Company lists · Data refreshed September 2026

Top 25 Defense software development companies based in Australia

Name: Defense software development companies based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 43 companies tracked

RevenueBase identified 43 defense software development companies headquartered in Australia as of September 2026 and tracks 2,080 professional contacts across them, including 599 with verified work emails and 131 with mobile numbers. Canberra is the largest hub.

This list covers defense software development companies headquartered in 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 1, 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 RevenueBase Smart Search rating on every row Refreshed Sep 1, 2026 86% judged on-target in blind review

43Companies

2,080Contacts tracked

599Verified emails

131Mobile numbers

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The 25 largest defense software development companies based in Australia

Ranked by team size

Top 25 of 43 defense software development companies based in Australia, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to defense software development 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	Leidos Australia	Partial evidence	Scoresby, Australia	1,001-5,000	965 contacts →
	Partial evidence “Leidos is a Fortune 500® innovation company working to solve the world’s toughest challenges in government, intelligence, defence, aviation, border protection and health markets.” Source: RevenueBase Database · checked Sep 1, 2026
2	4c Strategies	Strong evidence	Brisbane City, Australia	201-500	214 contacts →
	Strong evidence “4C Strategies is the leading provider of defence training management software and a trusted partner in building resilience.” Source: RevenueBase Database · checked Sep 1, 2026
3	Aurizn	Partial evidence	Adelaide, Australia	201-500	157 contacts →
	Partial evidence “Servicing Defence and Enterprise with our unique expertise in #AI, Advanced Sensing and #Simulation, Aurizn’s purpose is to push the boundaries of the known to create a more…” Source: RevenueBase Database · checked Sep 1, 2026
4	Thomas Global Systems	Partial evidence	Sydney Olympic Park, Australia	51-200	96 contacts →
	Partial evidence “Thomas Global Systems is an industry leader in the design, production, and support of innovative electronic systems solutions for aerospace and defense applications.” Source: RevenueBase Database · checked Sep 1, 2026
5	AVI PTY LTD	Partial evidence	Symonston, Australia	51-200	59 contacts →
	Partial evidence “AVI provides technology-based solutions to government, defence, mining and corporate communities.” Source: RevenueBase Database · checked Sep 1, 2026
6	C4i	Indirect evidence	Melbourne, Australia	51-200	59 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 1, 2026
7	Simcentric	Indirect evidence	Albury, Australia	51-200	56 contacts →
	Indirect evidence “SimCentric is a technology company focused on transforming training, safety and operational decision making through innovation.” Source: RevenueBase Database · checked Sep 1, 2026
8	Acacia Systems	Strong evidence	Hendon, Australia	51-200	44 contacts →
	Strong evidence “Supporting the Australian Defence Force since 1992, Acacia is a leading Australian defence software and systems company engaged primarily in developing advanced mission management…” Source: RevenueBase Database · checked Sep 1, 2026
9	Bluerydge	Indirect evidence	Fyshwick, Australia	51-200	39 contacts →
	Indirect evidence “Bluerydge delivers mission-secure capability, specialising in Cybersecurity, Technology, Artificial Intelligence (AI), and Robotics.” Source: RevenueBase Database · checked Sep 1, 2026
10	Softel Systems	Indirect evidence	Melbourne, Australia	11-50	38 contacts →
	Indirect evidence “With over 20 years in the security market for IT and Telecommunications networks, Softel has naturally migrated these skills into the Cybersecurity challenges of today.” Source: RevenueBase Database · checked Sep 1, 2026
11	Rfteq PTY LTD	Partial evidence	Torrensville, Australia	11-50	22 contacts →
	Partial evidence “RFTEQ was founded in 2017 by partners with over 150 years of combined extensive global experience in the fields of defence related Electronic Warfare (EW), Force Protection…” Source: RevenueBase Database · checked Sep 1, 2026
12	X-Rd	Partial evidence	Canberra, Australia	11-50	21 contacts →
	Partial evidence “x-RD is an award-winning Australian technology company that specialises in secure applications and platforms, systems integration and AI products and services for Defence…” Source: RevenueBase Database · checked Sep 1, 2026
13	Advanced Design Technology PTY LTD	Indirect evidence	Canberra, Australia	11-50	15 contacts →
	Indirect evidence “ADT designs, develops and manufactures complex electronic systems.” Source: RevenueBase Database · checked Sep 1, 2026
14	Cognitive Advantage	Indirect evidence	Braddon, Australia	1-10	14 contacts →
	Indirect evidence “Cognitive Advantage is a boutique technology solution provider to government and enterprise, specialising in mobile communication, secure networking, and distributed computing…” Source: RevenueBase Database · checked Sep 1, 2026
15	Temsconsu	Partial evidence	Brisbane, Australia	11-50	8 contacts →
