Company lists · Data refreshed November 2026
Top 16 Legacy system integration firms based in Australia
RevenueBase identified 352 company matches for legacy system integration firms associated with Australia as of November 2026 and tracks 7,128 professional contacts across them, including 1,843 with verified work emails. Sydney is the largest hub.
This list covers company matches for legacy system integration firms associated with Australia, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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.
The 16 largest legacy system integration firms based in Australia
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 832 contacts → | ||||
Exact match “NCS in Australia is reinventing technology services from the inside out.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 617 contacts → | ||||
Exact match “DXC Technology (NYSE: DXC) is a leading enterprise technology and innovation partner delivering software, services, and solutions to global enterprises and public sector…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 220 contacts → | ||||
Exact match “Unico is an Australian privately owned and operated technology services company making technology innovation simple.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 107 contacts → | ||||
Exact match “SYPAQ is an innovative engineering and systems integration company, committed to creating a world that works, awarded the Australian Financial Review's "Most Innovative Company"…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 75 contacts → | ||||
Exact match “DNX is an Australian modernisation transformation partner and trusted advisor helping organisations evolve with clarity and confidence.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 67 contacts → | ||||
Exact match “a23 is a straight-talking, Australian-owned IT consulting firm focused on what matters most to government and business.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 63 contacts → | ||||
Exact match “Leonardo, a UST company, operates in the Australia and New Zealand region.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 62 contacts → | ||||
Exact match “Since 2004 Intergy Consulting has been helping clients realise their business vision through delivering innovative, high quality, customised IT solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 59 contacts → | ||||
Exact match “At Iocane we work with you to understand your business goals and then apply the right combination of technology to deliver your outcome.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 47 contacts → | ||||
Exact match “At Olympus Technology Services, delivering IT Transformation is our business.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 40 contacts → | ||||
Exact match “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.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 39 contacts → | ||||
Exact match “DHCC Australia is an emerging provider of Information Technology services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 36 contacts → | ||||
Exact match “Advance Delivery Consulting (ADC) is a trusted IT consulting partner across Australia, APAC, and the Middle East, driving transformational business value through innovative…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 34 contacts → | ||||
Exact match “MAINFRAME IS AT OUR CORE ISI is an Australian mainframe expert distinguished by its surgical focus on mainframe technologies and a clear 30-year pedigree in mainframe…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 32 contacts → | ||||
Exact match “At Excite Cyber, we envision a world where businesses can fearlessly embrace technology and leverage the best cyber expertise for robust, outcome-focused solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 32 contacts → | ||||
Exact match “We deliver future proof software for organisations that rely on technology to enable their business.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “legacy system integration firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 16 of 352 legacy system integration firms based in Australia
See the full list, filter by size, metro and specialty, and access 1,843 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Legacy system integration firms based in Australia at a glance
As of Nov 6, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 352 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with Australia whose business descriptions match “legacy system integration firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- 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 displayed company carries at least one verified work email. RevenueBase tracks 1,843 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Legacy system integration firms by metro
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “legacy system integration firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many legacy system integration firms are there based in Australia?
RevenueBase identified 352 company matches for legacy system integration firms associated with Australia as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
NCS Group Australia tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most legacy system integration firms?
Sydney leads with 76 company records, followed by Melbourne (73) and Brisbane (20).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,843 professional contacts with verified work emails tracked across these 352 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 352 legacy system integration firms based in Australia. Start with a free account, no credit card.
Download this list →Related lists
Legacy system integration firms by geography
- Legacy system integration firms based in Buenos Aires, Argentina
- Legacy system integration firms based in Melbourne, Australia
- Legacy system integration firms based in Sydney, Australia
- Legacy system integration firms based in Dhaka, Bangladesh
- Legacy system integration firms based in Rio De Janeiro, Brazil
- Legacy system integration firms based in Sao Paulo, Brazil
- Legacy system integration firms based in Calgary, Canada
- Legacy system integration firms based in Montreal, Canada
- Legacy system integration firms based in Toronto, Canada
- Legacy system integration firms based in Santiago, Chile
- Legacy system integration firms based in Cairo, Egypt
- Legacy system integration firms based in Paris, France
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 SmartSearch, 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.
