Company lists · Data refreshed September 2026

Top 25 Legacy system modernization consultancies based in Sydney, Australia

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 78 companies tracked

RevenueBase identified 78 legacy system modernization consultancies headquartered in Sydney, Australia as of September 2026 and tracks 504 professional contacts across them, including 160 with verified work emails. Across Australia, Sydney is the largest hub for this category.

This list covers legacy system modernization consultancies 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 28, 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 28, 2026 86% judged on-target in blind review

78Companies

504Contacts tracked

160Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest legacy system modernization consultancies based in Sydney, Australia

Ranked by team size

Top 25 of 78 legacy system modernization consultancies based in Sydney, Australia, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to legacy system modernization consultancies: 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	DNX Solutions	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 2026	51-200	66 contacts →
	Indirect evidence “DNX is an Australian modernisation transformation partner and trusted advisor helping organisations evolve with clarity and confidence.” Source: RevenueBase Database · checked Sep 28, 2026
2	Sazae PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 2026	51-200	35 contacts →
	Indirect evidence “About Sazae Pty Ltd Sazae Pty Ltd is a global IT consulting company headquartered in Sydney, with offices in Australia, Japan, and Vietnam.” Source: RevenueBase Database · checked Sep 28, 2026
3	Solista	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 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 28, 2026
4	Advance Delivery Consulting	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 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 28, 2026
5	Datalynx	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 2026	11-50	25 contacts →
	Indirect evidence “Datalynx is an Australian company providing innovative, world-class enterprise data management software.” Source: RevenueBase Database · checked Sep 28, 2026
6	Star X Technology Solutions PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 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 28, 2026
7	Strong Solutions	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 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 28, 2026
8	AUP IT	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 2026	11-50	21 contacts →
	Indirect evidence “AUP IT has over two decades of experience in solving IT problems for all sorts of organisations whether they are small or large, local government bodies, councils or corporations.” Source: RevenueBase Database · checked Sep 28, 2026
9	Nikqik Technologies	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 2026	11-50	18 contacts →
	Indirect evidence “Welcome to Nikqik Technologies, Where Innovation Meets Execution.” Source: RevenueBase Database · checked Sep 28, 2026
10	Storata Business Solutions	Partial evidence	Sydney, AustraliaHQ checked Sep 28, 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 28, 2026
11	Implementium	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “Implementium is an information technology advisory/consulting organisation specialising in the following domains of expertise- Enterprise Applications i.e.” Source: RevenueBase Database · checked Sep 28, 2026
12	33bondi	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 2026	11-50	11 contacts →
	Indirect evidence “At 33BONDI, we help organisations modernise with purpose.” Source: RevenueBase Database · checked Sep 28, 2026
13	Trueit Consulting	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 2026	11-50	11 contacts →
	Indirect evidence “TrueIT Consulting provides Strategic IT Consulting & Solutions in the area of Cloud Computing, Infrastructure Solutions & Managed Services.” Source: RevenueBase Database · checked Sep 28, 2026
14	Leading Edge Global	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 2026	11-50	11 contacts →
	Indirect evidence “Leading Edge Global is recognised as the industry leaders in Business Implementations and Transformations, specialising in Project Delivery, Operational Readiness and Change…” Source: RevenueBase Database · checked Sep 28, 2026
15	Akkadian Systems	Partial evidence	Sydney, AustraliaHQ checked Sep 28, 2026	1-10	8 contacts →
	Partial evidence “Akkadian Systems bridges the gap between human expertise and integrity-driven innovation.” Source: RevenueBase Database · checked Sep 28, 2026
16	Nexus IT & Communications Solutions	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 2026	11-50	5 contacts →
	Indirect evidence “Nexus is a leading IT consultancy based in Sydney, Australia.” Source: RevenueBase Database · checked Sep 28, 2026
17	Zithera IT Consulting	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 2026	11-50	4 contacts →
	Indirect evidence “At Zithera, we provide our clients with expert advice, resources, and services to help them maximise their technology investments.” Source: RevenueBase Database · checked Sep 28, 2026
18	Cape Digital Solutions	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “Our services are focused on making a business impact with IT solutions.” Source: RevenueBase Database · checked Sep 28, 2026
19	Future State Systems	Partial evidence	Sydney, AustraliaHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “Future State Systems (FSS) helps organisations enhance, optimise and automate their processes so that they can increase efficiency, reduce costs and improve service to their…” Source: RevenueBase Database · checked Sep 28, 2026
20	Ingenic Australia	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 2026	51-200	3 contacts →
	Indirect evidence “We provide consultation, design, and implementation services using modern industry best practices in data, cloud, and software engineering.” Source: RevenueBase Database · checked Sep 28, 2026
21	www.theitpro.tech	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 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 28, 2026
22	Sonit Group	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 2026	1-10	3 contacts →
	Indirect evidence “Sonit Group provide trusted people, proven technology and business solutions to enable organisations to deliver on their strategic objectives.” Source: RevenueBase Database · checked Sep 28, 2026
23	GET With IT	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 2026	11-50	2 contacts →
	Indirect evidence “Our mission is to empower businesses with innovative and comprehensive solutions that unleash their true potential.” Source: RevenueBase Database · checked Sep 28, 2026
24	Tech Pathfinder	Indirect evidence	Sydney, AustraliaHQ checked Sep 28, 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 28, 2026
25	Addology	Partial evidence	Sydney, AustraliaHQ checked Sep 28, 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 28, 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 consultancies. 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 consultancies.
Partial evidence: Its own public description names part of legacy system modernization consultancies, 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 consultancies. 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 78 legacy system modernization consultancies based in Sydney, Australia

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 160 reachable decision-makers.

Free signup · no credit card

View the full list →

Legacy system modernization consultancies based in Sydney, Australia at a glance

As of Sep 28, 2026

31.7%Verified-email coverage

6.5Average contacts per company

1-10Median size (employees)

Sep 28, 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 78 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 consultancies, 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 consultancies”. 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 consultancies), 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 consultancies, 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, 160 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 28, 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 consultancies by metro in Australia

Legacy system modernization consultancies in Melbourne63

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 consultancies, 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 consultancies are there based in Sydney, Australia?

RevenueBase identified 78 legacy system modernization consultancies 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?

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

Which city in Australia has the most legacy system modernization consultancies?

Sydney leads Australia with 78 headquartered companies, followed by Melbourne (63) and Brisbane (21).

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 160 verified decision-maker contacts tracked across these 78 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 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 78 legacy system modernization consultancies based in Sydney, Australia. Start with a free account, no credit card.

Download this list →

Related lists

Legacy system modernization consultancies by geography

Browse the directory

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.