Company lists · Data refreshed September 2026

Top 25 Custom software development consulting firms based in Sydney, Australia

Name: Custom software development consulting firms based in Sydney, Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 599 companies tracked

RevenueBase identified 599 custom software development consulting firms headquartered in Sydney, Australia as of September 2026 and tracks 5,191 professional contacts across them, including 1,280 with verified work emails. Across Australia, Sydney is the largest hub for this category.

This list covers custom software development consulting firms 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 24, 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 24, 2026 86% judged on-target in blind review

599Companies

5,191Contacts tracked

1,280Verified emails

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The 25 largest custom software development consulting firms based in Sydney, Australia

Ranked by team size

Top 25 of 599 custom software development consulting firms based in Sydney, Australia, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to custom software development consulting firms: 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	NRI Australia & NEW Zealand	Indirect evidence	Sydney, AustraliaHQ checked Sep 24, 2026	1,001-5,000	711 contacts →
	Indirect evidence “As a trusted end-to-end digital partner, we design, build, and manage IT solutions that turn bold visions into reality and set new standards of excellence for our clients.” Source: RevenueBase Database · checked Sep 24, 2026
2	Katzion A Globallogic Company	Partial evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	143 contacts →
	Partial evidence “We are highly trained and motivated professionals who thrive on our customer success stories.” Source: RevenueBase Database · checked Sep 24, 2026
3	Itelasoft	Indirect evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	141 contacts →
	Indirect evidence “iTelaSoft is a ISO/IEC 27001:2022 accredited trusted technology partner delivering high-impact digital solutions across Australia, the UK, and APAC.” Source: RevenueBase Database · checked Sep 24, 2026
4	BILUE	Indirect evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	94 contacts →
	Indirect evidence “Bilue partners with ambitious organisations to design and engineer digital products that are built right, the first time.” Source: RevenueBase Database · checked Sep 24, 2026
5	Wild Tech	Indirect evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	77 contacts →
	Indirect evidence “With real-world experience, a global team, and the trust of local clients, we’re the end-to-end technology partner businesses rely on to turn bold ideas into powerful results.” Source: RevenueBase Database · checked Sep 24, 2026
6	Webential	Partial evidence	Sydney, AustraliaHQ checked Sep 24, 2026	11-50	75 contacts →
	Partial evidence “Webential is a driving-edge web design, development, and digital marketing agency with a group of similar-minded digital creatives who believe in traveling that extra mile to…” Source: RevenueBase Database · checked Sep 24, 2026
7	Appello	Partial evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	57 contacts →
	Partial evidence “Appello is a global digital product development company headquartered in Sydney.” Source: RevenueBase Database · checked Sep 24, 2026
8	Bigger	Indirect evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	57 contacts →
	Indirect evidence “Enterprise-grade teams.” Source: RevenueBase Database · checked Sep 24, 2026
9	Eritheia Labs	Strong evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	48 contacts →
	Strong evidence “Eritheia Labs is a Australia & Pakistan based IT, Software Development, and Managed Services Company that consults with top organizations to maximize their success.” Source: RevenueBase Database · checked Sep 24, 2026
10	Software At Scale	Indirect evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	46 contacts →
	Indirect evidence “A leading technology consultancy that empowers businesses with comprehensive solutions for their digital transformation.” Source: RevenueBase Database · checked Sep 24, 2026
11	Digitalrooar	Partial evidence	Sydney, AustraliaHQ checked Sep 24, 2026	11-50	44 contacts →
	Partial evidence “From web development to building a smart and creative solution, we cater to all your needs with our groundbreaking team and tools.” Source: RevenueBase Database · checked Sep 24, 2026
12	Partner 2 Simplify P2s	Indirect evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	42 contacts →
	Indirect evidence “Ideate, Inspire, Innovate, Implement Partner 2 Simplify (P2S) is a global IT services company simplifying digital transformation for organisations across Australia, India, and the…” Source: RevenueBase Database · checked Sep 24, 2026
13	NET Fusion Technology	Indirect evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	42 contacts →
	Indirect evidence “Unlock the full potential of your small business with Net Fusion Technology (NFT), the ultimate all-in-one solution.” Source: RevenueBase Database · checked Sep 24, 2026
14	Devops1	Indirect evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	40 contacts →
