Company lists · Data refreshed September 2026

Top 25 Sustainable software companies based in Australia

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

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 106 companies tracked

RevenueBase identified 106 sustainable software companies headquartered in Australia as of September 2026 and tracks 949 professional contacts across them, including 361 with verified work emails. Melbourne is the largest hub.

This list covers sustainable software 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 29, 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 29, 2026 86% judged on-target in blind review

106Companies

949Contacts tracked

361Verified emails

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The 25 largest sustainable software companies based in Australia

Ranked by team size

Top 25 of 106 sustainable software companies based in Australia, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to sustainable software 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	Synertec	Partial evidence	Camberwell, AustraliaHQ checked Sep 29, 2026	51-200	137 contacts →
	Partial evidence “Synertec is a diversified Technology and Engineering company focussed on developing and delivering environmentally sustainable solutions for challenging industry sectors, with…” Source: RevenueBase Database · checked Sep 29, 2026
2	Earth Systems	Indirect evidence	Port Melbourne, AustraliaHQ checked Sep 29, 2026	51-200	101 contacts →
	Indirect evidence “At Earth Systems, we believe that solving the world’s environmental challenges requires more than just knowledge-it takes innovation and action.” Source: RevenueBase Database · checked Sep 29, 2026
3	Optima Technology	Partial evidence	Melbourne, AustraliaHQ checked Sep 29, 2026	11-50	46 contacts →
	Partial evidence “Optima Technology Group is a software technology company that offers accurate, automated and secure energy data management solutions now focused on Net Zero reporting as well as…” Source: RevenueBase Database · checked Sep 29, 2026
4	VIRTU	Partial evidence	Alexandria, AustraliaHQ checked Sep 29, 2026	11-50	41 contacts →
	Partial evidence “Virtu is Australia's leading sustainable Information and Communication Technology (ICT) company.” Source: RevenueBase Database · checked Sep 29, 2026
5	Core Markets	Indirect evidence	Melbourne, AustraliaHQ checked Sep 29, 2026	11-50	35 contacts →
	Indirect evidence “CORE Markets provides market intelligence, advisory and transaction services across power, carbon and environmental markets - serving commercial decision-makers through the energy…” Source: RevenueBase Database · checked Sep 29, 2026
6	Renewables Technical Services	Partial evidence	Bondi Junction, AustraliaHQ checked Sep 29, 2026	51-200	34 contacts →
	Partial evidence “At RTS, we are dedicated to powering a sustainable future for Australia.” Source: RevenueBase Database · checked Sep 29, 2026
7	Gaia Resources	Partial evidence	Perth, AustraliaHQ checked Sep 29, 2026	11-50	26 contacts →
	Partial evidence “Gaia Resources is a consultancy that responsibly delivers sustainable technology solutions to make the world a better place.” Source: RevenueBase Database · checked Sep 29, 2026
8	Groundwork Plus NOW SLR	Indirect evidence	Milton, AustraliaHQ checked Sep 29, 2026	1,001-5,000	22 contacts →
	Indirect evidence “Groundwork Plus (Now SLR)” Source: RevenueBase Database · checked Sep 29, 2026
9	Taylex Australia	Indirect evidence	Ormeau, AustraliaHQ checked Sep 29, 2026	51-200	20 contacts →
	Indirect evidence “TAYLEX AUSTRALIA is an environmental services company based out of 56 Prairie Rd, Ormeau, Queensland, Australia.” Source: RevenueBase Database · checked Sep 29, 2026
10	Beyond Zero Technologies	Partial evidence	Vermont, AustraliaHQ checked Sep 29, 2026	51-200	19 contacts →
	Partial evidence “Beyond Zero Technologies specialises in turnkey building technology solutions to enhance sustainability, operational efficiency, and safety.” Source: RevenueBase Database · checked Sep 29, 2026
11	Infostatus	Indirect evidence	Melbourne, AustraliaHQ checked Sep 29, 2026	11-50	17 contacts →
	Indirect evidence “At Infostatus, we translate complex technology into accessible, tailored services that help organisations rethink how they work.” Source: RevenueBase Database · checked Sep 29, 2026
12	Informed 365	Partial evidence	Currumbin Valley, AustraliaHQ checked Sep 29, 2026	11-50	16 contacts →
	Partial evidence “Informed 365 is an Australian based tech company that specialises solely on better sustainability outcomes.” Source: RevenueBase Database · checked Sep 29, 2026
13	Kinesis	Indirect evidence	Sydney, AustraliaHQ checked Sep 29, 2026	11-50	15 contacts →
	Indirect evidence “Kinesis is a leading climate tech business that helps organisations step-change their net-zero impact.” Source: RevenueBase Database · checked Sep 29, 2026
14	Polar Enviro	Indirect evidence	Melbourne, AustraliaHQ checked Sep 29, 2026	1-10	14 contacts →
	Indirect evidence “Polar Enviro is the umbrella brand for Smarterlite, Safety Path, OmniGrip Direct and Vivacity.” Source: RevenueBase Database · checked Sep 29, 2026
