Company lists · Data refreshed November 2026

Top 25 System administration outsourcing firms worldwide

Name: System administration outsourcing firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 3,905 companies tracked

RevenueBase identified 3,905 company matches for system administration outsourcing firms worldwide as of November 2026 and tracks 32,732 professional contacts across them, including 6,203 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 firms 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 firms 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

3,905Companies

32,732Contacts tracked

6,203Verified emails

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The 25 largest system administration outsourcing firms worldwide

Ranked by team size

Top 25 of 3,905 company matches for system administration outsourcing firms 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Kaizen IT Services Pvt. LTD	Exact match	Kolkata, IndiaHQ recorded Nov 5, 2026	501-1,000	885 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
2	SES	Exact match	DenmarkHQ recorded Nov 5, 2026	n/a	642 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
3	Cmit Solutions	Exact match	Austin, OR, United StatesHQ recorded Nov 5, 2026	501-1,000	458 contacts →
	Exact match “CMIT Solutions is a premier IT solution company dedicated to delivering enterprise-class IT support to businesses across North America.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4	Adlim-Terceirizacao EM Servicos	Exact match	Bezerros, BrazilHQ recorded Nov 5, 2026	1,001-5,000	382 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5	SPX	Exact match	Riga, LatviaHQ recorded Nov 5, 2026	n/a	363 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
6	Systemantech INC	Exact match	Quezon City, PhilippinesHQ recorded Nov 5, 2026	201-500	312 contacts →
	Exact match “ABOUT US Systemantech Inc.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7	Ongc Systems	Exact match	Arundel, AustraliaHQ recorded Nov 5, 2026	n/a	252 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
8	Mahr EDV Gmbh	Exact match	Berlin, GermanyHQ recorded Nov 5, 2026	201-500	196 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
9	DSN Group	Exact match	Hoffman Estates, IL, United StatesHQ recorded Nov 5, 2026	n/a	188 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
10	Qualcom	Exact match	Dublin 8, United KingdomHQ recorded Nov 5, 2026	51-200	184 contacts →
	Exact match “Qualcom provides ultra secure managed IT services using a security first ethos which maximises IT uptime and ensures that data is protected and accessible 24/7.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11	SPS IT Group	Exact match	Reeuwijk, NetherlandsHQ recorded Nov 5, 2026	51-200	140 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
12	Aptec México	Exact match	Monterrey, MexicoHQ recorded Nov 5, 2026	11-50	133 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
13	Proziod Analytics	Exact match	Bangalore, IndiaHQ recorded Nov 5, 2026	51-200	121 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
14	Activelobby Supportlobby.com	Exact match	Kochi, IndiaHQ recorded Nov 5, 2026	51-200	119 contacts →
	Exact match “Managing millions of hosted accounts since 2006.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15	Abtech Technologies	Exact match	Vista, CA, United StatesHQ recorded Nov 5, 2026	51-200	115 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
16	BNP	Exact match	São Bernardo Do Campo, BrazilHQ recorded Nov 5, 2026	51-200	113 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
17	Ramsac	Exact match	Guildford, United KingdomHQ recorded Nov 5, 2026	51-200	100 contacts →
	Exact match “ramsac provide so much more than just IT support.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18	Technogroup It-Service Gmbh	Exact match	Hochheim Am Main, GermanyHQ recorded Nov 5, 2026	201-500	97 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
19	Integra Group	Exact match	Zagreb, CroatiaHQ recorded Nov 5, 2026	11-50	95 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
20	AMS Dataserfs, INC	Exact match	San Jose, NC, United StatesHQ recorded Nov 5, 2026	51-200	82 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
21	Techsupport	Exact match	Mandaluyong City, PhilippinesHQ recorded Nov 5, 2026	51-200	75 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
22	Nubity	Exact match	Buenos Aires, ArgentinaHQ recorded Nov 5, 2026	51-200	74 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
23	M S Ephp Solutions	Exact match	Gondia, IndiaHQ recorded Nov 5, 2026	51-200	73 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
24	CMI	Exact match	Belfast, United KingdomHQ recorded Nov 5, 2026	51-200	70 contacts →
	Exact match “We create, design, deliver and support informed & intelligent strategies to navigate shifting technology, keeping organisations like yours effective & secure.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25	Managed IT HUB	Exact match	Dover, United StatesHQ recorded Nov 5, 2026	51-200	66 contacts →
	Exact match “Managed IT Hub provides ISO 27001 and 9001 certified White-label IT support services and B2B demand generation, lead generation, appointment setting and list for MSPs, SaaS…” Recorded in the RevenueBase company graph · Nov 5, 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 “system administration outsourcing firms”. 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 3,905 system administration outsourcing firms worldwide

See the full list, filter by size, metro and specialty, and access 6,203 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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System administration outsourcing firms worldwide at a glance

As of Nov 5, 2026

19.0%Verified-email coverage

8.4Average 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

2,707

11-50

961

51-200

135

201-500

501-1,000

1,001-5,000

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 firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “system administration outsourcing firms” 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 6,203 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 firms by location

57 lists · largest first

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

How many system administration outsourcing firms are there worldwide?

RevenueBase identified 3,905 company matches for system administration outsourcing firms 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?

Kaizen IT Services Pvt. 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 firms?

The United States leads with 875 companies, followed by Brazil (255) and France (203). Every system administration outsourcing firms list by country and city is linked on this page.

Which city has the most system administration outsourcing firms?

Sao Paulo leads with 54 company records, followed by London (47) and New York (28).

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 6,203 professional contacts with verified work emails tracked across these 3,905 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.

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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.