Company lists · Data refreshed September 2026

Top 25 Legacy system modernization based in Sydney, Australia

Name: Legacy system modernization based in Sydney, Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 69 companies tracked

RevenueBase identified 69 legacy system modernization headquartered in Sydney, Australia as of September 2026 and tracks 518 professional contacts across them, including 173 with verified work emails. Melbourne is the largest hub.

This list covers legacy system modernization headquartered in Sydney, Australia, 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

69Companies

518Contacts tracked

173Verified emails

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The 25 largest legacy system modernization based in Sydney, Australia

Ranked by team size

Top 25 of 69 legacy system modernization based in Sydney, Australia, 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: 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	Experteq	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	51-200	90 contacts →
	Indirect evidence “With a proven track record of 30 years, experteq is a proudly Australian IT company that combines the strengths of two storied brands – TAS and Experteq – to deliver outstanding…” Source: RevenueBase Database · checked Sep 20, 2026
2	Solista	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	35 contacts →
	Indirect evidence “2018 - ARN Innovation Award - Customer Value 2017 -#22 Deloitte Tech Fast 50 2017 #10 CRN Fast 50 2016 #4 CRN Fast 50 We turn IT into a business asset, not a liability.” Source: RevenueBase Database · checked Sep 20, 2026
3	Advance Delivery Consulting	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	501-1,000	32 contacts →
	Indirect evidence “Advance Delivery Consulting (ADC) is a trusted IT consulting partner across Australia, APAC, and the Middle East, driving transformational business value through innovative…” Source: RevenueBase Database · checked Sep 20, 2026
4	Gammer Group	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	25 contacts →
	Indirect evidence “Simplifying IT solutions that work for your business.” Source: RevenueBase Database · checked Sep 20, 2026
5	Star X Technology Solutions PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	24 contacts →
	Indirect evidence “Star X Technology is a Sydney-based company with around 10 years of experience.” Source: RevenueBase Database · checked Sep 20, 2026
6	Strong Solutions	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	22 contacts →
	Indirect evidence “Strong Solutions' mission is to provide best practice innovative IT solutions and services to our clients acting as the technology enabler for realisation of their business goals.” Source: RevenueBase Database · checked Sep 20, 2026
7	Empire Technologies	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	21 contacts →
	Indirect evidence “At Empire Technologies, our unwavering dedication to delivering technology solutions can help you drive business success.” Source: RevenueBase Database · checked Sep 20, 2026
8	Fooforce PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	19 contacts →
	Indirect evidence “FooForce is a full-service strategic IT consultancy that plans, customises and manages clients’ IT needs.” Source: RevenueBase Database · checked Sep 20, 2026
9	Nikqik Technologies	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	18 contacts →
	Indirect evidence “Welcome to Nikqik Technologies, Where Innovation Meets Execution.” Source: RevenueBase Database · checked Sep 20, 2026
10	Storata Business Solutions	Partial evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	18 contacts →
	Partial evidence “Storata is an Australian Systems Integrator and Business Consulting who specialise in the lean digital transformation of enterprise systems and processes.” Source: RevenueBase Database · checked Sep 20, 2026
11	Logicore	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	15 contacts →
	Indirect evidence “Founded in 2013 \| Headquartered in Sydney Operating across APAC, EMEA and the Americas Delivering certainty in Enterprise Architecture, Integration and Digital Transformation What…” Source: RevenueBase Database · checked Sep 20, 2026
12	Insight Integration Technology PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	12 contacts →
	Indirect evidence “Better IT begins here… If poorly performing IT is punishing your business, then talk to us.” Source: RevenueBase Database · checked Sep 20, 2026
13	The Ardor	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	9 contacts →
	Indirect evidence “At The Ardor, we specialize in delivering innovative IT services and consulting solutions that empower businesses to grow and succeed.With over 15 years of experience, our…” Source: RevenueBase Database · checked Sep 20, 2026
14	Waterstons Australia	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	8 contacts →
	Indirect evidence “Technology should empower your business, not slow it down.” Source: RevenueBase Database · checked Sep 20, 2026
