Company lists · Data refreshed September 2026

Top 25 Carbon software companies based in Australia

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 135 companies tracked

RevenueBase identified 135 carbon software companies headquartered in Australia as of September 2026 and tracks 843 professional contacts across them, including 346 with verified work emails. Sydney is the largest hub.

This list covers carbon 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 21, 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 21, 2026 86% judged on-target in blind review

135Companies

843Contacts tracked

346Verified emails

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The 25 largest carbon software companies based in Australia

Ranked by team size

Top 25 of 135 carbon software companies based in Australia, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to carbon 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	Optima Technology	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 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 21, 2026
2	MCI Carbon	Partial evidence	Mayfield West, AustraliaHQ checked Sep 21, 2026	11-50	42 contacts →
	Partial evidence “MCi Carbon (MCi) is a world-leading and award-winning Australian clean technology transforming carbon dioxide (CO2) into building products and materials for the circular carbon…” Source: RevenueBase Database · checked Sep 21, 2026
3	Core Markets	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	35 contacts →
	Partial 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 21, 2026
4	Greenbase	Indirect evidence	Perth, AustraliaHQ checked Sep 21, 2026	11-50	28 contacts →
	Indirect evidence “WHERE SCIENCE AND ACCOUNTING INTERSECT Since the 1990s, companies in resource-intensive industries, including mining, energy, and construction, have relied on Greenbase and its…” Source: RevenueBase Database · checked Sep 21, 2026
5	Carbon Neutral	Partial evidence	Perth, AustraliaHQ checked Sep 21, 2026	11-50	28 contacts →
	Partial evidence “Carbon Neutral is a profit-for-purpose carbon solutions provider and carbon offset developer.” Source: RevenueBase Database · checked Sep 21, 2026
6	CLIMA	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	24 contacts →
	Indirect evidence “Clima is a platform for climate action.” Source: RevenueBase Database · checked Sep 21, 2026
7	Natureco	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	19 contacts →
	Partial evidence “NatureCo is a global for-purpose business that develops and implements high-integrity nature-based carbon projects, creating a more optimistic future for our planet and people.” Source: RevenueBase Database · checked Sep 21, 2026
8	Energylink Services PTY LTD	Partial evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	18 contacts →
	Partial evidence “EnergyLink Services is a multi-disciplinary, specialist, energy and carbon consultancy and project developer.” Source: RevenueBase Database · checked Sep 21, 2026
9	Buildings Alive	Partial evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	16 contacts →
	Partial evidence “Buildings Alive helps owners and operators of large complex buildings to cut carbon emissions and cut costs.” Source: RevenueBase Database · checked Sep 21, 2026
10	Informed 365	Indirect evidence	Currumbin Valley, AustraliaHQ checked Sep 21, 2026	11-50	16 contacts →
	Indirect evidence “Informed 365 is an Australian based tech company that specialises solely on better sustainability outcomes.” Source: RevenueBase Database · checked Sep 21, 2026
11	2xe	Indirect evidence	North Adelaide, AustraliaHQ checked Sep 21, 2026	11-50	15 contacts →
	Indirect evidence “2XE is a leading Australian sustainability and climate consultancy helping businesses make credible, commercially grounded transitions.” Source: RevenueBase Database · checked Sep 21, 2026
12	Clear Carbon	Indirect evidence	Perth, AustraliaHQ checked Sep 21, 2026	1-10	15 contacts →
	Indirect evidence “We help companies get to Net Zero – fast.” Source: RevenueBase Database · checked Sep 21, 2026
13	Kinesis	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 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 21, 2026
14	Netnada	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	15 contacts →
	Indirect evidence “NetNada was built on the mission that companies, no matter their size, have a vital role to play in the future of our planet.” Source: RevenueBase Database · checked Sep 21, 2026
15	Andefena	Partial evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	14 contacts →
	Partial evidence “Andefena is infrastructure for climate, carbon and nature decisions.” Source: RevenueBase Database · checked Sep 21, 2026
16	Kc8 Capture Technologies	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	14 contacts →
	Indirect evidence “KC8 Capture Technologies Ltd (including subsidiaries UNO Technology Pty Ltd and KC8 Capture Services US), is a global technology company working to commercialise industry-leading…” Source: RevenueBase Database · checked Sep 21, 2026
17	Avarni	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	14 contacts →
	Indirect evidence “Avarni uses AI to turn messy data into an auditable sustainability report, tailored for climate disclosure compliance.” Source: RevenueBase Database · checked Sep 21, 2026
18	SYNE	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	13 contacts →
	Indirect evidence “SYNE is a Sustainability Management Platform benchmarking global businesses based on impact intellegence.” Source: RevenueBase Database · checked Sep 21, 2026
19	Super Smart Energy	Indirect evidence	West Perth, AustraliaHQ checked Sep 21, 2026	11-50	12 contacts →
	Indirect evidence “Facing mandatory climate reporting while under pressure to cut costs?” Source: RevenueBase Database · checked Sep 21, 2026
20	Solar Energy Enterprises	Indirect evidence	Barangaroo, AustraliaHQ checked Sep 21, 2026	11-50	12 contacts →
	Indirect evidence “At Solar Energy Enterprises (SEE Group), our aim is simple: to help businesses Rethink Sustainability.” Source: RevenueBase Database · checked Sep 21, 2026
21	The Mullion Group	Partial evidence	Canberra, AustraliaHQ checked Sep 21, 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 21, 2026
22	Green The Chain	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	1-10	10 contacts →
	Indirect evidence “Earthshot Nominated 2025 and top 10 out of 740 startups from around the world in the QBE Leading Cities Accelerator.” Source: RevenueBase Database · checked Sep 21, 2026
23	Sensand	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	9 contacts →
	Indirect evidence “At Sensand, we integrate technology to create innovative solutions for the world's land management markets.” Source: RevenueBase Database · checked Sep 21, 2026
24	Noco2 Carbon Reduction Institute	Partial evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	9 contacts →
	Partial evidence “The Carbon Reduction Institute is a profit-for-purpose carbon consulting business helping organisations measure, reduce and take responsibility for their greenhouse gas emissions.” Source: RevenueBase Database · checked Sep 21, 2026
25	Biocarbon AU	Partial evidence	Bulahdelah, AustraliaHQ checked Sep 21, 2026	11-50	8 contacts →
	Partial evidence “BIOCARBON is an innovative australian company, producing valuable renewable carbon products from low value biomass streams using Advanced Manufacturing.” Source: RevenueBase Database · checked Sep 21, 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: carbon 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 carbon software companies.
Partial evidence: Its own public description names part of carbon software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name carbon 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 135 carbon software companies based in Australia

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Carbon software companies based in Australia at a glance

As of Sep 21, 2026

41.0%Verified-email coverage

6.2Average contacts per company

1-10Median size (employees)

26.7%Largest-city concentration · Sydney

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

201-500

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 135 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 carbon 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 “carbon 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 carbon 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 carbon 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, 346 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 21, 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.

Carbon software companies by metro

Carbon software companies in Sydney36
Carbon software companies in Melbourne26

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 carbon 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 carbon software companies are there based in Australia?

RevenueBase identified 135 carbon 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?

Optima Technology, headquartered in Melbourne, tops this list with the largest team on record.

Which city has the most carbon software companies?

Sydney leads with 36 headquartered companies, followed by Melbourne (26) and Brisbane (7).

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 346 verified decision-maker contacts tracked across these 135 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 21, 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.