Company lists · Data refreshed September 2026

Top 25 System administration outsourcing firms based in Canada

RevenueBase identified 474 system administration outsourcing firms headquartered in Canada as of September 2026 and tracks 3,174 professional contacts across them, including 1,381 with verified work emails and 256 with mobile numbers. Toronto is the largest hub.

This list covers system administration outsourcing firms headquartered in Canada, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 6, 2026 86% judged on-target in blind review
474Companies
3,174Contacts tracked
1,381Verified emails
256Mobile numbers
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The 25 largest system administration outsourcing firms based in Canada

Ranked by team size
Top 25 of 474 system administration outsourcing firms based in Canada, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to system administration outsourcing firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceDartmouth, NS, CanadaHQ checked Sep 6, 202651-200138 contacts →

“With over 50 years of technological evolution ABM's promise is to provide technology that grows with you and your business.”

Source: company website · checked Sep 6, 2026
2Indirect evidenceMontreal, QC, CanadaHQ checked Sep 6, 2026501-1,000107 contacts →

“VOTRE PARTENAIRE DE CONFIANCE POUR LES SOLUTIONS TECHNOLOGIQUES D’ENTREPRISE La transformation numérique est bien plus qu’un métier pour nous, c’est un engagement.”

Source: company website · checked Sep 6, 2026
3Partial evidenceBlainville, QC, CanadaHQ checked Sep 6, 202651-200102 contacts →

“Solulan is an IT management consulting firm founded in specializing in the integration and maintenance of computer systems.”

Source: company website · checked Sep 6, 2026
4Indirect evidenceNewmarket, ON, CanadaHQ checked Sep 6, 202611-5076 contacts →

“TCS delivers end-to-end Connected IT Solutions, Outsourced IT Support and Managed IT Services so that our clients can focus on their core operations while ensuring their…”

Source: company website · checked Sep 6, 2026
5Indirect evidenceEdmonton, AB, CanadaHQ checked Sep 6, 202651-20057 contacts →

“Accurate Network Services is an IT Managed Services Provider offering solutions that go beyond break-fix support.”

Source: company website · checked Sep 6, 2026
6Indirect evidenceMontreal, QC, CanadaHQ checked Sep 6, 202611-5051 contacts →

“CDMS Inc No matter what your IT environment is, Managed IT Solutions are an important tool for any company concerned with its daily challenges.”

Source: company website · checked Sep 6, 2026
7Partial evidenceMontréal, QC, CanadaHQ checked Sep 6, 202611-5049 contacts →

“Offering an accessible alternative to outsourcing giants, OS4 Techno specializes in customized hybrid outsourcing by function.”

Source: company website · checked Sep 6, 2026
8Indirect evidenceQuébec, QC, CanadaHQ checked Sep 6, 202651-20042 contacts →

“Founded in 1996, our company has offered IT services to businesses in Quebec for over twenty years.”

Source: company website · checked Sep 6, 2026
9Partial evidenceOttawa, ON, CanadaHQ checked Sep 6, 202611-5040 contacts →

“NeoLore provides personalized client network support solutions backed up by comprehensive Management and Support Systems that deliver efficient and cost effective Information…”

Source: company website · checked Sep 6, 2026
10Partial evidenceCalgary, AB, CanadaHQ checked Sep 6, 2026n/a34 contacts →

“Computer Infrastructure Consulting Services Incorporated (CICS) provides technology solutions for enterprise-wide systems and networks using analysis, design, implementation…”

Source: company website · checked Sep 6, 2026
11Indirect evidenceAncaster, ON, CanadaHQ checked Sep 6, 202651-20031 contacts →

“Audcomp, is a Canadian information technology solutions and managed services provider headquartered in Ancaster, Ontario.”

Source: company website · checked Sep 6, 2026
12Indirect evidenceNavin, MB, CanadaHQ checked Sep 6, 202611-5030 contacts →

“365 Technologies delivers Worry-Free IT® support and services to small- and medium-sized businesses in Winnipeg, Manitoba and its surrounding area seven days a week, 24 hours a…”

Source: company website · checked Sep 6, 2026
13Partial evidenceVancouver, BC, CanadaHQ checked Sep 6, 202611-5027 contacts →

“At Dyrand Systems, we believe technology is most effective when it’s human-centric and driven with purpose.”

