Company lists · Data refreshed September 2026

Top 25 Secure software development companies based in Australia

Name: Secure 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 6, 2026 669 companies tracked

RevenueBase identified 669 secure software development companies headquartered in Australia as of September 2026 and tracks 4,976 professional contacts across them, including 1,874 with verified work emails and 249 with mobile numbers. Sydney is the largest hub.

This list covers secure 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, how directly it supports the match, and when it was last checked. Data refreshed September 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.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 6, 2026 86% judged on-target in blind review

669Companies

4,976Contacts tracked

1,874Verified emails

249Mobile numbers

Explore all 669 companies → Free signup · no credit card · 500 free credits

The 25 largest secure software development companies based in Australia

Ranked by team size

Top 25 of 669 secure software development companies based in Australia, ranked by team size, largest first. Data refreshed Sep 6, 2026. Evidence rates how directly each company's own description names secure software development companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Centorrino TechnologiesPartial evidence	Coburg, AustraliaHQ checked Sep 6, 2026	201-500	352
	“We are an Australian-owned, full-service ICT Solutions and Cyber Security provider with a locally based team of over 450 passionate Aussies.” Source: company website · checked Sep 6, 2026
2	Crystal DeltaPartial evidence	Melbourne, AustraliaHQ checked Sep 6, 2026	51-200	155
	“Explore new frontiers, uncover value from core business and build secure, scalable digital foundations through our transformative Technology Solutions.” Source: company website · checked Sep 6, 2026
3	Triskele LabsIndirect evidence	Melbourne, AustraliaHQ checked Sep 6, 2026	51-200	123
	“Triskele Labs is one of Australia’s fastest growing cybersecurity companies.” Source: company website · checked Sep 6, 2026
4	Ever NimblePartial evidence	West Perth, AustraliaHQ checked Sep 6, 2026	51-200	102
	“We are your IT & Cyber Security partners.” Source: company website · checked Sep 6, 2026
5	Kaine Mathrick TechIndirect evidence	Port Melbourne, AustraliaHQ checked Sep 6, 2026	51-200	93
	“Australia’s cyber-first Managed Service Provider and true technology partner.” Source: company website · checked Sep 6, 2026
6	Swivel TechPartial evidence	Cremorne, AustraliaHQ checked Sep 6, 2026	51-200	69
	“SwivelTech is all about pushing boundaries to bring you innovative, world-class software products and strategy consultation.” Source: company website · checked Sep 6, 2026
7	Intergy ConsultingIndirect evidence	North Sydney, AustraliaHQ checked Sep 6, 2026	51-200	63
	“Since 2004 Intergy Consulting has been helping clients realise their business vision through delivering innovative, high quality, customised IT solutions.” Source: company website · checked Sep 6, 2026
8	A23Indirect evidence	Canberra, AustraliaHQ checked Sep 6, 2026	51-200	62
	“a23 is a straight-talking, Australian-owned IT consulting firm focused on what matters most to government and business.” Source: company website · checked Sep 6, 2026
9	SkillfieldPartial evidence	Melbourne, AustraliaHQ checked Sep 6, 2026	51-200	62
	“Skillfield is a Melbourne-born Cyber Security, AI and big data solutions provider and professional services consultancy.” Source: company website · checked Sep 6, 2026
10	3columnsPartial evidence	502, AustraliaHQ checked Sep 6, 2026	51-200	61
	“Discover 3Columns, your premier destination for cutting-edge cyber security solutions.” Source: company website · checked Sep 6, 2026
11	AmpionIndirect evidence	Melbourne, AustraliaHQ checked Sep 6, 2026	501-1,000	61
	“Welcome to Ampion.” Source: company website · checked Sep 6, 2026
12	DeploypartnersIndirect evidence	North Sydney, AustraliaHQ checked Sep 6, 2026	51-200	51
	“DeployPartners offer unique values and benefits that enable our clients and partners to differentiate on customer service.” Source: company website · checked Sep 6, 2026
13	Dimiya TechPartial evidence	Melbourne, AustraliaHQ checked Sep 6, 2026	51-200	50
	“DIMIYA Tech is a Melbourne, Australia based- global Cybersecurity and IT services provider supporting organizations that require secure, scalable, and high-performance technology…” Source: company website · checked Sep 6, 2026
14	Seccom GlobalPartial evidence	Sydney, AustraliaHQ checked Sep 6, 2026	11-50	41
