Company lists · Data refreshed September 2026

Top 25 Legacy system modernization companies based in Canada

Name: Legacy system modernization companies based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 965 companies tracked

RevenueBase identified 965 legacy system modernization companies headquartered in Canada as of September 2026 and tracks 56,630 professional contacts across them, including 9,801 with verified work emails. Toronto is the largest hub.

This list covers legacy system modernization companies 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 20, 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 20, 2026 86% judged on-target in blind review

965Companies

56,630Contacts tracked

9,801Verified emails

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The 25 largest legacy system modernization companies based in Canada

Ranked by team size

Top 25 of 965 legacy system modernization companies based in Canada, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to legacy system modernization 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	Telus Digital	Indirect evidence	Vancouver, BC, CanadaHQ checked Sep 20, 2026	10001+	38,300 contacts →
	Indirect evidence “TELUS Digital crafts unique and enduring experiences for customers and employees, and creates future-focused digital transformations that stand the test of time.” Source: RevenueBase Database · checked Sep 20, 2026
2	Alithya	Indirect evidence	Montréal, QC, CanadaHQ checked Sep 20, 2026	1,001-5,000	2,338 contacts →
	Indirect evidence “We are trusted advisors who leverage AI and the latest technologies in our strategic consulting and digital transformation services.” Source: RevenueBase Database · checked Sep 20, 2026
3	Syntax	Indirect evidence	CanadaHQ checked Sep 20, 2026	1,001-5,000	1,842 contacts →
	Indirect evidence “Syntax is a leading global technology solutions provider driving enterprise transformation in the cloud.” Source: RevenueBase Database · checked Sep 20, 2026
4	Adastra	Indirect evidence	CanadaHQ checked Sep 20, 2026	1,001-5,000	1,543 contacts →
	Indirect evidence “For over two decades, Adastra Corporation has transformed businesses into digital leaders, helping global organizations innovate, achieve operational excellence, and create…” Source: RevenueBase Database · checked Sep 20, 2026
5	LEVIO	Partial evidence	Québec, QC, CanadaHQ checked Sep 20, 2026	1,001-5,000	1,403 contacts →
	Partial evidence “Levio is a leading North American technology‑focused consulting firm and one of the two largest system integrators fully owned by Canadian interests, specializing in digital…” Source: RevenueBase Database · checked Sep 20, 2026
6	Charter	Indirect evidence	Victoria, BC, CanadaHQ checked Sep 20, 2026	n/a	697 contacts →
	Indirect evidence “Charter, an award-winning IT solution and managed services provider, was founded in 1997 in Victoria, BC, Canada.” Source: RevenueBase Database · checked Sep 20, 2026
7	Fresche Solutions	Strong evidence	Montréal, QC, CanadaHQ checked Sep 20, 2026	201-500	334 contacts →
	Strong evidence “Fresche Solutions is an AI-powered IT modernization company that manages and maximizes the value of your IBM i and Microsoft systems.” Source: RevenueBase Database · checked Sep 20, 2026
8	Blanc Labs	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 20, 2026	501-1,000	297 contacts →
	Indirect evidence “Blanc Labs enables the financial future of tomorrow.” Source: RevenueBase Database · checked Sep 20, 2026
9	Centrilogic	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 20, 2026	201-500	284 contacts →
	Indirect evidence “Centrilogic is a global provider of IT transformation solutions that empower organizations to realize their digital potential.” Source: RevenueBase Database · checked Sep 20, 2026
10	Corporate Renaissance Group	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 20, 2026	51-200	281 contacts →
	Indirect evidence “Since 1989, CRGroup, a Quisitive Company, has been helping leaders transform enterprise management and performance.” Source: RevenueBase Database · checked Sep 20, 2026
11	Talan Americas	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 20, 2026	201-500	265 contacts →
	Indirect evidence “Talan is an international consulting group in innovation and transformation through technology.” Source: RevenueBase Database · checked Sep 20, 2026
12	Celestial Systems INC	Indirect evidence	Burnaby, BC, CanadaHQ checked Sep 20, 2026	201-500	247 contacts →
	Indirect evidence “Celestial is the end-to-end AI transformation partner for regulated industries.” Source: RevenueBase Database · checked Sep 20, 2026
13	TRU	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 20, 2026	201-500	247 contacts →
	Indirect evidence “TRU, our competitive advantage is a borderless Global Talent Network specializing in Digital Transformation, Enterprise AI, and Experience Design.” Source: RevenueBase Database · checked Sep 20, 2026
14	Optimus Information INC	Indirect evidence	Vancouver, BC, CanadaHQ checked Sep 20, 2026	51-200	243 contacts →
	Indirect evidence “Optimus Information is a leading technology consulting company providing professional and managed services.” Source: RevenueBase Database · checked Sep 20, 2026
15	Ncpl INC	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 20, 2026	201-500	178 contacts →
	Indirect evidence “About NCPL NCPL is the leading digital transformation company based in Canada, USA, and India, serving Startups and enterprise customers throughout North America.” Source: RevenueBase Database · checked Sep 20, 2026
16	Transition Consulting Services	Indirect evidence	Québec, QC, CanadaHQ checked Sep 20, 2026	201-500	155 contacts →
	Indirect evidence “Transition Consulting Services is a reference in digital transformation, IT and management.” Source: RevenueBase Database · checked Sep 20, 2026
17	ZAZZ	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 20, 2026	501-1,000	150 contacts →
	Indirect 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 20, 2026
18	Appficiency INC	Indirect evidence	Mississauga, ON, CanadaHQ checked Sep 20, 2026	51-200	132 contacts →
	Indirect evidence “At Appficiency, we help enterprises solve the most complex business technology challenges through strategic tech stack engineering and AI-led transformation.” Source: RevenueBase Database · checked Sep 20, 2026
19	Spiria	Partial evidence	Montreal, QC, CanadaHQ checked Sep 20, 2026	51-200	130 contacts →
	Partial evidence “Spiria partners with organizations to modernize their systems, build custom software, and accelerate digital transformation.” Source: RevenueBase Database · checked Sep 20, 2026
20	J&m Group	Indirect evidence	Mississauga, ON, CanadaHQ checked Sep 20, 2026	51-200	127 contacts →
	Indirect evidence “At J&M Group, we are the strategic partner for businesses ready to redefine their future.” Source: RevenueBase Database · checked Sep 20, 2026
21	Cabot Technology Solutions INC	Indirect evidence	Hamilton, ON, CanadaHQ checked Sep 20, 2026	51-200	119 contacts →
	Indirect evidence “Cabot Technology Solutions is a value-based IT consulting firm delivering high-value, cost-effective solutions using cutting-edge technologies.” Source: RevenueBase Database · checked Sep 20, 2026
22	Busyqa	Indirect evidence	Mississauga, ON, CanadaHQ checked Sep 20, 2026	11-50	105 contacts →
	Indirect evidence “We help our clients modernize their Business through Agentic AI Transformation.” Source: RevenueBase Database · checked Sep 20, 2026
23	Kezber	Indirect evidence	Magog, QC, CanadaHQ checked Sep 20, 2026	51-200	99 contacts →
	Indirect evidence “KEZBER, YOUR TRUE BUSINESS PARTNER A long-standing market leader, Kezber draws on more than 20 years of experience in business IT solutions to support companies in their digital…” Source: RevenueBase Database · checked Sep 20, 2026
24	Paradigm Consulting Group	Indirect evidence	Regina, SK, CanadaHQ checked Sep 20, 2026	51-200	98 contacts →
	Indirect evidence “At Paradigm Consulting Group, we partner with organizations to optimize business processes and technology investments, ensuring seamless digital transformation and IT innovation.” Source: RevenueBase Database · checked Sep 20, 2026
25	Unisystech Consulting	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 20, 2026	501-1,000	91 contacts →
	Indirect evidence “Unisystech is a global technology consulting firm specializing in digital transformation, AI-enabled solutions, and end-to-end enterprise technology delivery across Canada, the…” Source: RevenueBase Database · checked Sep 20, 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: legacy system modernization 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 legacy system modernization companies.
Partial evidence: Its own public description names part of legacy system modernization companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name legacy system modernization 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 965 legacy system modernization companies based in Canada

