Company lists · Data refreshed September 2026
Top 25 Professional employer organizations worldwide
RevenueBase identified 12,713 company matches for professional employer organizations worldwide as of September 2026 and tracks 298,443 professional contacts across them, including 85,556 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.
This list covers company matches for professional employer organizations 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 September 20, 2026. Country and city lists for professional employer organizations 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 professional employer organizations worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 84,166 contacts → | ||||
Exact match “Designing better ways to work through cutting-edge products, premium services and exceptional experiences that enable people to reach their full potential.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 2 | 17,911 contacts → | ||||
Exact match “As the future of work continues to evolve, Paychex leads the way by making complex HR, payroll, and benefits brilliantly simple.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 3 | 4,761 contacts → | ||||
Exact match “Since 1986, Insperity’s mission has been to help businesses succeed so communities prosper.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 4 | 4,056 contacts → | ||||
Exact match “TriNet (NYSE: TNET) provides small and medium-size businesses (SMBs) with full-service HR solutions tailored by industry.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 5 | 3,543 contacts → | ||||
Exact match “Gusto has been growing the small business economy for 15+ years.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 6 | 2,734 contacts → | ||||
Exact match “At Alight | NGA Human Resources our mission is to make HR work better.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 7 | 2,561 contacts → | ||||
Exact match “SD Worx is your HR, Pay and Time partner in Europe.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 8 | 2,437 contacts → | ||||
Exact match “VensureHR is the direct employer services business unit of Vensure Employer Solutions, the largest privately held organization in the HR technology and services sector, delivering…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 9 | 2,057 contacts → | ||||
Exact match “Un software de recursos humanos para atender todas las necesidades de tus colaboradores.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 10 | 1,855 contacts → | ||||
Exact match “Sopra HR Software, leader en solutions et services pour la paie et les RH, répond aux enjeux des Directions des Ressources Humaines des organisations de moyennes et grandes…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 11 | 1,786 contacts → | ||||
Exact match “Founded in 2015 and built in Europe, Personio is the Intelligent HR Platform championing every side of HR's evolution.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 12 | 1,687 contacts → | ||||
Exact match “FESCO Adecco is a joint-venture human resources services company combining the strengths of FESCO Group (a China 500 Company and the first Chinese company in the human resources…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 13 | 1,621 contacts → | ||||
Exact match “G-P is your co-pilot for global employment providing HR, legal and compliance support at your fingertips so you can build teams anywhere.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 14 | 1,591 contacts → | ||||
Exact match “We started as a staffing company in 1972, and over the past 50 years, evolved into a Professional Employer Organization or PEO.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 15 | 1,554 contacts → | ||||
Exact match “Justworks takes the busyness out of growing a business and alleviates the unknown.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 16 | 1,504 contacts → | ||||
Exact match “Somos una empresa especializada en entregar servicios integrados en el sector de recursos humanos comprometida con los procesos y necesidades de cada uno de nuestros clientes.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 17 | 1,465 contacts → | ||||
Exact match “Zellis helps organisations unlock better outcomes by creating exceptional experiences for their people.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 18 | 1,275 contacts → | ||||
Exact match “With buzzworks, find the right people with the right skills at the right time.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 19 | 1,025 contacts → | ||||
Exact match “TASC Outsourcing is a leading people solutions partner in the GCC, working at the intersection of technology, process, and people to help organisations build agile, compliant, and…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 20 | 1,012 contacts → | ||||
Exact match “AKAL Information Systems Ltd is a leading software and business services company with over 25 years of experience, dedicated to transform Indian Human Resource landscape through…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 21 | 988 contacts → | ||||
Exact match “Simplify work life.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 22 | 874 contacts → | ||||
Exact match “At Human Quality, we are known as a leading provider of Human Resources solutions that connect top talent with companies.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 23 | 841 contacts → | ||||
Exact match “Labournet – your strategic partner in simplifying human resource management.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 24 | 840 contacts → | ||||
Exact match “Managing HR, payroll, benefits, and compliance can stretch your team thin, and mistakes are costly.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 25 | 828 contacts → | ||||
Exact match “Oasis, A Paychex Company, is a leading Professional Employer Organization (PEO).” Recorded in the RevenueBase company graph · Sep 20, 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 “professional employer organizations”. 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 12,713 professional employer organizations worldwide
See the full list, filter by size, metro and specialty, and access 85,556 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Professional employer organizations worldwide at a glance
As of Sep 20, 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 professional employer organizations are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “professional employer organizations” 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 85,556 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 20, 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.
