Company lists · Data refreshed September 2026

Top 25 Platform building firms based in Sydney, Australia

Name: Platform building firms based in Sydney, Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 366 companies tracked

RevenueBase identified 366 platform building firms headquartered in Sydney, Australia as of September 2026 and tracks 4,093 professional contacts across them, including 900 with verified work emails. Sydney is the largest hub.

This list covers platform building 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 5, 2026 86% judged on-target in blind review

366Companies

4,093Contacts tracked

900Verified emails

Explore all 366 companies → Free signup · no credit card · 500 free credits

The 25 largest platform building firms based in Sydney, Australia

Ranked by team size

Top 25 of 366 platform building firms based in Sydney, Australia, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names platform building firms: 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	NCS Group AustraliaIndirect evidence	Sydney, AustraliaHQ checked Sep 5, 2026	1,001-5,000	802
	“NCS in Australia is reinventing technology services from the inside out.” Source: company website · checked Sep 5, 2026
2	Orro GroupPartial evidence	Sydney, AustraliaHQ checked Sep 5, 2026	201-500	393
	“We are Orro – Australia’s platform-enabled, secure network and digital infrastructure provider.” Source: company website · checked Sep 5, 2026
3	ItelasoftIndirect evidence	Sydney, AustraliaHQ checked Sep 5, 2026	51-200	141
	“iTelaSoft is a ISO/IEC 27001:2022 accredited trusted technology partner delivering high-impact digital solutions across Australia, the UK, and APAC.” Source: company website · checked Sep 5, 2026
4	GHO SydneyIndirect evidence	Sydney, AustraliaHQ checked Sep 5, 2026	11-50	99
	“We are a creative digital agency based in Sydney.” Source: company website · checked Sep 5, 2026
5	BILUEIndirect evidence	Sydney, AustraliaHQ checked Sep 5, 2026	51-200	94
	“Bilue partners with ambitious organisations to design and engineer digital products that are built right, the first time.” Source: company website · checked Sep 5, 2026
6	WebentialIndirect evidence	Sydney, AustraliaHQ checked Sep 5, 2026	11-50	75
	“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: company website · checked Sep 5, 2026
7	TechnocratIndirect evidence	Sydney, AustraliaHQ checked Sep 5, 2026	51-200	69
	“Technocrat is one of Australia's leading digital agencies specialising in user experience (UX) and open source development.” Source: company website · checked Sep 5, 2026
8	AppelloIndirect evidence	Sydney, AustraliaHQ checked Sep 5, 2026	51-200	57
	“Appello is a global digital product development company headquartered in Sydney.” Source: company website · checked Sep 5, 2026
9	Round Table AppsIndirect evidence	Sydney, AustraliaHQ checked Sep 5, 2026	51-200	48
	“At Round Table Apps, our mission is to create digital experiences that help organisations achieve their transformative goals.” Source: company website · checked Sep 5, 2026
10	Software At ScaleIndirect evidence	Sydney, AustraliaHQ checked Sep 5, 2026	51-200	46
	“A leading technology consultancy that empowers businesses with comprehensive solutions for their digital transformation.” Source: company website · checked Sep 5, 2026
11	DigitalrooarPartial evidence	Sydney, AustraliaHQ checked Sep 5, 2026	11-50	44
	“From web development to building a smart and creative solution, we cater to all your needs with our groundbreaking team and tools.” Source: company website · checked Sep 5, 2026
12	Sitback SolutionsIndirect evidence	Sydney, AustraliaHQ checked Sep 5, 2026	11-50	40
	“At Sitback, we specialise in creating exceptional digital experiences that empower our clients, their customers, and our people.” Source: company website · checked Sep 5, 2026
13	Devops1Indirect evidence	Sydney, AustraliaHQ checked Sep 5, 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 5, 2026
14	Tussle DigitalIndirect evidence	Sydney, AustraliaHQ checked Sep 5, 2026	51-200	36
	“Tussle Digital is a leading digital marketing agency based in Sydney, Australia.” Source: company website · checked Sep 5, 2026
15	DigizooIndirect evidence	Sydney, AustraliaHQ checked Sep 5, 2026	11-50	35
	“Digizoo was formed to fill a gap in the market for practical, technical transition from traditional systems and processes to the new digital world, increasingly sought by their…” Source: company website · checked Sep 5, 2026
