Company lists · Data refreshed November 2026

Top 25 System administration outsourcing companies worldwide

RevenueBase identified 3,862 company matches for system administration outsourcing companies worldwide as of November 2026 and tracks 34,956 professional contacts across them, including 5,873 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for system administration outsourcing 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 November 5, 2026. Country and city lists for system administration outsourcing 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 Nov 5, 2026 How this list was built
3,862Companies
34,956Contacts tracked
5,873Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest system administration outsourcing companies worldwide

Ranked by team size
Top 25 of 3,862 company matches for system administration outsourcing companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchNoida, IndiaHQ recorded Nov 5, 20261,001-5,0002,141 contacts →

Exact match

“Aforeserve delivers IT infrastructure services, field support, and managed operations for enterprises across India.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchNúcleo Bandeirante, BrazilHQ recorded Nov 5, 202610001+900 contacts →

Exact match

“Real JG Facilities, empresa de terceirização.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchKolkata, IndiaHQ recorded Nov 5, 2026501-1,000885 contacts →

Exact match

“Kaizen is a premier IT Services company headquartered in Kolkata and having its presence in Pan India with 750 Plus Touch Points.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchDenmarkHQ recorded Nov 5, 2026n/a642 contacts →

Exact match

“Spar op til 80 % på den daglige drift af jeres IT miljø Lej en ekstern IT konsulent til optimering af IT i din virksomhed IT konsulent på lejebasis.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchBezerros, BrazilHQ recorded Nov 5, 20261,001-5,000382 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchRiga, LatviaHQ recorded Nov 5, 2026n/a363 contacts →

Exact match

“SPX is IT outsourcing company ir Riga, Latvia.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchQuezon City, PhilippinesHQ recorded Nov 5, 2026201-500312 contacts →

Exact match

“ABOUT US Systemantech Inc.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchArundel, AustraliaHQ recorded Nov 5, 2026n/a252 contacts →

Exact match

“ONGC Systems provides businesses with comprehensive IT services, that automate and streamline operations, reduce risk and increase stability while lowering the cost of system…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchBerlin, GermanyHQ recorded Nov 5, 2026201-500196 contacts →

Exact match

“Since Mahr EDV has been synonymous with reliable IT support, excellent service, and the highest customer satisfaction.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchHoffman Estates, IL, United StatesHQ recorded Nov 5, 2026n/a188 contacts →

Exact match

“DSN Group provides cost effective solutions that enable companies to manage their IT/computer infrastructure better.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchReeuwijk, NetherlandsHQ recorded Nov 5, 202651-200140 contacts →

Exact match

“We are the experts in proactive management of complex IT environments.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchMonterrey, MexicoHQ recorded Nov 5, 202611-50133 contacts →

Exact match

“Infraestructura y servicios profesionales: Servidores x86, x64, IA64 Almacenamiento, SAN, NAS, FC, iSCSI Redes, LAN, VLANs, VPNs Virtualización de Servidores, escritorios…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchBangalore, IndiaHQ recorded Nov 5, 202651-200121 contacts →

Exact match

“Proziod Analytics is an experienced team of programmers, analysts, and IT experts.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchKochi, IndiaHQ recorded Nov 5, 202651-200119 contacts →

Exact match

“Managing millions of hosted accounts since 2006.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchNoida, QC, IndiaHQ recorded Nov 5, 2026201-500118 contacts →

Exact match

“TERiX is a comprehensive global IT solution provider that focuses on quality & value in the data center.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchVista, CA, United StatesHQ recorded Nov 5, 202651-200115 contacts →

Exact match

“Abtech Technologies is a leading IT solutions, support and managed services provider based in Carlsbad California.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchSão Bernardo Do Campo, BrazilHQ recorded Nov 5, 202651-200113 contacts →

Exact match

“Nosso objetivo é tornar possível que nossos clientes tenham uma TI de ponta, independentemente de seu porte ou segmento, sem que precisem se tornar-se especialistas na área ou…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchZłotniki, PolandHQ recorded Nov 5, 202611-50100 contacts →

Exact match

“We specialise in IT outsourcing for medium and large companies located across Poland.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchHochheim Am Main, GermanyHQ recorded Nov 5, 2026201-50097 contacts →

Exact match

“Technogroup is the market leader for third-party maintenance (TPM) in data centres in Germany, Austria and Switzerland and, as a member of the Evernex Group, is the market leader…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchZagreb, CroatiaHQ recorded Nov 5, 202611-5095 contacts →

Exact match

“Integra Group was founded in 1990 as a service oriented company.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchSan Jose, NC, United StatesHQ recorded Nov 5, 202651-20082 contacts →

Exact match

“AMS is an industry veteran of designing, building, configuring and maintaining highly reliable system environments for Electronic Design and Automation (EDA) workflows.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchUnited StatesHQ recorded Nov 5, 202651-20078 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchMandaluyong City, PhilippinesHQ recorded Nov 5, 202651-20075 contacts →

Exact match

“TECHSUPPORT has been in the forefront of outsourced services in the Philippines’ SME market since 2002.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchBuenos Aires, ArgentinaHQ recorded Nov 5, 202651-20074 contacts →

Exact match

“The technology industry is undergoing an undisputable transformation.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchGondia, IndiaHQ recorded Nov 5, 202651-20073 contacts →

Exact match

“We bring you leading skill sets, economies of scale and reliability, very competitively.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 3,862 system administration outsourcing companies worldwide

See the full list, filter by size, metro and specialty, and access 5,873 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

System administration outsourcing companies worldwide at a glance

As of Nov 5, 2026
16.8%Verified-email coverage
9.1Average contacts per company
1-10Median size (employees)
1.4%Largest-city concentration · Sao Paulo
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
2,621
11-50
971
51-200
148
201-500
41
501-1,000
11
1,001-5,000
8
10001+
3

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 system administration outsourcing companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “system administration outsourcing 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 5,873 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 November 5, 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.

System administration outsourcing companies by location

24 lists · largest first

Every System administration outsourcing 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 “system administration outsourcing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many system administration outsourcing companies are there worldwide?

RevenueBase identified 3,862 company matches for system administration outsourcing companies worldwide as of November 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?

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

Which country has the most system administration outsourcing companies?

The United States leads with 792 companies, followed by Brazil (273) and France (209). Every system administration outsourcing companies list by country and city is linked on this page.

Which city has the most system administration outsourcing companies?

Sao Paulo leads with 54 company records, followed by London (44) and Warsaw (26).

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 5,873 professional contacts with verified work emails tracked across these 3,862 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 November 5, 2026.

Ready to reach these companies? Verified emails and direct dials for all 3,862 system administration outsourcing companies worldwide. Start with a free account, no credit card.

Download this list →

Related lists

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.