More company lists
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- New lists
- Legacy system integration firms based in Buenos Aires, Argentina
- Legacy system integration firms based in Melbourne, Australia
- Legacy system integration firms based in Sydney, Australia
- Legacy system integration firms based in Dhaka, Bangladesh
- Legacy system integration firms based in Rio De Janeiro, Brazil
- Legacy system integration firms based in Sao Paulo, Brazil
Company intelligence · public preview
Top 16 legacy system integration firms based in Australia
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 352 matching company records for legacy system integration firms based in Australia, with 7,128 tracked contacts and 1,843 verified work emails.
This public preview shows 16 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 16 legacy system integration firms based in Australia
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  NCS Group Australiancs.coHQ: Sydney, AustraliaReported employees: 1,001-5,000 | Sydney, Australia | 1,001-5,000 | Exact match | 832 contacts → |
“NCS in Australia is reinventing technology services from the inside out.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  DXC Technologydxc.comHQ: Macquarie Park, AustraliaReported employees: 10001+ | Macquarie Park, Australia | 10001+ | Exact match | 617 contacts → |
“DXC Technology (NYSE: DXC) is a leading enterprise technology and innovation partner delivering software, services, and solutions to global enterprises and public sector…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  UNICOunico.com.auHQ: Melbourne, AustraliaReported employees: 51-200 | Melbourne, Australia | 51-200 | Exact match | 220 contacts → |
“Unico is an Australian privately owned and operated technology services company making technology innovation simple.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Sypaq Systemssypaq.comHQ: Port Melbourne, AustraliaReported employees: 201-500 | Port Melbourne, Australia | 201-500 | Exact match | 107 contacts → |
“SYPAQ is an innovative engineering and systems integration company, committed to creating a world that works, awarded the Australian Financial Review's "Most Innovative Company"…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  DNX Solutionsdnx.solutionsHQ: Sydney, AustraliaReported employees: 51-200 | Sydney, Australia | 51-200 | Exact match | 75 contacts → |
“DNX is an Australian modernisation transformation partner and trusted advisor helping organisations evolve with clarity and confidence.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  A23a23.com.auHQ: Canberra, AustraliaReported employees: 51-200 | Canberra, Australia | 51-200 | Exact match | 67 contacts → |
“a23 is a straight-talking, Australian-owned IT consulting firm focused on what matters most to government and business.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Leonardoleonardo.com.auHQ: Melbourne, AustraliaReported employees: 51-200 | Melbourne, Australia | 51-200 | Exact match | 63 contacts → |
“Leonardo, a UST company, operates in the Australia and New Zealand region.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Intergy Consultingintergy.com.auHQ: North Sydney, AustraliaReported employees: 51-200 | North Sydney, Australia | 51-200 | Exact match | 62 contacts → |
“Since 2004 Intergy Consulting has been helping clients realise their business vision through delivering innovative, high quality, customised IT solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Iocaneiocane.com.auHQ: Black Forest, AustraliaReported employees: 51-200 | Black Forest, Australia | 51-200 | Exact match | 59 contacts → |
“At Iocane we work with you to understand your business goals and then apply the right combination of technology to deliver your outcome.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Olympus Technology Servicesolympustech.com.auHQ: Parramatta, AustraliaReported employees: 51-200 | Parramatta, Australia | 51-200 | Exact match | 47 contacts → |
“At Olympus Technology Services, delivering IT Transformation is our business.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Solistasolista.com.auHQ: Sydney, AustraliaReported employees: 11-50 | Sydney, Australia | 11-50 | Exact match | 40 contacts → |
“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.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Dhcc Australiadhcca.com.auHQ: Melbourne, AustraliaReported employees: 11-50 | Melbourne, Australia | 11-50 | Exact match | 39 contacts → |
“DHCC Australia is an emerging provider of Information Technology services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Advance Delivery Consultingad-consulting.com.auHQ: Sydney, AustraliaReported employees: 501-1,000 | Sydney, Australia | 501-1,000 | Exact match | 36 contacts → |
“Advance Delivery Consulting (ADC) is a trusted IT consulting partner across Australia, APAC, and the Middle East, driving transformational business value through innovative…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | ISI PTY LTDisi.com.au HQ: AustraliaReported employees: 51-200 | Australia | 51-200 | Exact match | 34 contacts → |
“MAINFRAME IS AT OUR CORE ISI is an Australian mainframe expert distinguished by its surgical focus on mainframe technologies and a clear 30-year pedigree in mainframe…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Excite Cyberexcitecyber.comHQ: North Sydney, AustraliaReported employees: 11-50 | North Sydney, Australia | 11-50 | Exact match | 32 contacts → |
“At Excite Cyber, we envision a world where businesses can fearlessly embrace technology and leverage the best cyber expertise for robust, outcome-focused solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Alembicalembic.com.auHQ: Sydney, AustraliaReported employees: 11-50 | Sydney, Australia | 11-50 | Exact match | 32 contacts → |
“We deliver future proof software for organisations that rely on technology to enable their business.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 16 of 352 company matches
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Legacy system integration firms: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
350 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 352 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Legacy system integration firms by metro
Questions about this company list
What does Exact match mean for legacy system integration firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many legacy system integration firms did RevenueBase find based in Australia?
