Company lists · Data refreshed September 2026

Top 25 HR software professional services based in the United States

Name: HR software professional services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 26, 2026 6,520 companies tracked

RevenueBase identified 6,520 company matches for HR software professional services associated with the United States as of September 2026 and tracks 297,476 professional contacts across them, including 110,434 with verified work emails and 91,965 with mobile numbers. New York is the largest hub.

This list covers company matches for HR software professional services associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 26, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 26, 2026 How this list was built

6,520Companies

297,476Contacts tracked

110,434Verified emails

91,965Mobile numbers

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The 25 largest HR software professional services based in the United States

Ranked by team size

Top 25 of 6,520 company matches for HR software professional services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 26, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	ADP	Exact match	Roseland, NJ, United StatesHQ recorded Sep 26, 2026	10001+	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 26, 2026 · View company records in RevenueBase
2	Workday	Exact match	Pleasanton, CA, United StatesHQ recorded Sep 26, 2026	10001+	20,846 contacts →
	Exact match “By unifying HR and Finance on an open, trusted platform powered by AI, Workday delivers high-impact outcomes our customers can count on.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
3	Paychex	Exact match	Rochester, NY, United StatesHQ recorded Sep 26, 2026	10001+	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 26, 2026 · View company records in RevenueBase
4	LHH	Exact match	Jacksonville, FL, United StatesHQ recorded Sep 26, 2026	10001+	12,889 contacts →
	Exact match “At LHH, we believe work should be meaningful, fulfilling, and connected.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
5	Randstad USA	Exact match	Atlanta, GA, United StatesHQ recorded Sep 26, 2026	1,001-5,000	8,522 contacts →
	Exact match “Randstad North America, Inc.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
6	Paycom	Exact match	Oklahoma City, OK, United StatesHQ recorded Sep 26, 2026	5,001-10,000	7,002 contacts →
	Exact match “Paycom (NYSE:PAYC) automates the entire employee life cycle in a truly single HR and payroll software.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
7	DEEL	Exact match	San Francisco, CA, United StatesHQ recorded Sep 26, 2026	5,001-10,000	6,510 contacts →
	Exact match “Deel is one platform for payroll, HR, benefits, mobility, performance, and device management across 150+ countries.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
8	Rippling	Exact match	San Francisco, CA, United StatesHQ recorded Sep 26, 2026	1,001-5,000	6,303 contacts →
	Exact match “Rippling is a workforce management system that eliminates the friction from running a business.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
9	Paylocity	Exact match	Schaumburg, IL, United StatesHQ recorded Sep 26, 2026	5,001-10,000	6,153 contacts →
	Exact match “Paylocity (NASDAQ: PCTY) is an award-winning provider of cloud-based HR, payroll and spend management software solutions.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
10	Dayforce	Exact match	Minneapolis, MN, United StatesHQ recorded Sep 26, 2026	5,001-10,000	5,902 contacts →
	Exact match “Dayforce is as a global leader in HCM technology focused on improving work for thousands of customers and millions of employees around the world.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
11	Strada	Exact match	The Woodlands, TX, United StatesHQ recorded Sep 26, 2026	5,001-10,000	5,585 contacts →
	Exact match “With over 30 years as a global people, payroll, and technology leader, Strada specializes in removing complexity to simplify workforce management.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
12	Insperity	Exact match	Kingwood, TX, United StatesHQ recorded Sep 26, 2026	1,001-5,000	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 26, 2026 · View company records in RevenueBase
13	Trinet	Exact match	Dublin, CA, United StatesHQ recorded Sep 26, 2026	1,001-5,000	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 26, 2026 · View company records in RevenueBase
14	GUSTO	Exact match	San Francisco, CA, United StatesHQ recorded Sep 26, 2026	1,001-5,000	3,543 contacts →
	Exact match “Gusto has been growing the small business economy for 15+ years.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
15	Allegis Global Solutions	Exact match	Hanover, MD, United StatesHQ recorded Sep 26, 2026	1,001-5,000	2,866 contacts →
	Exact match “At Allegis Global Solutions (AGS), we’re in the human enterprise business.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
16	Paycor	Exact match	Cincinnati, OH, United StatesHQ recorded Sep 26, 2026	1,001-5,000	2,615 contacts →
	Exact match “Paycor’s HR, payroll, and talent platform connects leaders to people, data, and expertise.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
