Company lists · Data refreshed September 2026

Top 14 Software modernization services based in Toronto, Canada

RevenueBase identified 44 software modernization services headquartered in Toronto, Canada as of September 2026 and tracks 534 professional contacts across them, including 92 with verified work emails. Across Canada, Toronto is the largest hub for this category.

This list covers software modernization services 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 29, 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 29, 2026 86% judged on-target in blind review
44Companies
534Contacts tracked
92Verified emails
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The 14 largest software modernization services based in Toronto, Canada

Ranked by team size
Top 14 of 44 software modernization services based in Toronto, Canada, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to software modernization services: 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
1Partial evidenceToronto, ON, CanadaHQ checked Sep 29, 2026501-1,000150 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 29, 2026
2Indirect evidenceToronto, ON, CanadaHQ checked Sep 29, 2026501-1,00091 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 29, 2026
3Indirect evidenceToronto, ON, CanadaHQ checked Sep 29, 202651-20048 contacts →

Indirect evidence

“UpScale specializes in modern technologies such as Spring Java, AWS, Azure, GCP, API, Cloud Native Applications, Openshift, Kubernetes, Microservices, Angular, React, Flutter…”

Source: RevenueBase Database · checked Sep 29, 2026
4Partial evidenceToronto, ON, CanadaHQ checked Sep 29, 202611-5048 contacts →

Partial evidence

“GSI Solutions (formerly Gated Shores Interactive) is a technology company focused on migrating legacy systems to the Cloud and delivering custom cloud-based software solutions.”

Source: RevenueBase Database · checked Sep 29, 2026
5Indirect evidenceToronto, ON, CanadaHQ checked Sep 29, 202651-20013 contacts →

Indirect evidence

“WatServ was acquired by Centrilogic on December 5th, 2022.”

Source: RevenueBase Database · checked Sep 29, 2026
6Indirect evidenceToronto, ON, CanadaHQ checked Sep 29, 202611-5012 contacts →

Indirect evidence

“For over five years, Vertmix has helped organizations simplify and modernize how they work, transforming complex processes into connected, intelligent systems.”

Source: RevenueBase Database · checked Sep 29, 2026
7Indirect evidenceToronto, ON, CanadaHQ checked Sep 29, 202651-2009 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026
8Partial evidenceToronto, CanadaHQ checked Sep 29, 202611-508 contacts →

Partial evidence

“Propele Smart Solutions is a global technology and digital transformation firm helping organizations design, build, and scale intelligent software products.”

Source: RevenueBase Database · checked Sep 29, 2026
9Partial evidenceToronto, ON, CanadaHQ checked Sep 29, 20261-106 contacts →

Partial evidence

“We are a full-service software development company specializing in Software Architecture Development, Cloud Solutions Architecture, and Security Audits.”

Source: RevenueBase Database · checked Sep 29, 2026
10Partial evidenceToronto, ON, CanadaHQ checked Sep 29, 20261-103 contacts →

Partial evidence

“We provide solutions on Digital ( App Modernization, Cloud and DevOps) Technologies”

Source: RevenueBase Database · checked Sep 29, 2026
11Indirect evidenceToronto, CanadaHQ checked Sep 29, 20261-102 contacts →

Indirect evidence

“DevOps|Refactoring|POC Development|Cloud Native Application Development |Data Engineering”

Source: RevenueBase Database · checked Sep 29, 2026
12Indirect evidenceToronto, CanadaHQ checked Sep 29, 20261-102 contacts →

Indirect evidence

“At WorkCliff, we specialize in enterprise-grade digital transformation, bringing legacy systems into the future across public and private sectors.”

Source: RevenueBase Database · checked Sep 29, 2026
13Partial evidenceToronto, ON, CanadaHQ checked Sep 29, 20261-101 contacts →

Partial evidence

“We deliver practical, cost-effective, and reliable cloud and software consulting solutions with expertise in- Cloud Adoption & Native Development (Azure, AWS, GCP, OCI)- Systems…”

Source: RevenueBase Database · checked Sep 29, 2026
14Indirect evidenceToronto, ON, CanadaHQ checked Sep 29, 20261-101 contacts →

Indirect evidence

“We believe in doing the right thing.”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 14 of 44 software modernization services based in Toronto, Canada

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Software modernization services based in Toronto, Canada at a glance

As of Sep 29, 2026
17.2%Verified-email coverage
12.1Average contacts per company
1-10Median size (employees)
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
24
11-50
9
51-200
9
501-1,000
2

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 44 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 software modernization services, 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 “software modernization services”. 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 software modernization services), 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 software modernization services, 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, 92 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 29, 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 software modernization services, 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 software modernization services are there based in Toronto, Canada?

RevenueBase identified 44 software modernization services 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?

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

Which city in Canada has the most software modernization services?

Toronto leads Canada with 44 headquartered companies, followed by Montreal (22) and Mississauga (10).

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 92 verified decision-maker contacts tracked across these 44 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 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 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.