Professional employer organizations by location
57 lists · largest firstEvery Professional employer organizations list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Professional employer organizations based in the United States3,309
- Professional employer organizations based in India1,303
- Professional employer organizations based in France647
- Professional employer organizations based in the United Kingdom621
- Professional employer organizations based in Brazil470
- Professional employer organizations based in the Netherlands317
- Professional employer organizations based in South Africa300
- Professional employer organizations based in Canada277
- Professional employer organizations based in Italy247
- Professional employer organizations based in Australia246
- Professional employer organizations based in Mexico223
- Professional employer organizations based in Germany120
- Professional employer organizations based in Nigeria111
- Professional employer organizations based in Egypt109
- Professional employer organizations based in Poland103
- Professional employer organizations based in Argentina100
- Professional employer organizations based in the United Arab Emirates100
- Professional employer organizations based in Colombia99
- Professional employer organizations based in Belgium97
- Professional employer organizations based in Chile97
- Professional employer organizations based in Indonesia93
- Professional employer organizations based in Switzerland82
- Professional employer organizations based in Spain72
- Professional employer organizations based in the Philippines72
- Professional employer organizations based in Malaysia68
- Professional employer organizations based in Singapore65
- Professional employer organizations based in Sweden59
- Professional employer organizations based in Türkiye58
- Professional employer organizations based in Romania54
- Professional employer organizations based in Ireland46
- Professional employer organizations based in Saudi Arabia36
- Professional employer organizations based in Denmark34
- Professional employer organizations based in New Zealand29
Cities
- Professional employer organizations based in Sao Paulo, Brazil128
- Professional employer organizations based in Bangalore, India126
- Professional employer organizations based in Mumbai, India116
- Professional employer organizations based in New Delhi, India91
- Professional employer organizations based in Chennai, India86
- Professional employer organizations based in Noida, India79
- Professional employer organizations based in New York, United States61
- Professional employer organizations based in Pune, India60
- Professional employer organizations based in Houston, United States59
- Professional employer organizations based in Johannesburg, South Africa57
- Professional employer organizations based in Ahmedabad, India53
- Professional employer organizations based in Atlanta, United States48
- Professional employer organizations based in Gurgaon, India48
- Professional employer organizations based in Tampa, United States43
- Professional employer organizations based in Miami, United States39
- Professional employer organizations based in Los Angeles, United States37
- Professional employer organizations based in Denver, United States36
- Professional employer organizations based in San Diego, United States35
- Professional employer organizations based in Phoenix, United States32
- Professional employer organizations based in San Antonio, United States32
- Professional employer organizations based in Pretoria, South Africa30
- Professional employer organizations based in Chicago, United States29
- Professional employer organizations based in Dallas, United States26
- Professional employer organizations based in Orlando, United States25
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 “professional employer organizations”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many professional employer organizations are there worldwide?
RevenueBase identified 12,713 company matches for professional employer organizations worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
ADP tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most professional employer organizations?
The United States leads with 3,309 companies, followed by India (1,303) and France (647). Every professional employer organizations list by country and city is linked on this page.
Which city has the most professional employer organizations?
Sao Paulo leads with 128 company records, followed by Mumbai (116) and London (111).