17	SAP Successfactors	Exact match	South San Francisco, CA, United StatesHQ recorded Sep 26, 2026	1,001-5,000	1,948 contacts →
	Exact match “SAP SuccessFactors is SAP’s cloud human capital management (HCM) suite built for Autonomous HCM-powered by AI and guided by people.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
18	Remedy Intelligent Staffing	Exact match	Atlanta, GA, United StatesHQ recorded Sep 26, 2026	10001+	1,948 contacts →
	Exact match “Remedy Intelligent Staffing is a nationwide professional staffing organization with more than 50 years of recruiting and selection expertise to match job candidates with positions…” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
19	Kronos Incorporated	Exact match	Lowell, MA, United StatesHQ recorded Sep 26, 2026	5,001-10,000	1,889 contacts →
	Exact match “Built from the merger of Ultimate Software & Kronos Inc, we are now UKG.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
20	Bamboohr	Exact match	Draper, UT, United StatesHQ recorded Sep 26, 2026	1,001-5,000	1,812 contacts →
	Exact match “For 16 years, BambooHR has embarked on a mission to help organizations and their employees build better workplaces and achieve their unique missions.” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
21	HIBOB	Exact match	New York, NY, United StatesHQ recorded Sep 26, 2026	1,001-5,000	1,669 contacts →
	Exact match “HiBob is on a mission to transform how organizations operate in the modern world of work with its HR platform,"Bob." Leading the way for the future workplace, Bob offers…” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
22	Isolved	Exact match	Charlotte, NC, United StatesHQ recorded Sep 26, 2026	1,001-5,000	1,657 contacts →
	Exact match “isolved® isolved is a Workforce Capital Management company, the next evolution of HCM, where human workers and AI agents are governed together on a single system of record, with…” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
23	Avature	Exact match	New York, NY, United StatesHQ recorded Sep 26, 2026	1,001-5,000	1,535 contacts →
	Exact match “Pioneer of CRM technology for recruiting, Avature is a highly configurable enterprise SaaS platform for talent acquisition and talent management that drives innovation in the HCM…” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
24	Darwinbox	Exact match	San Mateo, CA, United StatesHQ recorded Sep 26, 2026	1,001-5,000	1,504 contacts →
	Exact match “Darwinbox is a new-age, agile HCM Suite that enables enterprises and growing businesses to automate their day-to-day HR processes, deliver actionable insights and build better…” Recorded in the RevenueBase company graph · Sep 26, 2026 · View company records in RevenueBase
25	SSS	Exact match	Littleton, CO, United StatesHQ recorded Sep 26, 2026	n/a	1,376 contacts →
	Exact match “Employee Based Systems (EBS) is a innovative HRMS software development, implementation training, support, and services company specializing in helping companies improve…” Recorded in the RevenueBase company graph · Sep 26, 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 “HR software professional services”. 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 6,520 HR software professional services based in the United States

See the full list, filter by size, metro and specialty, and access 110,434 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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HR software professional services based in the United States at a glance

As of Sep 26, 2026

37.1%Verified-email coverage

30.9%Mobile-number coverage

45.6Average contacts per company

1-10Median size (employees)

3.8%Largest-city concentration · New York

Sep 26, 2026Page data refreshed

Companies by employee count

1-10

4,542

11-50

1,251

51-200

440

201-500

119

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 28.0d

72,2230–30

34,00031–60

2,72661–90

16790–180

1,318180+

Company record updated

Median 88.0d

00–30

71,83531–60

116,72461–90

88,83490–180

20,083180+

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United States whose business descriptions match “HR software professional services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 110,434 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 26, 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.

HR software professional services by metro

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 “HR software professional services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many HR software professional services are there based in the United States?

RevenueBase identified 6,520 company matches for HR software professional services associated with the United States 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 city has the most HR software professional services?

New York leads with 246 company records, followed by Atlanta (175) and Houston (114).

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 110,434 professional contacts with verified work emails tracked across these 6,520 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 26, 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 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.