Company lists · Data refreshed September 2026

Top 25 Managed service providers for HR worldwide

Name: Managed service providers for HR worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 30,733 companies tracked

RevenueBase identified 30,733 managed service providers for HR worldwide as of September 2026 and tracks 530,190 professional contacts across them, including 153,566 with verified work emails. The United States is the largest market and London the largest hub.

This list covers managed service providers for HR worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026. Country and city lists for managed service providers for HR follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

30,733Companies

530,190Contacts tracked

153,566Verified emails

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The 25 largest managed service providers for HR worldwide

Ranked by team size

Top 25 of 30,733 managed service providers for HR worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to managed service providers for HR: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	ADP	Indirect evidence	Roseland, NJ, United StatesHQ checked Sep 28, 2026	10001+	84,166 contacts →
	Indirect evidence “Designing better ways to work through cutting-edge products, premium services and exceptional experiences that enable people to reach their full potential.” Source: RevenueBase Database · checked Sep 28, 2026
2	Paychex	Partial evidence	Rochester, NY, United StatesHQ checked Sep 28, 2026	10001+	17,911 contacts →
	Partial evidence “As the future of work continues to evolve, Paychex leads the way by making complex HR, payroll, and benefits brilliantly simple.” Source: RevenueBase Database · checked Sep 28, 2026
3	Compucom	Indirect evidence	Fort Mill, SC, United StatesHQ checked Sep 28, 2026	5,001-10,000	7,753 contacts →
	Indirect evidence “Unleash Your Digital Workplace Potential with Compucom To be at the forefront of your industry, having the right technology is non-negotiable.” Source: RevenueBase Database · checked Sep 28, 2026
4	DEEL	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	5,001-10,000	6,510 contacts →
	Strong evidence “Deel is one platform for payroll, HR, benefits, mobility, performance, and device management across 150+ countries.” Source: RevenueBase Database · checked Sep 28, 2026
5	Adesso SE	Indirect evidence	Dortmund, GermanyHQ checked Sep 28, 2026	5,001-10,000	5,332 contacts →
	Indirect evidence “The future belongs to companies that effectively translate agentic AI into value creation.” Source: RevenueBase Database · checked Sep 28, 2026
6	Insperity	Indirect evidence	Kingwood, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	4,761 contacts →
	Indirect evidence “Since 1986, Insperity’s mission has been to help businesses succeed so communities prosper.” Source: RevenueBase Database · checked Sep 28, 2026
7	Trinet	Partial evidence	Dublin, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	4,056 contacts →
	Partial evidence “TriNet (NYSE: TNET) provides small and medium-size businesses (SMBs) with full-service HR solutions tailored by industry.” Source: RevenueBase Database · checked Sep 28, 2026
8	GUSTO	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,543 contacts →
	Indirect evidence “Gusto has been growing the small business economy for 15+ years.” Source: RevenueBase Database · checked Sep 28, 2026
9	NGA Human Resources, An Alight Company	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	2,734 contacts →
	Partial evidence “At Alight \| NGA Human Resources our mission is to make HR work better.” Source: RevenueBase Database · checked Sep 28, 2026
10	SD Worx	Partial evidence	Antwerp, BelgiumHQ checked Sep 28, 2026	5,001-10,000	2,561 contacts →
	Partial evidence “SD Worx is your HR, Pay and Time partner in Europe.” Source: RevenueBase Database · checked Sep 28, 2026
11	IT Convergence	Indirect evidence	Irving, IL, United StatesHQ checked Sep 28, 2026	501-1,000	1,950 contacts →
	Indirect evidence “IT Convergence is a global Oracle Platinum Partner with a comprehensive service offering across all three pillars of the Cloud (IaaS, PaaS, SaaS), including Consulting/Advisory…” Source: RevenueBase Database · checked Sep 28, 2026
12	GURU	Partial evidence	Rockville, MD, United StatesHQ checked Sep 28, 2026	n/a	1,906 contacts →
	Partial evidence “Established in 1995, GURU is an IT managed service provider that specializes in infrastructure support, systems integration, data architecture, data hosting, and cloud services.” Source: RevenueBase Database · checked Sep 28, 2026
13	Sopra HR Software	Partial evidence	Courbevoie, FranceHQ checked Sep 28, 2026	1,001-5,000	1,855 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
14	Ciel HR	Partial evidence	Bengaluru, IndiaHQ checked Sep 28, 2026	501-1,000	1,809 contacts →
	Partial evidence “CIEL HR is the only company in India which provides a comprehensive suite of technology-driven human resources solutions across the entire human resource chain and impacts every…” Source: RevenueBase Database · checked Sep 28, 2026
15	Eplus INC	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,749 contacts →
	Indirect evidence “ePlus is a customer-first, services-led, results-driven and trusted industry leader that helps organizations secure, modernize, optimize, and scale every aspect of their IT…” Source: RevenueBase Database · checked Sep 28, 2026
16	G-P	Partial evidence	Remote First Company, MexicoHQ checked Sep 28, 2026	1,001-5,000	1,621 contacts →
