Company lists · Data refreshed September 2026

Top 18 System administration outsourcing companies based in Sydney, Australia

RevenueBase identified 36 company matches for system administration outsourcing companies associated with Sydney, Australia as of September 2026 and tracks 344 professional contacts across them, including 60 with verified work emails. Across Australia, Sydney is the largest hub for this category.

This list covers company matches for system administration outsourcing companies associated with Sydney, Australia, 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 29, 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 29, 2026 How this list was built
36Companies
344Contacts tracked
60Verified emails
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The 18 largest system administration outsourcing companies based in Sydney, Australia

Ranked by team size
Top 18 of 36 company matches for system administration outsourcing companies based in Sydney, Australia, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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 matchSydney, AustraliaHQ recorded Sep 29, 202651-20052 contacts →

Exact match

“REXTECH, headquartered in Australia, is a global leader in the realm of managed IT solutions, covering Applications, Business Process Outsourcing, and IT Infrastructure services.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2Exact matchSydney, AustraliaHQ recorded Sep 29, 202651-20016 contacts →

Exact match

“Drake Business Logistics is a leading managed services provider, offering complete outsourced management of non-core support functions to deliver measurable cost reductions and…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3Exact matchSydney, AustraliaHQ recorded Sep 29, 202611-509 contacts →

Exact match

“Since 2002, Milnsbridge has been delivering proactive managed IT services that let Sydney businesses focus on growth, not IT headaches.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchSydney, AustraliaHQ recorded Sep 29, 20261-108 contacts →

Exact match

“Assistech is a Sydney-based IT Services Company, dedicated to providing swift and reliable IT solutions to businesses across various sizes and industries.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact matchSydney, AustraliaHQ recorded Sep 29, 202611-506 contacts →

Exact match

“Starboard IT an Australian business, started as a conversation on how we could offer better, more personalised IT services.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6Exact matchSydney, AustraliaHQ recorded Sep 29, 20261-106 contacts →

Exact match

“Inteck IT is a Sydney based Information Technology Managed Services Provider that provides services statewide.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7Exact matchSydney, AustraliaHQ recorded Sep 29, 202611-506 contacts →

Exact match

“For close to 20 years, RMS Tech has been helping small businesses in Sydney, get the most out of their business technology.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchSydney, AustraliaHQ recorded Sep 29, 202611-505 contacts →

Exact match

“Specialising in the supply of infrastructure, software, managed services, outsourcing and cloud-based outcomes.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9Exact matchSydney, AustraliaHQ recorded Sep 29, 20261-104 contacts →

Exact match

“We are Sydney based, and are here to provide your business with IT Support, solutions and Managed IT services to help your business with all your IT needs.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10Exact matchSydney, AustraliaHQ recorded Sep 29, 20261-103 contacts →

Exact match

“What we do: NSIT's affordable IT support services covers all Windows, Linux, and Cisco network support and consulting requirements.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchSydney, AustraliaHQ recorded Sep 29, 20261-103 contacts →

Exact match

“Layer 1 Technologies provides your business with a single point of contact for all their IT needs, making it easier for them to manage and maintain your technology.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12Exact matchSydney, AustraliaHQ recorded Sep 29, 20261-102 contacts →

Exact match

“Infocom IT is an IT Managed Services and Network Support company based in Sydney.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13Exact matchSydney, AustraliaHQ recorded Sep 29, 20261-102 contacts →

Exact match

“ITechnique is an Australian owned and operated IT services company for small and medium-sized businesses.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchSydney, AustraliaHQ recorded Sep 29, 20261-102 contacts →

Exact match

“We simplify IT for businesses.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15Exact matchSydney, AustraliaHQ recorded Sep 29, 20261-101 contacts →

Exact match

“We’re a fantastic bunch of dedicated specialists that are all about one thing: keeping your IT working smoothly and efficiently.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchSydney, AustraliaHQ recorded Sep 29, 20261-101 contacts →

Exact match

“Wrighton Computer Services provides reliable, practical IT support for small and medium businesses.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchSydney, AustraliaHQ recorded Sep 29, 20261-101 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchSydney, AustraliaHQ recorded Sep 29, 20261-101 contacts →

Exact match

“Customised and practical IT management solutions for a more secure & productive environment.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 18 of 36 system administration outsourcing companies based in Sydney, Australia

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System administration outsourcing companies based in Sydney, Australia at a glance

As of Sep 29, 2026
17.4%Verified-email coverage
9.6Average contacts per company
1-10Median size (employees)
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
22
11-50
10
51-200
4

Email recency for this list is measured across the whole Australia list rather than for Sydney, so it is reported there. Company counts and contact totals on this page are exact for Sydney, over 36 companies.

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 Sydney, Australia 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. 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 60 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 29, 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.

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 based in Sydney, Australia?

RevenueBase identified 36 company matches for system administration outsourcing companies associated with Sydney, Australia 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?

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

Which city in Australia has the most system administration outsourcing companies?

Sydney leads Australia with 36 company records, followed by Melbourne (24) and Perth (17).

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 60 professional contacts with verified work emails tracked across these 36 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 29, 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.