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 85,556 professional contacts with verified work emails tracked across these 12,713 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 12,713 professional employer organizations 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 professional employer organizations worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 12,713 matching company records for professional employer organizations worldwide, with 298,443 tracked contacts and 85,556 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 20, 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 professional employer organizations 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 |  ADPadp.comHQ: Roseland, NJ, United StatesReported employees: 10001+ | Roseland, NJ, United States | 10001+ | Exact match | 84,166 contacts → |
“Designing better ways to work through cutting-edge products, premium services and exceptional experiences that enable people to reach their full potential.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Paychexpaychex.comHQ: Rochester, NY, United StatesReported employees: 10001+ | Rochester, NY, United States | 10001+ | Exact match | 17,911 contacts → |
“As the future of work continues to evolve, Paychex leads the way by making complex HR, payroll, and benefits brilliantly simple.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Insperityinsperity.comHQ: Kingwood, TX, United StatesReported employees: 1,001-5,000 | Kingwood, TX, United States | 1,001-5,000 | Exact match | 4,761 contacts → |
“Since 1986, Insperity’s mission has been to help businesses succeed so communities prosper.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Trinettrinet.comHQ: Dublin, CA, United StatesReported employees: 1,001-5,000 | Dublin, CA, United States | 1,001-5,000 | Exact match | 4,056 contacts → |
“TriNet (NYSE: TNET) provides small and medium-size businesses (SMBs) with full-service HR solutions tailored by industry.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  GUSTOgusto.comHQ: San Francisco, CA, United StatesReported employees: 1,001-5,000 | San Francisco, CA, United States | 1,001-5,000 | Exact match | 3,543 contacts → |
“Gusto has been growing the small business economy for 15+ years.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 2,734 contacts → |
“At Alight | NGA Human Resources our mission is to make HR work better.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  SD Worxsdworx.comHQ: Antwerp, BelgiumReported employees: 5,001-10,000 | Antwerp, Belgium | 5,001-10,000 | Exact match | 2,561 contacts → |
“SD Worx is your HR, Pay and Time partner in Europe.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Vensure Employer Solutionsvensure.comHQ: Chandler, AZ, United StatesReported employees: 1,001-5,000 | Chandler, AZ, United States | 1,001-5,000 | Exact match | 2,437 contacts → |
“VensureHR is the direct employer services business unit of Vensure Employer Solutions, the largest privately held organization in the HR technology and services sector, delivering…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  BUKbuk.clHQ: Miguel Hidalgo, MexicoReported employees: 1,001-5,000 | Miguel Hidalgo, Mexico | 1,001-5,000 | Exact match | 2,057 contacts → |
“Un software de recursos humanos para atender todas las necesidades de tus colaboradores.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Sopra HR Softwaresoprahr.comHQ: Courbevoie, FranceReported employees: 1,001-5,000 | Courbevoie, France | 1,001-5,000 | Exact match | 1,855 contacts → |
“Sopra HR Software, leader en solutions et services pour la paie et les RH, répond aux enjeux des Directions des Ressources Humaines des organisations de moyennes et grandes…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Personiopersonio.comHQ: Munich, GermanyReported employees: 1,001-5,000 | Munich, Germany | 1,001-5,000 | Exact match | 1,786 contacts → |
“Founded in 2015 and built in Europe, Personio is the Intelligent HR Platform championing every side of HR's evolution.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Fesco Adecco (外企德科)fescoadecco.comHQ: 上海, ChinaReported employees: 1,001-5,000 | 上海, China | 1,001-5,000 | Exact match | 1,687 contacts → |
“FESCO Adecco is a joint-venture human resources services company combining the strengths of FESCO Group (a China 500 Company and the first Chinese company in the human resources…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  G-Pg-p.comHQ: Remote First Company, MexicoReported employees: 1,001-5,000 | Remote First Company, Mexico | 1,001-5,000 | Exact match | 1,621 contacts → |
“G-P is your co-pilot for global employment providing HR, legal and compliance support at your fingertips so you can build teams anywhere.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  BBSIbbsi.comHQ: Vancouver, WA, United StatesReported employees: 501-1,000 | Vancouver, WA, United States | 501-1,000 | Exact match | 1,591 contacts → |
“We started as a staffing company in 1972, and over the past 50 years, evolved into a Professional Employer Organization or PEO.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Justworksjustworks.comHQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 1,554 contacts → |
“Justworks takes the busyness out of growing a business and alleviates the unknown.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Activos Chileactivoschile.clHQ: Las Condes, ChileReported employees: 5,001-10,000 | Las Condes, Chile | 5,001-10,000 | Exact match | 1,504 contacts → |