15	Assistech PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	1-10	8 contacts →
	Indirect evidence “Assistech is a Sydney-based IT Services Company, dedicated to providing swift and reliable IT solutions to businesses across various sizes and industries.” Source: RevenueBase Database · checked Sep 20, 2026
16	6r Retail PTY LTD	Partial evidence	Sydney, AustraliaHQ checked Sep 20, 2026	1-10	7 contacts →
	Partial evidence “We deliver systems projects that transform retail operations.” Source: RevenueBase Database · checked Sep 20, 2026
17	DC Encompass	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	1-10	6 contacts →
	Indirect evidence “Empowering Your Business with Seamless IT Solutions Technology should empower, not complicate.” Source: RevenueBase Database · checked Sep 20, 2026
18	Nexus IT & Communications Solutions	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	5 contacts →
	Indirect evidence “Nexus is a leading IT consultancy based in Sydney, Australia.” Source: RevenueBase Database · checked Sep 20, 2026
19	Expediteit PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	1-10	4 contacts →
	Indirect evidence “ExpediteIT is an Australian-owned company who are committed to the success of its business partners.” Source: RevenueBase Database · checked Sep 20, 2026
20	Herotech	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	1-10	4 contacts →
	Indirect evidence “At HeroTech, we are passionate about Information Technology and how it can transform the way businesses operate and grow.” Source: RevenueBase Database · checked Sep 20, 2026
21	Calypsi	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	1-10	3 contacts →
	Indirect evidence “Welcome to Calypsi IT Company Page.” Source: RevenueBase Database · checked Sep 20, 2026
22	www.theitpro.tech	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	1-10	3 contacts →
	Indirect evidence “Greetings, I’m Jace, an independent IT consultant based in Sydney with 30 years of industry experience.” Source: RevenueBase Database · checked Sep 20, 2026
23	Itechnique Australia	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	1-10	2 contacts →
	Indirect evidence “ITechnique is an Australian owned and operated IT services company for small and medium-sized businesses.” Source: RevenueBase Database · checked Sep 20, 2026
24	Tech Pathfinder	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	1-10	2 contacts →
	Indirect evidence “We are a leading technology advisory consulting firm based in Australia, empowering organizations to leverage the full potential of their technology investments.” Source: RevenueBase Database · checked Sep 20, 2026
25	Addology	Partial evidence	Sydney, AustraliaHQ checked Sep 20, 2026	1-10	2 contacts →
	Partial evidence “We are an energetic, pragmatic, “hands-on” team of leading IT and business systems professionals, with a refreshing, focused approach to delivering reliable, robust business…” 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. 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.
Partial evidence: Its own public description names part of legacy system modernization, 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. 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 69 legacy system modernization based in Sydney, Australia

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Legacy system modernization based in Sydney, Australia at a glance

As of Sep 20, 2026

33.4%Verified-email coverage

7.5Average contacts per company

1-10Median size (employees)

105.8%Largest-city concentration · Melbourne

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 69 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, 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 Sydney, Australia whose own description of what they do matches “legacy system modernization”. 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), 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, and records with no verified work email. Companies headquartered outside Sydney 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, 173 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 by metro in Australia

Legacy system modernization in Melbourne73
Legacy system modernization in Sydney69
Legacy system modernization in Brisbane27

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, 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 are there based in Sydney, Australia?

RevenueBase identified 69 legacy system modernization headquartered in Sydney, Australia 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?

Experteq, headquartered in Sydney, tops this list with the largest team on record.

Which city has the most legacy system modernization?

Melbourne leads with 73 headquartered companies, followed by Sydney (69) and Brisbane (27).

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 173 verified decision-maker contacts tracked across these 69 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.