The saved snapshot records 352 matching company records, 7,128 tracked contacts and 1,843 verified emails. The public preview displays 16 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Legacy system integration firms by geography
- Legacy system integration firms based in Buenos Aires, Argentina
- Legacy system integration firms based in Melbourne, Australia
- Legacy system integration firms based in Sydney, Australia
- Legacy system integration firms based in Dhaka, Bangladesh
- Legacy system integration firms based in Rio De Janeiro, Brazil
- Legacy system integration firms based in Sao Paulo, Brazil
- Legacy system integration firms based in Calgary, Canada
- Legacy system integration firms based in Montreal, Canada
- Legacy system integration firms based in Toronto, Canada
- Legacy system integration firms based in Santiago, Chile
- Legacy system integration firms based in Cairo, Egypt
- Legacy system integration firms based in Paris, France
Cite this list
RevenueBase Data Team. Top 16 legacy system integration firms based in Australia. Snapshot: November 6, 2026. https://revenuebase.ai/companies/legacy-system-integration-firms/australia.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Legacy system integration firms based in Buenos Aires, Argentina
- Legacy system integration firms based in Melbourne, Australia
- Legacy system integration firms based in Sydney, Australia
- Legacy system integration firms based in Dhaka, Bangladesh
- Legacy system integration firms based in Rio De Janeiro, Brazil
- Legacy system integration firms based in Sao Paulo, Brazil
Company intelligence · public preview
Top 16 legacy system integration firms based in Australia
RevenueBase records 352 matching company records for legacy system integration firms based in Australia, with 7,128 tracked contacts and 1,843 verified work emails.
This public preview shows 16 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 16 legacy system integration firms based in Australia
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | NCS Group Australiancs.co HQ: Sydney, AustraliaReported employees: 1,001-5,000 | Sydney, Australia | 1,001-5,000 | Exact match | 832 contacts → |
“NCS in Australia is reinventing technology services from the inside out.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | DXC Technologydxc.com HQ: Macquarie Park, AustraliaReported employees: 10001+ | Macquarie Park, Australia | 10001+ | Exact match | 617 contacts → |
“DXC Technology (NYSE: DXC) is a leading enterprise technology and innovation partner delivering software, services, and solutions to global enterprises and public sector…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | UNICOunico.com.au HQ: Melbourne, AustraliaReported employees: 51-200 | Melbourne, Australia | 51-200 | Exact match | 220 contacts → |
“Unico is an Australian privately owned and operated technology services company making technology innovation simple.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Sypaq Systemssypaq.com HQ: Port Melbourne, AustraliaReported employees: 201-500 | Port Melbourne, Australia | 201-500 | Exact match | 107 contacts → |
“SYPAQ is an innovative engineering and systems integration company, committed to creating a world that works, awarded the Australian Financial Review's "Most Innovative Company"…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | DNX Solutionsdnx.solutions HQ: Sydney, AustraliaReported employees: 51-200 | Sydney, Australia | 51-200 | Exact match | 75 contacts → |
“DNX is an Australian modernisation transformation partner and trusted advisor helping organisations evolve with clarity and confidence.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | A23a23.com.au HQ: Canberra, AustraliaReported employees: 51-200 | Canberra, Australia | 51-200 | Exact match | 67 contacts → |
“a23 is a straight-talking, Australian-owned IT consulting firm focused on what matters most to government and business.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Leonardoleonardo.com.au HQ: Melbourne, AustraliaReported employees: 51-200 | Melbourne, Australia | 51-200 | Exact match | 63 contacts → |
“Leonardo, a UST company, operates in the Australia and New Zealand region.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Intergy Consultingintergy.com.au HQ: North Sydney, AustraliaReported employees: 51-200 | North Sydney, Australia | 51-200 | Exact match | 62 contacts → |
“Since 2004 Intergy Consulting has been helping clients realise their business vision through delivering innovative, high quality, customised IT solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Iocaneiocane.com.au HQ: Black Forest, AustraliaReported employees: 51-200 | Black Forest, Australia | 51-200 | Exact match | 59 contacts → |
