Company lists · Data refreshed September 2026

Top 25 IT infrastructure and security companies based in Toronto, Canada

Name: IT infrastructure and security companies based in Toronto, Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 362 companies tracked

RevenueBase identified 362 IT infrastructure and security companies headquartered in Toronto, Canada as of September 2026 and tracks 4,315 professional contacts across them, including 1,820 with verified work emails. Across Canada, Toronto is the largest hub for this category.

This list covers IT infrastructure and security companies headquartered in Toronto, 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 27, 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 27, 2026 86% judged on-target in blind review

362Companies

4,315Contacts tracked

1,820Verified emails

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The 25 largest IT infrastructure and security companies based in Toronto, Canada

Ranked by team size

Top 25 of 362 IT infrastructure and security companies based in Toronto, Canada, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to IT infrastructure and security companies: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Bluecat	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	201-500	626 contacts →
	Indirect evidence “BlueCat provides core services and solutions that help our customers and their teams deliver change-ready networks.” Source: RevenueBase Database · checked Sep 27, 2026
2	ONX	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	1,001-5,000	405 contacts →
	Indirect evidence “OnX helps organizations modernize, secure, and optimize their technology environments to support long-term business success.” Source: RevenueBase Database · checked Sep 27, 2026
3	Trillium Information Security Systems	Partial evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	51-200	239 contacts →
	Partial evidence “Trillium Information Security Systems (TISS) is a leading global provider of cybersecurity solutions and services, established in 2005.” Source: RevenueBase Database · checked Sep 27, 2026
4	APTUM	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	201-500	159 contacts →
	Indirect evidence “In this era of ubiquitous computing the defining, delivering, managing, and scaling your digital services in a reliable and cost effectively has never been more complicated.” Source: RevenueBase Database · checked Sep 27, 2026
5	Glasshouse Systems	Strong evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	51-200	150 contacts →
	Strong evidence “GlassHouse Systems (GHS) is an infrastructure, security, and managed services solutions provider who develops, designs and deploys solutions for leading enterprises in Canada and…” Source: RevenueBase Database · checked Sep 27, 2026
6	ZAZZ	Partial evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	501-1,000	150 contacts →
	Partial evidence “Zazz is a trusted software engineering and IT services partner helping enterprises deliver secure, scalable, and high-impact technology initiatives.” Source: RevenueBase Database · checked Sep 27, 2026
7	ISA Cybersecurity	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	51-200	86 contacts →
	Indirect evidence “ISA Cybersecurity is one of Canada’s leading cybersecurity services and solutions providers.” Source: RevenueBase Database · checked Sep 27, 2026
8	NEW Horizon System Solutions LP	Strong evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	501-1,000	68 contacts →
	Strong evidence “A member of Capgemini providing Consulting Services, IT Outsourcing, Data Center Services, Infrastructure Outsourcing, Infrastructure Transformation Services, Remote…” Source: RevenueBase Database · checked Sep 27, 2026
9	Eitekh	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	51-200	67 contacts →
	Indirect evidence “Founded in 2013, Eitekh is a North America–based technology consulting firm that helps organizations navigate complex enterprise technology landscapes and maximize the value of…” Source: RevenueBase Database · checked Sep 27, 2026
10	Carbon60	Partial evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	51-200	66 contacts →
	Partial evidence “Carbon60 is a trusted managed cloud hosting and IT services provider for private and public-sector organizations with business-critical applications.” Source: RevenueBase Database · checked Sep 27, 2026
11	Nuvollo Corp	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	11-50	52 contacts →
	Indirect evidence “Nuvollo provides organizations with the “Right Customer Experience” through seemless secure and compliance based connectivity for their mission critical ERP and CRM applications.” Source: RevenueBase Database · checked Sep 27, 2026
12	Deop INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	51-200	52 contacts →
	Indirect evidence “At DEOP, we transform businesses with cutting-edge cloud and technology solutions.” Source: RevenueBase Database · checked Sep 27, 2026
13	Cruciallogics	Partial evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	51-200	48 contacts →
	Partial evidence “We help organizations secure and manage their IT environments using the Microsoft-native technologies they already own.” Source: RevenueBase Database · checked Sep 27, 2026
14	Reliance North America	Indirect evidence	Toronto, CanadaHQ checked Sep 27, 2026	51-200	43 contacts →
	Indirect evidence “As our name suggests, our customers rely on us in providing suitable technology inputs to support their business goals.” Source: RevenueBase Database · checked Sep 27, 2026
15	Caretek	Indirect evidence	Toronto, CanadaHQ checked Sep 27, 2026	11-50	41 contacts →
	Indirect evidence “Today’s business environment is more competitive than ever.” Source: RevenueBase Database · checked Sep 27, 2026