15	Solar Energy Enterprises	Partial evidence	Barangaroo, AustraliaHQ checked Sep 29, 2026	11-50	12 contacts →
	Partial evidence “At Solar Energy Enterprises (SEE Group), our aim is simple: to help businesses Rethink Sustainability.” Source: RevenueBase Database · checked Sep 29, 2026
16	The Mullion Group	Partial evidence	Canberra, AustraliaHQ checked Sep 29, 2026	11-50	11 contacts →
	Partial evidence “The Mullion Group is an Australian based software and consulting company, internationally recognised for its expertise in greenhouse gas inventory systems for the land sector.” Source: RevenueBase Database · checked Sep 29, 2026
17	Cresstec Hvac-R	Indirect evidence	North Rocks, AustraliaHQ checked Sep 29, 2026	11-50	8 contacts →
	Indirect evidence “CRESSTEC is an acronym for Carbon Reducing Energy Saving Solutions and Technologies; its very definition is exactly what our company stands for.” Source: RevenueBase Database · checked Sep 29, 2026
18	Climate Zero	Indirect evidence	Albert Park, AustraliaHQ checked Sep 29, 2026	11-50	8 contacts →
	Indirect evidence “We understand the barriers between businesses and net zero.” Source: RevenueBase Database · checked Sep 29, 2026
19	Isystain	Indirect evidence	Brisbane City, AustraliaHQ checked Sep 29, 2026	11-50	7 contacts →
	Indirect evidence “iSystain drives both management and reporting processes across the full scope of Environment, Social and Governance (ESG) requirements.” Source: RevenueBase Database · checked Sep 29, 2026
20	N0de	Indirect evidence	Melbourne, AustraliaHQ checked Sep 29, 2026	1-10	7 contacts →
	Indirect evidence “At n0de, we believe that every organisation deserves a world-class strategy for achievable action towards Net Zero.” Source: RevenueBase Database · checked Sep 29, 2026
21	Graham A Brown & Associates	Indirect evidence	Newcastle, AustraliaHQ checked Sep 29, 2026	1-10	6 contacts →
	Indirect evidence “Graham A Brown & Associates is an Australian family-owned consultancy company formed in 1975.” Source: RevenueBase Database · checked Sep 29, 2026
22	ARTEH	Indirect evidence	Brisbane, AustraliaHQ checked Sep 29, 2026	1-10	6 contacts →
	Indirect evidence “At Arteh, we believe that climate action shouldn't be complicated, expensive, or out of reach.” Source: RevenueBase Database · checked Sep 29, 2026
23	Seedhaus	Indirect evidence	Worongary, AustraliaHQ checked Sep 29, 2026	1-10	5 contacts →
	Indirect evidence “At SeedHaus™ we provide both residential and commercial energy efficiency solutions.” Source: RevenueBase Database · checked Sep 29, 2026
24	Zero Energy	Partial evidence	Caroline Springs, AustraliaHQ checked Sep 29, 2026	1-10	5 contacts →
	Partial evidence “At Zero Energy, our mission is to empower businesses and individuals to achieve zero carbon emissions through sustainable energy solutions.” Source: RevenueBase Database · checked Sep 29, 2026
25	Rosetta Analytics	Partial evidence	Melbourne, AustraliaHQ checked Sep 29, 2026	11-50	5 contacts →
	Partial evidence “Rosetta Analytics is a technology provider committed to helping create a sustainable future.” Source: RevenueBase Database · checked Sep 29, 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: sustainable software 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 sustainable software companies.
Partial evidence: Its own public description names part of sustainable software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainable software 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 106 sustainable software companies based in Australia

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Sustainable software companies based in Australia at a glance

As of Sep 29, 2026

38.0%Verified-email coverage

9.0Average contacts per company

1-10Median size (employees)

19.8%Largest-city concentration · Melbourne

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

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 106 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 sustainable software 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 “sustainable software 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 sustainable software 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 sustainable software 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, 361 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 29, 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 sustainable software 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 sustainable software companies are there based in Australia?

RevenueBase identified 106 sustainable software 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?

Synertec, headquartered in Camberwell, tops this list with the largest team on record.

Which city has the most sustainable software companies?

Melbourne leads with 21 headquartered companies, followed by Sydney (15) and Brisbane (8).

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 361 verified decision-maker contacts tracked across these 106 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 29, 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.