“At Iocane we work with you to understand your business goals and then apply the right combination of technology to deliver your outcome.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Olympus Technology Servicesolympustech.com.au HQ: Parramatta, AustraliaReported employees: 51-200 | Parramatta, Australia | 51-200 | Exact match | 47 contacts → |
“At Olympus Technology Services, delivering IT Transformation is our business.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Solistasolista.com.au HQ: Sydney, AustraliaReported employees: 11-50 | Sydney, Australia | 11-50 | Exact match | 40 contacts → |
“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.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Dhcc Australiadhcca.com.au HQ: Melbourne, AustraliaReported employees: 11-50 | Melbourne, Australia | 11-50 | Exact match | 39 contacts → |
“DHCC Australia is an emerging provider of Information Technology services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Advance Delivery Consultingad-consulting.com.au HQ: Sydney, AustraliaReported employees: 501-1,000 | Sydney, Australia | 501-1,000 | Exact match | 36 contacts → |
“Advance Delivery Consulting (ADC) is a trusted IT consulting partner across Australia, APAC, and the Middle East, driving transformational business value through innovative…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | ISI PTY LTDisi.com.au HQ: AustraliaReported employees: 51-200 | Australia | 51-200 | Exact match | 34 contacts → |
“MAINFRAME IS AT OUR CORE ISI is an Australian mainframe expert distinguished by its surgical focus on mainframe technologies and a clear 30-year pedigree in mainframe…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Excite Cyberexcitecyber.com HQ: North Sydney, AustraliaReported employees: 11-50 | North Sydney, Australia | 11-50 | Exact match | 32 contacts → |
“At Excite Cyber, we envision a world where businesses can fearlessly embrace technology and leverage the best cyber expertise for robust, outcome-focused solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Alembicalembic.com.au HQ: Sydney, AustraliaReported employees: 11-50 | Sydney, Australia | 11-50 | Exact match | 32 contacts → |
“We deliver future proof software for organisations that rely on technology to enable their business.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 16 of 352 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Legacy system integration firms: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
350 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 352 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Legacy system integration firms by metro
Questions about this company list
What does Exact match mean for legacy system integration firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many legacy system integration firms did RevenueBase find based in Australia?
The saved snapshot records 352 matching company records, 7,128 tracked contacts and 1,843 verified emails. The public preview displays 16 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
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Related lists
Legacy system integration firms by geography
- Legacy system integration firms based in Buenos Aires, Argentina
- Legacy system integration firms based in Melbourne, Australia
- Legacy system integration firms based in Sydney, Australia
- Legacy system integration firms based in Dhaka, Bangladesh
- Legacy system integration firms based in Rio De Janeiro, Brazil
- Legacy system integration firms based in Sao Paulo, Brazil
- Legacy system integration firms based in Calgary, Canada
- Legacy system integration firms based in Montreal, Canada
- Legacy system integration firms based in Toronto, Canada
- Legacy system integration firms based in Santiago, Chile
- Legacy system integration firms based in Cairo, Egypt
- Legacy system integration firms based in Paris, France
Cite this list
RevenueBase Data Team. Top 16 legacy system integration firms based in Australia. Snapshot: November 6, 2026. https://revenuebase.ai/companies/legacy-system-integration-firms/australia.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Legacy system integration firms based in Buenos Aires, Argentina
- Legacy system integration firms based in Melbourne, Australia
- Legacy system integration firms based in Sydney, Australia
- Legacy system integration firms based in Dhaka, Bangladesh
- Legacy system integration firms based in Rio De Janeiro, Brazil
- Legacy system integration firms based in Sao Paulo, Brazil