppliers based in Spain26
Cities
Questions about this company list
What does Exact match mean for functional tester suppliers?
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 functional tester suppliers did RevenueBase find worldwide?
The saved snapshot records 1,744 matching company records, 87,593 tracked contacts and 21,892 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: October 25, 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 functional tester suppliers worldwide. Snapshot: October 25, 2026. https://revenuebase.ai/companies/browse/functional-tester-suppliers.
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 functional tester suppliers worldwide
RevenueBase records 1,744 matching company records for functional tester suppliers worldwide, with 87,593 tracked contacts and 21,892 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: October 25, 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 functional tester suppliers 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 | KLAkla.com HQ: Milpitas, CA, United StatesReported employees: 10001+ | Milpitas, CA, United States | 10001+ | Exact match | 13,548 contacts → |
“KLA develops industry-leading equipment and services that enable innovation throughout the electronics industry.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | NI National Instrumentsni.com HQ: Austin, TX, United StatesReported employees: 5,001-10,000 | Austin, TX, United States | 5,001-10,000 | Exact match | 7,353 contacts → |
“In 2023, Emerson acquired NI and introduced its new Test & Measurement business group.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Gaotek INCgaotek.com HQ: New York, NY, United StatesReported employees: Not recorded | New York, NY, United States | Not recorded | Exact match | 4,734 contacts → |
“GAO Tek is a member of GAO Group of Companies, headquartered in New York City, USA & Toronto, Canada with a strong global presence.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Tektronixtek.com HQ: Beaverton, OR, United StatesReported employees: 1,001-5,000 | Beaverton, OR, United States | 1,001-5,000 | Exact match | 3,577 contacts → |
“We design and manufacture test and measurement solutions to break through the walls of complexity and accelerate global innovation.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | UTACutacgroup.com HQ: SingaporeReported employees: 10001+ | Singapore | 10001+ | Exact match | 1,755 contacts → |
“UTAC Holdings Ltd (“UTAC”) is a leading independent provider of assembly and test services for a broad range of integrated circuits with diversified end uses, including…” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Formfactor INCformfactor.com HQ: Livermore, CA, United StatesReported employees: 1,001-5,000 | Livermore, CA, United States | 1,001-5,000 | Exact match | 1,578 contacts → |
“FormFactor is a leading provider of essential test and measurement technologies along the full IC life cycle – from characterization, modeling, reliability, and design debug, to…” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Anritsuanritsu.com HQ: Atsugi-shi, JapanReported employees: 1,001-5,000 | Atsugi-shi, Japan | 1,001-5,000 | Exact match | 1,462 contacts → |
“Since 1895 Anritsu has been leading the way as a pioneer in information communications equipment, contributing to the evolution and development of communications technologies.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Unisemunisemgroup.com HQ: Kuala Lumpur, MalaysiaReported employees: 5,001-10,000 | Kuala Lumpur, Malaysia | 5,001-10,000 | Exact match | 1,239 contacts → |
“Unisem is a global provider of semiconductor assembly and test (OSAT) services for many of the world's most successful electronics companies.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Instroninstron.com HQ: Norwood, MA, United StatesReported employees: 1,001-5,000 | Norwood, MA, United States | 1,001-5,000 | Exact match | 1,057 contacts → |
“Instron manufactures and services a wide range of cutting-edge materials testing equipment used by research scientists, design engineers, and quality control managers.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Cohu, INCcohu.com HQ: San Diego, CA, United StatesReported employees: 1,001-5,000 | San Diego, CA, United States | 1,001-5,000 | Exact match | 822 contacts → |
“Cohu is the leading supplier of semiconductor test handlers and contactors, and a growing provider of automated test equipment, inspection & metrology solutions, and data…” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Mycronicmycronic.com HQ: Täby, SwedenReported employees: 1,001-5,000 | Täby, Sweden | 1,001-5,000 | Exact match | 821 contacts → |
“Mycronic has been a trusted partner to electronics and display manufacturers worldwide for more than 50 years.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Cordon Groupcordongroup.com HQ: Dinan, FranceReported employees: 1,001-5,000 | Dinan, France | 1,001-5,000 | Exact match | 797 contacts → |
“Cordon Group was founded in 1989 by its CEO, Serge CORDON in Dinan (France) where the head office is located as well as one of its main repair centres.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | SPEAspea.com HQ: Volpiano, ItalyReported employees: 501-1,000 | Volpiano, Italy | 501-1,000 | Exact match | 777 contacts → |