	Indirect evidence “At DevOps1, our technologists are dedicated to using their collective experience and knowledge of modern engineering best practices to deliver effective, secure, and…” Source: RevenueBase Database · checked Sep 24, 2026
15	Ingenuity Partners	Indirect evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	38 contacts →
	Indirect evidence “Too many organisations pour time and money into technology without getting the outcomes they expected.” Source: RevenueBase Database · checked Sep 24, 2026
16	Alembic	Partial evidence	Sydney, AustraliaHQ checked Sep 24, 2026	11-50	35 contacts →
	Partial evidence “We deliver future proof software for organisations that rely on technology to enable their business.” Source: RevenueBase Database · checked Sep 24, 2026
17	Sazae PTY LTD	Partial evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	35 contacts →
	Partial 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 24, 2026
18	High Tech Masterminds	Partial evidence	Sydney, AustraliaHQ checked Sep 24, 2026	n/a	33 contacts →
	Partial evidence “We are a high technology consulting firm in Sydney, Australia.” Source: RevenueBase Database · checked Sep 24, 2026
19	Advance Delivery Consulting	Partial evidence	Sydney, AustraliaHQ checked Sep 24, 2026	501-1,000	32 contacts →
	Partial 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 24, 2026
20	Thinkmill	Partial evidence	Sydney, AustraliaHQ checked Sep 24, 2026	11-50	31 contacts →
	Partial evidence “ABOUT US Thinkmill is an Australian software design and engineering consultancy.” Source: RevenueBase Database · checked Sep 24, 2026
21	System Squared	Partial evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	28 contacts →
	Partial evidence “System Squared was founded on the knowledge that customers require better responsiveness, genuine advice and the lowest consistent pricing in an ever accelerating world driven by…” Source: RevenueBase Database · checked Sep 24, 2026
22	Proitzen	Partial evidence	Sydney, AustraliaHQ checked Sep 24, 2026	11-50	28 contacts →
	Partial evidence “Proitzen is a provider of business enterprise and on-demand software solutions.” Source: RevenueBase Database · checked Sep 24, 2026
23	Gammer Group	Indirect evidence	Sydney, AustraliaHQ checked Sep 24, 2026	11-50	25 contacts →
	Indirect evidence “Simplifying IT solutions that work for your business.” Source: RevenueBase Database · checked Sep 24, 2026
24	Starack	Indirect evidence	Sydney, AustraliaHQ checked Sep 24, 2026	11-50	25 contacts →
	Indirect evidence “STARACK is a provider of IT services and solutions, with a global footprint spanning Australia and Vietnam.” Source: RevenueBase Database · checked Sep 24, 2026
25	Star X Technology Solutions PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 24, 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 24, 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: custom software development consulting firms. 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 custom software development consulting firms.
Partial evidence: Its own public description names part of custom software development consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name custom software development consulting firms. 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 599 custom software development consulting firms based in Sydney, Australia

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Custom software development consulting firms based in Sydney, Australia at a glance

As of Sep 24, 2026

24.7%Verified-email coverage

8.7Average contacts per company

1-10Median size (employees)

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

338

11-50

197

51-200

201-500

501-1,000

1,001-5,000

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 599 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 custom software development consulting firms, 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 “custom software development consulting firms”. 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 custom software development consulting firms), 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 custom software development consulting firms, 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, 1,280 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 24, 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.

Custom software development consulting firms by metro in Australia

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 custom software development consulting firms, 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 custom software development consulting firms are there based in Sydney, Australia?

RevenueBase identified 599 custom software development consulting firms 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?

NRI Australia & NEW Zealand, headquartered in Sydney, tops this list with the largest team on record.

Which city in Australia has the most custom software development consulting firms?

Sydney leads Australia with 599 headquartered companies, followed by Melbourne (598) and Brisbane (195).

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 1,280 verified decision-maker contacts tracked across these 599 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 24, 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.