Company lists · Data verified August 2026

Top 25 Carbon neutral software companies based in Australia

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 127 companies tracked

There are 127 carbon neutral software companies headquartered in Australia (RevenueBase, August 2026). RevenueBase tracks 713 professional contacts across them, including 272 with verified work emails and 45 with mobile numbers. Sydney is the largest hub.

This list covers carbon neutral software companies headquartered in Australia, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

127Companies

713Contacts tracked

272Verified emails

45Mobile numbers

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The 25 largest carbon neutral software companies based in Australia

Ranked by team size

Top 25 of 127 carbon neutral software companies based in Australia, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Optima Technology	Melbourne	11-50	46	14
2	Core Markets	Melbourne	11-50	35	25
3	Orkestra	Brisbane	11-50	32	25
4	Vela Sustainability Technologies	Brisbane	201-500	30	3
5	CLIMA	Sydney	11-50	24	2
6	Energylink Services PTY LTD	Sydney	11-50	17	11
7	Buildings Alive	Sydney	11-50	16	10
8	Informed 365	Currumbin Valley	11-50	16	7
9	Clear Carbon	Perth	1-10	15	8
10	Kinesis	Sydney	11-50	15	7
11	Netnada	Sydney	11-50	15	6
12	2xe	North Adelaide	11-50	14	12
13	Polar Enviro	Melbourne	1-10	14	11
14	Avarni	Sydney	11-50	13	4
15	The Lever Room	Melbourne	1-10	12	8
16	Super Smart Energy	West Perth	11-50	12	6
17	Solar Energy Enterprises	Barangaroo	11-50	12	3
18	The Mullion Group	Canberra	11-50	11	5
19	Kiltech INC	n/a	11-50	10	4
20	Sensand	Melbourne	11-50	9	6
21	Noco2 Carbon Reduction Institute	Sydney	11-50	9	4
22	Cresstec Hvac-R	North Rocks	11-50	8	7
23	Climate Zero	Albert Park	11-50	8	5
24	Empauer	Richmond	201-500	7	5
25	Isystain	Brisbane City	11-50	7	4

Showing 25 of 127 carbon neutral software companies based in Australia

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Carbon neutral software companies based in Australia at a glance

As of Aug 28, 2026

1-10Median size (employees)

SydneyLargest hub · 28 HQs

45Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

201-500

Carbon neutral software companies by metro

Metro	Companies
Carbon neutral software companies in Sydney	28
Carbon neutral software companies in Melbourne	22
Carbon neutral software companies in Brisbane	10
Carbon neutral software companies in Adelaide	5
Carbon neutral software companies in Perth	5
Carbon neutral software companies in Canberra	4
Carbon neutral software companies in Pyrmont	2
Carbon neutral software companies in Newcastle	2

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “carbon neutral software companies”, with match quality audited by blind human judging, and headquartered in Australia.
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: Contact records re-verify on a rolling cadence; 1 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many carbon neutral software companies are there based in Australia?

There are 127 carbon neutral software companies headquartered in Australia as of August 2026 (RevenueBase).

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 neutral software companies?

Sydney leads with 28 headquartered companies, followed by Melbourne (22) and Brisbane (10).

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 272 verified decision-maker contacts tracked across these 127 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.