16	ThinkmillIndirect evidence	Sydney, AustraliaHQ checked Sep 5, 2026	11-50	31
	“ABOUT US Thinkmill is an Australian software design and engineering consultancy.” Source: company website · checked Sep 5, 2026
17	SwitchIndirect evidence	Sydney, AustraliaHQ checked Sep 5, 2026	51-200	26
	“Switch is a multi-award-winning digital experience and technology agency with proven success in deliver with proven success in delivering the complete vision for customer…” Source: company website · checked Sep 5, 2026
18	Vervio DigitalPartial evidence	Sydney, AustraliaHQ checked Sep 5, 2026	11-50	23
	“Vervio is a digital engineering consultancy that designs, delivers and supports enterprise-grade digital experience platforms, cloud modernisation, and AI-enabled solutions.” Source: company website · checked Sep 5, 2026
19	InterestingIndirect evidence	Sydney, AustraliaHQ checked Sep 5, 2026	11-50	23
	“We are an independent experience, design and technology studio based in Sydney, Australia.” Source: company website · checked Sep 5, 2026
20	BearplusIndirect evidence	Sydney, AustraliaHQ checked Sep 5, 2026	51-200	22
	“BearPlus is an award-winning digital agency.” Source: company website · checked Sep 5, 2026
21	SentiaIndirect evidence	Sydney, AustraliaHQ checked Sep 5, 2026	11-50	21
	“Sentia is a software development consultancy company specialising in web and mobile development based in Sydney, Australia and now Zagreb, croatia Sentia is a team of enthusiastic…” Source: company website · checked Sep 5, 2026
22	Shakewell AgencyIndirect evidence	Sydney, AustraliaHQ checked Sep 5, 2026	51-200	19
	“Shakewell Agency is a digital product studio where customer insight, technical expertise, and creativity unite to build transformative solutions.” Source: company website · checked Sep 5, 2026
23	Nasmak Technologies PTY LTDIndirect evidence	Sydney, AustraliaHQ checked Sep 5, 2026	11-50	19
	“At NASMAK Technologies Pty Ltd we offer Creative Solution, UX & UI Design, Custom Solution Development, Business Growth Strategy and Growth Hacking Marketing services.” Source: company website · checked Sep 5, 2026
24	The Reach AgencyIndirect evidence	Sydney, AustraliaHQ checked Sep 5, 2026	11-50	18
	“We are the leading digital development agency for delivering better investor engagement and secure web solutions.” Source: company website · checked Sep 5, 2026
25	Rocket LAB PTY LTDIndirect evidence	Sydney, AustraliaHQ checked Sep 5, 2026	11-50	17
	“We conduct experiments that may or may not seriously break the universe.” Source: company website · checked Sep 5, 2026

Showing 25 of 366 platform building firms based in Sydney, Australia

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Platform building firms based in Sydney, Australia at a glance

As of Sep 5, 2026

1-10Median size (employees)

SydneyLargest hub · 366 HQs

Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

219

11-50

111

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole Australia list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Sydney, over 366 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 platform building firms, 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 Sydney, Australia whose own description of what they do matches “platform building firms”. 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 platform building 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 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, 900 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 5, 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.

Platform building firms by metro in Australia

Frequently asked

How many platform building firms are there based in Sydney, Australia?

RevenueBase identified 366 platform building 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?

NCS Group Australia, headquartered in Sydney, tops this list with the largest team on record.

Which city has the most platform building firms?

Sydney leads with 366 headquartered companies, followed by Melbourne (327) and Brisbane (86).

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 900 verified decision-maker contacts tracked across these 366 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 5, 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.