	Partial evidence “G-P is your co-pilot for global employment providing HR, legal and compliance support at your fingertips so you can build teams anywhere.” Source: RevenueBase Database · checked Sep 28, 2026
17	Activos Chile	Indirect evidence	Las Condes, ChileHQ checked Sep 28, 2026	5,001-10,000	1,504 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 28, 2026
18	Acerta	Strong evidence	BelgiumHQ checked Sep 28, 2026	1,001-5,000	1,479 contacts →
	Strong evidence “Acerta specializes in offering advice on all HR-related matters concerning Payroll, Social Security Statute, Legal advice and Talent Management.” Source: RevenueBase Database · checked Sep 28, 2026
19	Grupo Gestión	Indirect evidence	Ciudad Autónoma De Buenos Aires, ArgentinaHQ checked Sep 28, 2026	10001+	1,434 contacts →
	Indirect evidence “Desde su formación en 1997, GRUPO GESTIÓN se afianzó en el país, a través de sus diferentes Unidades de Negocio, como uno de los líderes de Compañías especializadas en la…” Source: RevenueBase Database · checked Sep 28, 2026
20	SSS	Indirect evidence	Littleton, CO, United StatesHQ checked Sep 28, 2026	n/a	1,376 contacts →
	Indirect evidence “Employee Based Systems (EBS) is a innovative HRMS software development, implementation training, support, and services company specializing in helping companies improve…” Source: RevenueBase Database · checked Sep 28, 2026
21	Liantis	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	1,001-5,000	1,348 contacts →
	Indirect evidence “Liantis ondersteunt meer dan zelfstandige ondernemers en 67.500 werkgevers in ons land.” Source: RevenueBase Database · checked Sep 28, 2026
22	Long View Systems	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 28, 2026	1,001-5,000	1,170 contacts →
	Indirect evidence “At Long View, we believe technology should empower people, strengthen organizations, and drive meaningful outcomes.” Source: RevenueBase Database · checked Sep 28, 2026
23	Solugenix	Indirect evidence	Brea, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,063 contacts →
	Indirect evidence “Technology only matters when it helps the business run better.” Source: RevenueBase Database · checked Sep 28, 2026
24	Flairstech	Partial evidence	Cairo, EgyptHQ checked Sep 28, 2026	1,001-5,000	1,039 contacts →
	Partial evidence “Since its establishment on the foundations of Innovation, Talent, and Excellence, FlairsTech has grown rapidly and steadily into the international technology-driven Managed…” Source: RevenueBase Database · checked Sep 28, 2026
25	Synoptek	Partial evidence	Costa Mesa, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,037 contacts →
	Partial evidence “Synoptek is a leading global managed services provider and technology consulting firm that delivers transformative business results.” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: managed service providers for HR. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names managed service providers for HR.
Partial evidence: Its own public description names part of managed service providers for HR, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name managed service providers for HR. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 30,733 managed service providers for HR worldwide

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Managed service providers for HR worldwide at a glance

As of Sep 28, 2026

29.0%Verified-email coverage

17.3Average contacts per company

1-10Median size (employees)

1.6%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

17,846

11-50

8,989

51-200

2,458

201-500

687

501-1,000

298

1,001-5,000

250

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among managed service providers for HR, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for managed service providers for HR are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “managed service providers for HR”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names managed service providers for HR), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among managed service providers for HR, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 153,566 across the full list. 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 28, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Managed service providers for HR by location

144 lists · largest first

Every Managed service providers for HR list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names managed service providers for HR, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many managed service providers for HR are there worldwide?

RevenueBase identified 30,733 managed service providers for HR worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

ADP, headquartered in Roseland, tops this list with the largest team on record.

Which country has the most managed service providers for HR?

The United States leads with 7,952 companies, followed by India (3,243) and the United Kingdom (2,055). Every managed service providers for HR list by country and city is linked on this page.

Which city has the most managed service providers for HR?

London leads with 500 headquartered companies, followed by Sao Paulo (279) and Mumbai (247).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 153,566 verified decision-maker contacts tracked across these 30,733 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.

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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 Smart Search, 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.