“Somos una empresa especializada en entregar servicios integrados en el sector de recursos humanos comprometida con los procesos y necesidades de cada uno de nuestros clientes.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Zelliszellis.comHQ: Bristol, United KingdomReported employees: 1,001-5,000 | Bristol, United Kingdom | 1,001-5,000 | Exact match | 1,465 contacts → |
“Zellis helps organisations unlock better outcomes by creating exceptional experiences for their people.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Buzzworks Business Services Pvt. LTDbuzzworks.comHQ: Chennai, IndiaReported employees: 10001+ | Chennai, India | 10001+ | Exact match | 1,275 contacts → |
“With buzzworks, find the right people with the right skills at the right time.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Tasc Outsourcingtascoutsourcing.comHQ: Dubai, United Arab EmiratesReported employees: 10001+ | Dubai, United Arab Emirates | 10001+ | Exact match | 1,025 contacts → |
“TASC Outsourcing is a leading people solutions partner in the GCC, working at the intersection of technology, process, and people to help organisations build agile, compliant, and…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Akal Information Systems LTDakalinfo.comHQ: New Delhi, IndiaReported employees: 1,001-5,000 | New Delhi, India | 1,001-5,000 | Exact match | 1,012 contacts → |
“AKAL Information Systems Ltd is a leading software and business services company with over 25 years of experience, dedicated to transform Indian Human Resource landscape through…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Zalariszalaris.comHQ: Oslo, NorwayReported employees: 1,001-5,000 | Oslo, Norway | 1,001-5,000 | Exact match | 988 contacts → |
“Simplify work life.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Human Qualityhumanquality.com.mxHQ: Monterrey, MexicoReported employees: 1,001-5,000 | Monterrey, Mexico | 1,001-5,000 | Exact match | 874 contacts → |
“At Human Quality, we are known as a leading provider of Human Resources solutions that connect top talent with companies.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Labournetlabournet.comHQ: Johannesburg, South AfricaReported employees: 201-500 | Johannesburg, South Africa | 201-500 | Exact match | 841 contacts → |
“Labournet – your strategic partner in simplifying human resource management.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  G&a Partnersgnapartners.comHQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 840 contacts → |
“Managing HR, payroll, benefits, and compliance can stretch your team thin, and mistakes are costly.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  OASISoasisadvantage.comHQ: West Palm Beach, FL, United StatesReported employees: 501-1,000 | West Palm Beach, FL, United States | 501-1,000 | Exact match | 828 contacts → |
“Oasis, A Paychex Company, is a leading Professional Employer Organization (PEO).” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 12,713 company matches
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Professional employer organizations: dataset insights
September 20, 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
12,689 records in the displayed employee bands.
24 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 12,713 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 20, 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 ↗
Professional employer organizations by location
57 lists · largest firstEvery Professional employer organizations list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Professional employer organizations based in the United States3,309
- Professional employer organizations based in India1,303
- Professional employer organizations based in France647
- Professional employer organizations based in the United Kingdom621
- Professional employer organizations based in Brazil470
- Professional employer organizations based in the Netherlands317
- Professional employer organizations based in South Africa300
- Professional employer organizations based in Canada277
- Professional employer organizations based in Italy247
- Professional employer organizations based in Australia246
- Professional employer organizations based in Mexico223
- Professional employer organizations based in Germany120
- Professional employer organizations based in Nigeria111
- Professional employer organizations based in Egypt109
- Professional employer organizations based in Poland103
- Professional employer organizations based in Argentina100
- Professional employer organizations based in the United Arab Emirates100
- Professional employer organizations based in Colombia99
- Professional employer organizations based in Belgium97
- Professional employer organizations based in Chile97
- Professional employer organizations based in Indonesia93
- Professional employer organizations based in Switzerland82
- Professional employer organizations based in Spain72
- Professional employer organizations based in the Philippines72
- Professional employer organizations based in Malaysia68
- Professional employer organizations based in Singapore65
- Professional employer organizations based in Sweden59
- Professional employer organizations based in Türkiye58
- Professional employer organizations based in Romania54
- Professional employer organizations based in Ireland46