	Partial evidence “TEMSCONSU is a software engineering firm/developer company that now specialises or has found its niche in developing/implementing innovative & disruptive Cyber Security and…” Source: RevenueBase Database · checked Sep 1, 2026
16	Penten	Partial evidence	Australia	51-200	7 contacts →
	Partial evidence “Penten is an Australian-owned, cyber technology business, delivering new future cyber technologies to enable defence and government.” Source: RevenueBase Database · checked Sep 1, 2026
17	Fulcrum Design	Strong evidence	Canberra, Australia	11-50	5 contacts →
	Strong evidence “Fulcrum Design is an Australian owned and operated company specialising in computer systems research, software development, and operational assurance for our clients across the…” Source: RevenueBase Database · checked Sep 1, 2026
18	Ebor Computing	Strong evidence	Australia	11-50	5 contacts →
	Strong evidence “Ebor Computing creates high quality scientific and technical software solutions and specialist hardware systems for Defence, Government and Commercial clients.” Source: RevenueBase Database · checked Sep 1, 2026
19	Codehaus PTY LTD	Partial evidence	Mawson Lakes, Australia	1-10	5 contacts →
	Partial evidence “Codehaus is an Adelaide-based software engineering company dedicated to delivering innovative and secure technology solutions to the Australian public sector.” Source: RevenueBase Database · checked Sep 1, 2026
20	Astute Systems	Indirect evidence	Fortitude Valley, Australia	1-10	4 contacts →
	Indirect evidence “Astute Systems is a pioneering force in militarized, AI-enabled computing solutions, engineered for the most demanding environments.” Source: RevenueBase Database · checked Sep 1, 2026
21	Athlan Technologies	Indirect evidence	Melbourne, Australia	11-50	4 contacts →
	Indirect evidence “ATHLAN Technologies is a next-generation technology and innovation company building secure, intelligent, and resilient digital ecosystems.” Source: RevenueBase Database · checked Sep 1, 2026
22	Digital Dilemma	Strong evidence	Sydney, Australia	1-10	3 contacts →
	Strong evidence “Digital Dilemma has been building software for defence, government and enterprise for the past 15 ears.” Source: RevenueBase Database · checked Sep 1, 2026
23	Hillworth Solutions	Strong evidence	Adelaide, Australia	1-10	2 contacts →
	Strong evidence “At Hillworth Solutions, we embody the spirit of Australian innovation, offering bespoke IT services and software development that is proudly home-grown and reinvested back into…” Source: RevenueBase Database · checked Sep 1, 2026
24	Congruent Labs PTY LTD	Strong evidence	Canberra, Australia	1-10	2 contacts →
	Strong evidence “Congruent Labs offers specialised software development solutions and tailored information security services.” Source: RevenueBase Database · checked Sep 1, 2026
25	Compile	Indirect evidence	Gold Coast, Australia	1-10	2 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 1, 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: defense software development 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 defense software development companies.
Partial evidence: Its own public description names part of defense software development companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name defense software development 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 43 defense software development companies based in Australia

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Defense software development companies based in Australia at a glance

As of Sep 1, 2026

28.8%Verified-email coverage

6.3%Mobile-number coverage

48.4Average contacts per company

11-50Median size (employees)

14.0%Largest-city concentration · Canberra

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

10001+

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 defense software development 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 Australia whose own description of what they do matches “defense software development 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 defense software development 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 defense software development companies, and records with no verified work email. Companies headquartered outside Australia 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, 599 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 1, 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 defense software development 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 defense software development companies are there based in Australia?

RevenueBase identified 43 defense software development companies headquartered in 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?

Leidos Australia, headquartered in Scoresby, tops this list with the largest team on record.

Which city has the most defense software development companies?

Canberra leads with 6 headquartered companies, followed by Melbourne (5) and Adelaide (4).

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 599 verified decision-maker contacts tracked across these 43 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 1, 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.