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Legacy system modernization companies based in Canada at a glance

As of Sep 20, 2026

17.3%Verified-email coverage

58.7Average contacts per company

1-10Median size (employees)

25.6%Largest-city concentration · Toronto

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

499

11-50

305

51-200

112

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for Canada, so it is reported there. Company counts and contact totals on this page are exact for Canada, over 965 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 legacy system modernization 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 Canada whose own description of what they do matches “legacy system modernization 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 legacy system modernization 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 legacy system modernization companies, 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, 9,801 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 20, 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.

Legacy system modernization companies by metro

Legacy system modernization companies in Toronto247
Legacy system modernization companies in Montreal116
Legacy system modernization companies in Mississauga68
Legacy system modernization companies in Vancouver60
Legacy system modernization companies in Calgary54
Legacy system modernization companies in Ottawa27
Legacy system modernization companies in Quebec27

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 legacy system modernization 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 legacy system modernization companies are there based in Canada?

RevenueBase identified 965 legacy system modernization companies 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?

Telus Digital, headquartered in Vancouver, tops this list with the largest team on record.

Which city has the most legacy system modernization companies?

Toronto leads with 247 headquartered companies, followed by Montreal (116) and Mississauga (68).

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 9,801 verified decision-maker contacts tracked across these 965 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 20, 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.