- Professional employer organizations based in Saudi Arabia36
- Professional employer organizations based in Denmark34
- Professional employer organizations based in New Zealand29
Cities
- Professional employer organizations based in Sao Paulo, Brazil128
- Professional employer organizations based in Bangalore, India126
- Professional employer organizations based in Mumbai, India116
- Professional employer organizations based in New Delhi, India91
- Professional employer organizations based in Chennai, India86
- Professional employer organizations based in Noida, India79
- Professional employer organizations based in New York, United States61
- Professional employer organizations based in Pune, India60
- Professional employer organizations based in Houston, United States59
- Professional employer organizations based in Johannesburg, South Africa57
- Professional employer organizations based in Ahmedabad, India53
- Professional employer organizations based in Atlanta, United States48
- Professional employer organizations based in Gurgaon, India48
- Professional employer organizations based in Tampa, United States43
- Professional employer organizations based in Miami, United States39
- Professional employer organizations based in Los Angeles, United States37
- Professional employer organizations based in Denver, United States36
- Professional employer organizations based in San Diego, United States35
- Professional employer organizations based in Phoenix, United States32
- Professional employer organizations based in San Antonio, United States32
- Professional employer organizations based in Pretoria, South Africa30
- Professional employer organizations based in Chicago, United States29
- Professional employer organizations based in Dallas, United States26
- Professional employer organizations based in Orlando, United States25
Questions about this company list
What does Exact match mean for professional employer organizations?
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 professional employer organizations did RevenueBase find worldwide?
The saved snapshot records 12,713 matching company records, 298,443 tracked contacts and 85,556 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 professional employer organizations worldwide. Snapshot: September 20, 2026. https://revenuebase.ai/companies/browse/professional-employer-organizations.
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 professional employer organizations worldwide
RevenueBase records 12,713 matching company records for professional employer organizations worldwide, with 298,443 tracked contacts and 85,556 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 20, 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 professional employer organizations 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 | ADPadp.com HQ: Roseland, NJ, United StatesReported employees: 10001+ | Roseland, NJ, United States | 10001+ | Exact match | 84,166 contacts → |
“Designing better ways to work through cutting-edge products, premium services and exceptional experiences that enable people to reach their full potential.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Paychexpaychex.com HQ: Rochester, NY, United StatesReported employees: 10001+ | Rochester, NY, United States | 10001+ | Exact match | 17,911 contacts → |
“As the future of work continues to evolve, Paychex leads the way by making complex HR, payroll, and benefits brilliantly simple.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Insperityinsperity.com HQ: Kingwood, TX, United StatesReported employees: 1,001-5,000 | Kingwood, TX, United States | 1,001-5,000 | Exact match | 4,761 contacts → |
“Since 1986, Insperity’s mission has been to help businesses succeed so communities prosper.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Trinettrinet.com HQ: Dublin, CA, United StatesReported employees: 1,001-5,000 | Dublin, CA, United States | 1,001-5,000 | Exact match | 4,056 contacts → |
“TriNet (NYSE: TNET) provides small and medium-size businesses (SMBs) with full-service HR solutions tailored by industry.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | GUSTOgusto.com HQ: San Francisco, CA, United StatesReported employees: 1,001-5,000 | San Francisco, CA, United States | 1,001-5,000 | Exact match | 3,543 contacts → |
“Gusto has been growing the small business economy for 15+ years.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 2,734 contacts → |
“At Alight | NGA Human Resources our mission is to make HR work better.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | SD Worxsdworx.com HQ: Antwerp, BelgiumReported employees: 5,001-10,000 | Antwerp, Belgium | 5,001-10,000 | Exact match | 2,561 contacts → |
“SD Worx is your HR, Pay and Time partner in Europe.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Vensure Employer Solutionsvensure.com HQ: Chandler, AZ, United StatesReported employees: 1,001-5,000 | Chandler, AZ, United States | 1,001-5,000 | Exact match | 2,437 contacts → |
“VensureHR is the direct employer services business unit of Vensure Employer Solutions, the largest privately held organization in the HR technology and services sector, delivering…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | BUKbuk.cl HQ: Miguel Hidalgo, MexicoReported employees: 1,001-5,000 | Miguel Hidalgo, Mexico | 1,001-5,000 | Exact match | 2,057 contacts → |