“Since 1976, SPEA designs and manufactures the best automatic test equipment for Semiconductor ICs, MEMS, electronic boards and modules.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | KYECkyec.com.tw HQ: Chu-nan, ChinaReported employees: 5,001-10,000 | Chu-nan, China | 5,001-10,000 | Exact match | 739 contacts → |
“King Yuan Electronics Corp.(KYEC) provides wafer probing, final product test and assembly service for the semiconductor backend supply chain.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Transcattranscat.com HQ: Rochester, NY, United StatesReported employees: 501-1,000 | Rochester, NY, United States | 501-1,000 | Exact match | 698 contacts → |
“At Transcat, we are the global leader in test and measurement equipment and calibration services for highly technical industries, including life sciences, power generation…” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | AEMaem.com.sg HQ: SingaporeReported employees: 1,001-5,000 | Singapore | 1,001-5,000 | Exact match | 667 contacts → |
“AEM is a global leader in test innovation.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | ASE Electronics M SDN BHDasemal.com.my HQ: Bayan Lepas, MalaysiaReported employees: 1,001-5,000 | Bayan Lepas, Malaysia | 1,001-5,000 | Exact match | 592 contacts → |
“A Success Enabler ASE Electronics (M) Sdn.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | IPTEipte.com HQ: Genk, MexicoReported employees: 501-1,000 | Genk, Mexico | 501-1,000 | Exact match | 580 contacts → |
“IPTE is a worldwide leader in automation solutions for the production and testing of electronics.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Avernaaverna.com HQ: Montreal, QC, CanadaReported employees: 1,001-5,000 | Montreal, QC, Canada | 1,001-5,000 | Exact match | 558 contacts → |
“As of January 2026, Averna and Spherea joined forces to form the Spherea Group.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Keysight Technologies Malaysiakeysight.com HQ: United StatesReported employees: 1,001-5,000 | United States | 1,001-5,000 | Exact match | 548 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 | Carsem M Sdn. BHDcarsem.com HQ: United StatesReported employees: 10001+ | United States | 10001+ | Exact match | 538 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 22 | Link Engineering Companylinkeng.com HQ: Plymouth, MI, United StatesReported employees: 501-1,000 | Plymouth, MI, United States | 501-1,000 | Exact match | 520 contacts → |
“Link Group, Inc.(LINK), parent to Link Engineering Company, Link Industries and Tescor, consists of businesses that offer customized solutions, with a focus on delivering high…” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Teledyne Lecroyteledynelecroy.com HQ: Chestnut Ridge, NY, United StatesReported employees: 201-500 | Chestnut Ridge, NY, United States | 201-500 | Exact match | 491 contacts → |
“Teledyne LeCroy is a leading manufacturer of advanced oscilloscopes, protocol analyzers, and other test instruments that verify performance, validate compliance, and debug complex…” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Spherea Groupspherea.com HQ: Toulouse, FranceReported employees: 1,001-5,000 | Toulouse, France | 1,001-5,000 | Exact match | 476 contacts → |
“Spherea Group: A 60-Year Legacy Since 1965, the Spherea Group has built a strong legacy in test and quality solutions, rooted in the electronics activities of Aerospatiale, where…” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Chroma ATE INCchromaate.com HQ: Taoyuan City, TaiwanReported employees: 1,001-5,000 | Taoyuan City, Taiwan | 1,001-5,000 | Exact match | 457 contacts → |
“Founded in 1984, Chroma ATE Inc.” Recorded description excerpt · October 25, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Functional tester suppliers: dataset insights
October 25, 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
1,739 records in the displayed employee bands.
5 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 1,744 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: October 25, 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 ↗
Functional tester suppliers by location
13 lists · largest firstEvery Functional tester suppliers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Functional tester suppliers based in the United States308
- Functional tester suppliers based in India163
- Functional tester suppliers based in Germany106
- Functional tester suppliers based in the United Kingdom93
- Functional tester suppliers based in Italy72
- Functional tester suppliers based in Malaysia50
- Functional tester suppliers based in France44
- Functional tester suppliers based in Brazil43
- Functional tester suppliers based in Taiwan34
- Functional tester suppliers based in Canada33
- Functional tester suppliers based in Türkiye28
- Functional tester suppliers based in Spain26
Cities
Questions about this company list
What does Exact match mean for functional tester suppliers?
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 functional tester suppliers did RevenueBase find worldwide?
The saved snapshot records 1,744 matching company records, 87,593 tracked contacts and 21,892 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: October 25, 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
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Cite this list
RevenueBase Data Team. Top 25 functional tester suppliers worldwide. Snapshot: October 25, 2026. https://revenuebase.ai/companies/browse/functional-tester-suppliers.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