Company lists · Data refreshed October 2026

Top 25 Core administrative processing systems software companies worldwide

Name: Core administrative processing systems software companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 1, 2026 5,102 companies tracked

RevenueBase identified 5,102 company matches for core administrative processing systems software companies worldwide as of October 2026 and tracks 286,300 professional contacts across them, including 88,238 with verified work emails. India is the largest market and Sao Paulo the largest hub.

This list covers company matches for core administrative processing systems software companies worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 1, 2026. Country and city lists for core administrative processing systems software companies 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 1, 2026 How this list was built

5,102Companies

286,300Contacts tracked

88,238Verified emails

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The 25 largest core administrative processing systems software companies worldwide

Ranked by team size

Top 25 of 5,102 company matches for core administrative processing systems software companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 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 Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
2	Paychex	Exact match	Rochester, NY, United StatesHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
3	TOTVS	Exact match	Sao Paulo, BrazilHQ recorded Oct 1, 2026	10001+	14,741 contacts →
	Exact match “Olá, somos a TOTVS!” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4	SAGE	Exact match	Newcastle Upon Tyne, United KingdomHQ recorded Oct 1, 2026	10001+	13,063 contacts →
	Exact match “At Sage, we knock down barriers with information, insights, and tools to help your business flow.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5	Paycom	Exact match	Oklahoma City, OK, United StatesHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
6	Paylocity	Exact match	Schaumburg, IL, United StatesHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
7	Strada	Exact match	The Woodlands, TX, United StatesHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
8	Ramco Systems	Exact match	Chennai, IndiaHQ recorded Oct 1, 2026	1,001-5,000	3,791 contacts →
	Exact match “Ramco is a next-gen enterprise software product & platform provider disrupting the market with its multi-tenant cloud and mobile-based enterprise solutions in Global Payroll, ERP…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9	Zucchetti	Exact match	Lodi, ItalyHQ recorded Oct 1, 2026	5,001-10,000	2,982 contacts →
	Exact match “Zucchetti is the leading Italian software publisher group in Europe (source: IDC).” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10	NGA Human Resources, An Alight Company	Exact match	London, United KingdomHQ recorded Oct 1, 2026	1,001-5,000	2,734 contacts →
	Exact match “At Alight \| NGA Human Resources our mission is to make HR work better.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11	Fast Enterprises, LLC	Exact match	Centennial, CO, United StatesHQ recorded Oct 1, 2026	1,001-5,000	2,363 contacts →
	Exact match “For 25+ years, we’ve transformed the way government agencies serve their communities, providing software that delivers superior customer experiences, greater flexibility, and…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12	SIIGO	Exact match	Bogotá D.c., ColombiaHQ recorded Oct 1, 2026	1,001-5,000	2,288 contacts →
	Exact match “Siigo S.A.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13	Oneadvanced	Exact match	Birmingham, United KingdomHQ recorded Oct 1, 2026	1,001-5,000	2,242 contacts →
	Exact match “Founded in 2008 OneAdvanced has grown into one of the UK’s largest providers of business software and services serving global customers with an annual turnover of £330M+.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14	Iris Software Group	Exact match	Slough, United KingdomHQ recorded Oct 1, 2026	1,001-5,000	2,218 contacts →
	Exact match “IRIS Software Group is a leading business software and services provider, one of the UK’s largest privately held software companies.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15	Contour Software	Exact match	Karachi, PakistanHQ recorded Oct 1, 2026	1,001-5,000	2,109 contacts →
	Exact match “Contour Software is a wholly owned subsidiary of Constellation Software CSI acquires, manages, and builds market-leading vertical market software (“VMS”) businesses that develop…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16	BUK	Exact match	Miguel Hidalgo, MexicoHQ recorded Oct 1, 2026	1,001-5,000	2,057 contacts →
	Exact match “Un software de recursos humanos para atender todas las necesidades de tus colaboradores.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17	Yonyou Network Technology	Exact match	Beijing, ChinaHQ recorded Oct 1, 2026	5,001-10,000	2,016 contacts →
	Exact match “Founded in 1988, Yonyou Software Co, Ltd.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18	Kronos Incorporated	Exact match	Lowell, MA, United StatesHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
19	Sopra HR Software	Exact match	Courbevoie, FranceHQ recorded Oct 1, 2026	1,001-5,000	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 · Oct 1, 2026 · View company records in RevenueBase
20	Personio	Exact match	Munich, GermanyHQ recorded Oct 1, 2026	1,001-5,000	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 · Oct 1, 2026 · View company records in RevenueBase
21	Logo Yazılım	Exact match	Kocaeli, TürkiyeHQ recorded Oct 1, 2026	1,001-5,000	1,570 contacts →
	Exact match “Türkiye’nin en büyük yerli iş yazılımı şirketi Logo Yazılım, kurulduğu 1984 yılından bu yana sektörün öncü şirketlerinden biri olarak faaliyetlerini sürdürüyor.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22	Zellis	Exact match	Bristol, United KingdomHQ recorded Oct 1, 2026	1,001-5,000	1,465 contacts →
	Exact match “Zellis helps organisations unlock better outcomes by creating exceptional experiences for their people.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
23	Epi-Use	Exact match	SingaporeHQ recorded Oct 1, 2026	1,001-5,000	1,385 contacts →
	Exact match “EPI-USE is a member of groupelephant.com, a largely employee-owned group of boutique services firms and software companies, nonprofits and impact investment organizations, with a…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
24	SSS	Exact match	Littleton, CO, United StatesHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
25	Ultimate Software	Exact match	Weston, FL, United StatesHQ recorded Oct 1, 2026	5,001-10,000	1,084 contacts →
	Exact match “Built from the merger of Ultimate Software & Kronos Inc, we are now UKG.” Recorded in the RevenueBase company graph · Oct 1, 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 “core administrative processing systems software companies”. 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 5,102 core administrative processing systems software companies worldwide

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Core administrative processing systems software companies worldwide at a glance

As of Oct 1, 2026

30.8%Verified-email coverage

56.1Average contacts per company

11-50Median size (employees)

1.4%Largest-city concentration · Sao Paulo

Oct 1, 2026Page data refreshed

Companies by employee count

1-10

1,920

11-50

2,133

51-200

690

201-500

191

501-1,000

1,001-5,000

5,001-10,000

10001+

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 core administrative processing systems software companies are linked below.
What qualifies: Company records worldwide whose business descriptions match “core administrative processing systems software companies” 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 88,238 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on October 1, 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.

Core administrative processing systems software companies by location

38 lists · largest first

Every Core administrative processing systems software companies 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 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 “core administrative processing systems software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many core administrative processing systems software companies are there worldwide?

RevenueBase identified 5,102 company matches for core administrative processing systems software companies worldwide as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

ADP tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most core administrative processing systems software companies?

India leads with 547 companies, followed by Brazil (526) and the United States (420). Every core administrative processing systems software companies list by country and city is linked on this page.

Which city has the most core administrative processing systems software companies?

Sao Paulo leads with 70 company records, followed by Tehran (55) and Dubai (52).

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 88,238 professional contacts with verified work emails tracked across these 5,102 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 1, 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.