“Un software de recursos humanos para atender todas las necesidades de tus colaboradores.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Sopra HR Softwaresoprahr.com HQ: Courbevoie, FranceReported employees: 1,001-5,000 | Courbevoie, France | 1,001-5,000 | Exact match | 1,855 contacts → |
“Sopra HR Software, leader en solutions et services pour la paie et les RH, répond aux enjeux des Directions des Ressources Humaines des organisations de moyennes et grandes…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Personiopersonio.com HQ: Munich, GermanyReported employees: 1,001-5,000 | Munich, Germany | 1,001-5,000 | Exact match | 1,786 contacts → |
“Founded in 2015 and built in Europe, Personio is the Intelligent HR Platform championing every side of HR's evolution.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Fesco Adecco (外企德科)fescoadecco.com HQ: 上海, ChinaReported employees: 1,001-5,000 | 上海, China | 1,001-5,000 | Exact match | 1,687 contacts → |
“FESCO Adecco is a joint-venture human resources services company combining the strengths of FESCO Group (a China 500 Company and the first Chinese company in the human resources…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | G-Pg-p.com HQ: Remote First Company, MexicoReported employees: 1,001-5,000 | Remote First Company, Mexico | 1,001-5,000 | Exact match | 1,621 contacts → |
“G-P is your co-pilot for global employment providing HR, legal and compliance support at your fingertips so you can build teams anywhere.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | BBSIbbsi.com HQ: Vancouver, WA, United StatesReported employees: 501-1,000 | Vancouver, WA, United States | 501-1,000 | Exact match | 1,591 contacts → |
“We started as a staffing company in 1972, and over the past 50 years, evolved into a Professional Employer Organization or PEO.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Justworksjustworks.com HQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 1,554 contacts → |
“Justworks takes the busyness out of growing a business and alleviates the unknown.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Activos Chileactivoschile.cl HQ: Las Condes, ChileReported employees: 5,001-10,000 | Las Condes, Chile | 5,001-10,000 | Exact match | 1,504 contacts → |
“Somos una empresa especializada en entregar servicios integrados en el sector de recursos humanos comprometida con los procesos y necesidades de cada uno de nuestros clientes.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Zelliszellis.com HQ: Bristol, United KingdomReported employees: 1,001-5,000 | Bristol, United Kingdom | 1,001-5,000 | Exact match | 1,465 contacts → |
“Zellis helps organisations unlock better outcomes by creating exceptional experiences for their people.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Buzzworks Business Services Pvt. LTDbuzzworks.com HQ: Chennai, IndiaReported employees: 10001+ | Chennai, India | 10001+ | Exact match | 1,275 contacts → |
“With buzzworks, find the right people with the right skills at the right time.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Tasc Outsourcingtascoutsourcing.com HQ: Dubai, United Arab EmiratesReported employees: 10001+ | Dubai, United Arab Emirates | 10001+ | Exact match | 1,025 contacts → |
“TASC Outsourcing is a leading people solutions partner in the GCC, working at the intersection of technology, process, and people to help organisations build agile, compliant, and…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Akal Information Systems LTDakalinfo.com HQ: New Delhi, IndiaReported employees: 1,001-5,000 | New Delhi, India | 1,001-5,000 | Exact match | 1,012 contacts → |
“AKAL Information Systems Ltd is a leading software and business services company with over 25 years of experience, dedicated to transform Indian Human Resource landscape through…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Zalariszalaris.com HQ: Oslo, NorwayReported employees: 1,001-5,000 | Oslo, Norway | 1,001-5,000 | Exact match | 988 contacts → |
“Simplify work life.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Human Qualityhumanquality.com.mx HQ: Monterrey, MexicoReported employees: 1,001-5,000 | Monterrey, Mexico | 1,001-5,000 | Exact match | 874 contacts → |
“At Human Quality, we are known as a leading provider of Human Resources solutions that connect top talent with companies.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Labournetlabournet.com HQ: Johannesburg, South AfricaReported employees: 201-500 | Johannesburg, South Africa | 201-500 | Exact match | 841 contacts → |
“Labournet – your strategic partner in simplifying human resource management.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | G&a Partnersgnapartners.com HQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 840 contacts → |
“Managing HR, payroll, benefits, and compliance can stretch your team thin, and mistakes are costly.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | OASISoasisadvantage.com HQ: West Palm Beach, FL, United StatesReported employees: 501-1,000 | West Palm Beach, FL, United States | 501-1,000 | Exact match | 828 contacts → |
“Oasis, A Paychex Company, is a leading Professional Employer Organization (PEO).” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 12,713 company matches
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Professional employer organizations: dataset insights
September 20, 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
12,689 records in the displayed employee bands.