Source: company website · checked Sep 6, 2026
14Indirect evidenceAbbotsford, BC, CanadaHQ checked Sep 6, 202611-5026 contacts →

“Red Rhino Networks provides proactive IT service to manage your computer network.”

Source: company website · checked Sep 6, 2026
15Partial evidenceMississauga, ON, CanadaHQ checked Sep 6, 202651-20026 contacts →

“ZCOM Systems Group Inc (aka ZCOM) is an independent Systems Integration services provider.”

Source: company website · checked Sep 6, 2026
16Indirect evidenceMississauga, ON, CanadaHQ checked Sep 6, 202611-5026 contacts →

“NETWORTH provides Managed IT Services to businesses across Canada.”

Source: company website · checked Sep 6, 2026
17Indirect evidenceLondon, ON, CanadaHQ checked Sep 6, 202611-5025 contacts →

“As your trusted IT service provider, Consys Group will assess your needs, help you choose the best hardware and software to provide a hassle-free IT experience.”

Source: company website · checked Sep 6, 2026
18Indirect evidenceCalgary, AB, CanadaHQ checked Sep 6, 202611-5025 contacts →

“Direct Tec offers strategic business IT support and services that is backed by a team of experts you can rely on.”

Source: company website · checked Sep 6, 2026
19Indirect evidenceMississauga, ON, CanadaHQ checked Sep 6, 202651-20024 contacts →

“ITM Global Services (ITM) is a trusted leader and provider in IT, serving SMB and Enterprise companies with award-winning IT services and solutions in Canada since We take care of…”

Source: company website · checked Sep 6, 2026
20Indirect evidenceVancouver, BC, CanadaHQ checked Sep 6, 202611-5024 contacts →

“Founded in 2003, Sea to Sky Network Solutions is a 100% Canadian-owned company dedicated to enhancing the efficiency and growth of small to medium-sized businesses through expert…”

Source: company website · checked Sep 6, 2026
21Indirect evidenceBrossard, QC, CanadaHQ checked Sep 6, 202611-5024 contacts →

“Les entreprises d’aujourd’hui reconnaissent l’importance de l’informatique dans leurs activités de tous les jours.”

Source: company website · checked Sep 6, 2026
22Indirect evidenceSarnia, ON, CanadaHQ checked Sep 6, 202611-5023 contacts →

“Leadwave Technologies levels the playing field by making appropriate, big-business IT solutions available to small and medium-sized organizations.”

Source: company website · checked Sep 6, 2026
23Indirect evidenceSainte-julie, QC, CanadaHQ checked Sep 6, 202611-5023 contacts →

“Notre mission est d’être votre partenaire en soutien informatique, plutôt qu’un simple fournisseur.”

Source: company website · checked Sep 6, 2026
24Indirect evidenceToronto, ON, CanadaHQ checked Sep 6, 202611-5021 contacts →

“Since 1986, Tenecom has been providing unsurpassed network solutions, with an emphasis on small to medium sized businesses.”

Source: company website · checked Sep 6, 2026
25Indirect evidenceWinnipeg, MB, CanadaHQ checked Sep 6, 202611-5021 contacts →

“Oxygen Technical Services Ltd.”

Source: company website · checked Sep 6, 2026

Showing 25 of 474 system administration outsourcing firms based in Canada

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System administration outsourcing firms based in Canada at a glance

As of Sep 6, 2026
43.5%Verified-email coverage
8.1%Mobile-number coverage
6.7Average contacts per company
1-10Median size (employees)
11.2%Largest-city concentration · Toronto
Sep 6, 2026Page data refreshed

Companies by employee count

1-10
306
11-50
149
51-200
15
201-500
2
501-1,000
1

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among system administration outsourcing firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Canada whose own description of what they do matches “system administration outsourcing firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names system administration outsourcing firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among system administration outsourcing firms, and records with no verified work email. Companies headquartered outside Canada are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 1,381 across the full list. 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 6, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names system administration outsourcing firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many system administration outsourcing firms are there based in Canada?

RevenueBase identified 474 system administration outsourcing firms headquartered in Canada as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

ABM Integrated Solutions, headquartered in Dartmouth, tops this list with the largest team on record.

Which city has the most system administration outsourcing firms?

Toronto leads with 53 headquartered companies, followed by Calgary (42) and Montreal (32).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,381 verified decision-maker contacts tracked across these 474 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 6, 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 Smart Search, 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.