16	Cyderes	Partial evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	501-1,000	37 contacts →
	Partial evidence “Cyderes is a global cybersecurity powerhouse offering comprehensive solutions around managed security, identity and access management, and professional services.” Source: RevenueBase Database · checked Sep 27, 2026
17	Elastify	Partial evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	11-50	34 contacts →
	Partial evidence “As your business grows, keeping up with compliance requirements and strengthening your security posture can be a real challenge.” Source: RevenueBase Database · checked Sep 27, 2026
18	Micro Computer Consulting INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	11-50	32 contacts →
	Indirect evidence “In today's business landscape, technology is the core engine for growth and innovation.” Source: RevenueBase Database · checked Sep 27, 2026
19	Hudson Technology	Partial evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	51-200	31 contacts →
	Partial evidence “Hudson Technology is a Managed IT Services and Cybersecurity provider (MSP/MSSP) helping businesses across Canada and the U.S.” Source: RevenueBase Database · checked Sep 27, 2026
20	Fusion Computing Limited	Partial evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	11-50	31 contacts →
	Partial evidence “Fusion Computing is a Canadian-owned managed IT and cybersecurity firm serving businesses across Toronto, Hamilton, the GTA, and Metro Vancouver since 2012.” Source: RevenueBase Database · checked Sep 27, 2026
21	Business Cloud INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	11-50	30 contacts →
	Indirect evidence “Business Cloud manages and supports your business technology, preventing problems so that you can focus on scaling your business.” Source: RevenueBase Database · checked Sep 27, 2026
22	Tuor Networks	Partial evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	11-50	27 contacts →
	Partial evidence “Tuor Networks provides comprehensive end-to-end Managed IT Services to support our clients’ business strategies and future growth plans and help solve even their most complex…” Source: RevenueBase Database · checked Sep 27, 2026
23	Interware Systems	Partial evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	11-50	26 contacts →
	Partial evidence “Founded in 1984, Interware is a pioneer in the IT industry and has remained competitive by adopting a progressive attitude and a continuously improving work ethic.” Source: RevenueBase Database · checked Sep 27, 2026
24	Genieall Corporation	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	11-50	25 contacts →
	Indirect evidence “Is your wish that your users were able to work seamlessly from any location in a work-style that fits your business?” Source: RevenueBase Database · checked Sep 27, 2026
25	Triotech Systems	Partial evidence	Toronto, ON, CanadaHQ checked Sep 27, 2026	11-50	25 contacts →
	Partial evidence “Founded in 2020, Triotech Systems helps businesses scale with smarter IT solutions.” Source: RevenueBase Database · checked Sep 27, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: IT infrastructure and security companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names IT infrastructure and security companies.
Partial evidence: Its own public description names part of IT infrastructure and security companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name IT infrastructure and security companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 362 IT infrastructure and security companies based in Toronto, Canada

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IT infrastructure and security companies based in Toronto, Canada at a glance

As of Sep 27, 2026

42.2%Verified-email coverage

11.9Average contacts per company

11-50Median size (employees)

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

179

11-50

139

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole Canada list rather than for Toronto, so it is reported there. Company counts and contact totals on this page are exact for Toronto, over 362 companies.

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 IT infrastructure and security companies, 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 Toronto, Canada whose own description of what they do matches “IT infrastructure and security companies”. 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 IT infrastructure and security companies), 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 IT infrastructure and security companies, and records with no verified work email. Companies headquartered outside Toronto 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, 1,820 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 27, 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.

IT infrastructure and security companies by metro in Canada

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 IT infrastructure and security companies, 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 IT infrastructure and security companies are there based in Toronto, Canada?

RevenueBase identified 362 IT infrastructure and security companies headquartered in Toronto, 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?

Bluecat, headquartered in Toronto, tops this list with the largest team on record.

Which city in Canada has the most IT infrastructure and security companies?

Toronto leads Canada with 362 headquartered companies, followed by Calgary (181) and Montreal (154).

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 1,820 verified decision-maker contacts tracked across these 362 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 27, 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.