	“Seccom Global - The Cyber Security Company Providing excellence in service to educate, connect and protect your business Founded in 2003, Seccom Global is recognised as a leader…” Source: company website · checked Sep 6, 2026
15	BluerydgePartial evidence	Fyshwick, AustraliaHQ checked Sep 6, 2026	51-200	41
	“Bluerydge delivers mission-secure capability, specialising in Cybersecurity, Technology, Artificial Intelligence (AI), and Robotics.” Source: company website · checked Sep 6, 2026
16	Devops1Partial evidence	Sydney, AustraliaHQ checked Sep 6, 2026	51-200	40
	“At DevOps1, our technologists are dedicated to using their collective experience and knowledge of modern engineering best practices to deliver effective, secure, and…” Source: company website · checked Sep 6, 2026
17	Softel SystemsPartial evidence	Melbourne, AustraliaHQ checked Sep 6, 2026	11-50	37
	“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: company website · checked Sep 6, 2026
18	9t5 PTY LTDStrong evidence	Sydney, AustraliaHQ checked Sep 6, 2026	11-50	37
	“9T5 began as an IT Consulting and Software Development company in 2017.” Source: company website · checked Sep 6, 2026
19	IonizePartial evidence	Canberra, AustraliaHQ checked Sep 6, 2026	51-200	35
	“When it comes to security there's no shortage of companies ready to tell you about your vulnerabilities.” Source: company website · checked Sep 6, 2026
20	AstralasIndirect evidence	Cremorne, AustraliaHQ checked Sep 6, 2026	51-200	35
	“Good people solving important problems.” Source: company website · checked Sep 6, 2026
21	CyberxcelIndirect evidence	Brisbane, AustraliaHQ checked Sep 6, 2026	n/a	33
	“Founded by Sohail Ershadi, a distinguished cybersecurity expert with over a decade of experience in the IT industry, CyberXcel has rapidly emerged as a leader in cybersecurity…” Source: company website · checked Sep 6, 2026
22	Division 5Partial evidence	Brisbane, AustraliaHQ checked Sep 6, 2026	11-50	32
	“Division 5 is focused on building long-term relationships with our clients as their trusted cyber security advisor.” Source: company website · checked Sep 6, 2026
23	Excite CyberIndirect evidence	North Sydney, AustraliaHQ checked Sep 6, 2026	11-50	31
	“At Excite Cyber, we envision a world where businesses can fearlessly embrace technology and leverage the best cyber expertise for robust, outcome-focused solutions.” Source: company website · checked Sep 6, 2026
24	NUEVAIndirect evidence	Sydney, AustraliaHQ checked Sep 6, 2026	51-200	30
	“At Nueva, we aim to create a safer digital environment by providing innovative and customised cybersecurity solutions for our clients.” Source: company website · checked Sep 6, 2026
25	Huon ITIndirect evidence	North Ryde, AustraliaHQ checked Sep 6, 2026	51-200	29
	“As an Australian-based IT consultancy and proud member of the Kyocera Group, Huon IT has been delivering exceptional IT solutions nationwide for over 35 years.” Source: company website · checked Sep 6, 2026

Showing 25 of 669 secure software development companies based in Australia

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Secure software development companies based in Australia at a glance

As of Sep 6, 2026

1-10Median size (employees)

SydneyLargest hub · 133 HQs

249Contacts with mobile numbers

Sep 6, 2026Data refreshed

Companies by employee count

1-10

431

11-50

179

51-200

201-500

501-1,000

1,001-5,000

Verified emails by last verification

0–30

1,736

31–60

133

61–90

90–180

180+

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 secure software development companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Australia whose own description of what they do matches “secure software development companies”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among secure 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 an evidence 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, 1,874 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 6, 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.

Secure software development companies by metro

Frequently asked

How many secure software development companies are there based in Australia?

RevenueBase identified 669 secure 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?

Centorrino Technologies, headquartered in Coburg, tops this list with the largest team on record.

Which city has the most secure software development companies?

Sydney leads with 133 headquartered companies, followed by Melbourne (131) and Brisbane (49).

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 1,874 verified decision-maker contacts tracked across these 669 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 6, 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 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.