24 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 12,713 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 20, 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 ↗
Professional employer organizations by location
57 lists · largest firstEvery Professional employer organizations list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Professional employer organizations based in the United States3,309
- Professional employer organizations based in India1,303
- Professional employer organizations based in France647
- Professional employer organizations based in the United Kingdom621
- Professional employer organizations based in Brazil470
- Professional employer organizations based in the Netherlands317
- Professional employer organizations based in South Africa300
- Professional employer organizations based in Canada277
- Professional employer organizations based in Italy247
- Professional employer organizations based in Australia246
- Professional employer organizations based in Mexico223
- Professional employer organizations based in Germany120
- Professional employer organizations based in Nigeria111
- Professional employer organizations based in Egypt109
- Professional employer organizations based in Poland103
- Professional employer organizations based in Argentina100
- Professional employer organizations based in the United Arab Emirates100
- Professional employer organizations based in Colombia99
- Professional employer organizations based in Belgium97
- Professional employer organizations based in Chile97
- Professional employer organizations based in Indonesia93
- Professional employer organizations based in Switzerland82
- Professional employer organizations based in Spain72
- Professional employer organizations based in the Philippines72
- Professional employer organizations based in Malaysia68
- Professional employer organizations based in Singapore65
- Professional employer organizations based in Sweden59
- Professional employer organizations based in Türkiye58
- Professional employer organizations based in Romania54
- Professional employer organizations based in Ireland46
- Professional employer organizations based in Saudi Arabia36
- Professional employer organizations based in Denmark34
- Professional employer organizations based in New Zealand29
Cities
- Professional employer organizations based in Sao Paulo, Brazil128
- Professional employer organizations based in Bangalore, India126
- Professional employer organizations based in Mumbai, India116
- Professional employer organizations based in New Delhi, India91
- Professional employer organizations based in Chennai, India86
- Professional employer organizations based in Noida, India79
- Professional employer organizations based in New York, United States61
- Professional employer organizations based in Pune, India60
- Professional employer organizations based in Houston, United States59
- Professional employer organizations based in Johannesburg, South Africa57
- Professional employer organizations based in Ahmedabad, India53
- Professional employer organizations based in Atlanta, United States48
- Professional employer organizations based in Gurgaon, India48
- Professional employer organizations based in Tampa, United States43
- Professional employer organizations based in Miami, United States39
- Professional employer organizations based in Los Angeles, United States37
- Professional employer organizations based in Denver, United States36
- Professional employer organizations based in San Diego, United States35
- Professional employer organizations based in Phoenix, United States32
- Professional employer organizations based in San Antonio, United States32
- Professional employer organizations based in Pretoria, South Africa30
- Professional employer organizations based in Chicago, United States29
- Professional employer organizations based in Dallas, United States26
- Professional employer organizations based in Orlando, United States25
Questions about this company list
What does Exact match mean for professional employer organizations?
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 professional employer organizations did RevenueBase find worldwide?
The saved snapshot records 12,713 matching company records, 298,443 tracked contacts and 85,556 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 professional employer organizations worldwide. Snapshot: September 20, 2026. https://revenuebase.ai/companies/browse/professional-employer-organizations.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