Company lists · Data refreshed September 2026

Top 25 Sustainable software companies worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 5,410 companies tracked

RevenueBase identified 5,410 sustainable software companies worldwide as of September 2026 and tracks 100,953 professional contacts across them, including 30,553 with verified work emails. The United States is the largest market and London the largest hub.

This list covers sustainable software companies worldwide, 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. Country and city lists for sustainable software companies follow the table.

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

5,410Companies

100,953Contacts tracked

30,553Verified emails

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The 25 largest sustainable software companies worldwide

Ranked by team size

Top 25 of 5,410 sustainable software companies worldwide, 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	Carrier Hvac	Partial evidence	United StatesHQ checked Sep 29, 2026	10001+	10,099 contacts →
	Partial evidence “Carrier is a global leader in intelligent climate and energy solutions, pioneering sustainable innovations in climate technologies.” Source: RevenueBase Database · checked Sep 29, 2026
2	Johnson Matthey	Indirect evidence	London, ItalyHQ checked Sep 29, 2026	5,001-10,000	8,053 contacts →
	Indirect evidence “Johnson Matthey (JM) is a world leader in platinum group metals (PGMs).” Source: RevenueBase Database · checked Sep 29, 2026
3	Veolia UK	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	10001+	2,823 contacts →
	Indirect evidence “Veolia UK provides solutions for ecological transformation which means reconciling human progress with environmental protection.” Source: RevenueBase Database · checked Sep 29, 2026
4	Mckinstry	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,213 contacts →
	Indirect evidence “We're a national construction and energy services company dedicated to innovating the waste and climate harm out of the built environment.” Source: RevenueBase Database · checked Sep 29, 2026
5	GE Digital	Partial evidence	San Ramon, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,763 contacts →
	Partial evidence “At GE Digital, our focus is clear: delivering software that accelerates a new era of energy.” Source: RevenueBase Database · checked Sep 29, 2026
6	Adec Innovations	Partial evidence	Irvine, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,304 contacts →
	Partial evidence “ADEC Innovations seamlessly delivers fully integrated, cost-effective industry expertise, business process & data management, and software services.” Source: RevenueBase Database · checked Sep 29, 2026
7	BKW AG	Indirect evidence	Bern, SwitzerlandHQ checked Sep 29, 2026	10001+	1,148 contacts →
	Indirect evidence “The BKW Group is an internationally active energy and infrastructure company based in Berne.” Source: RevenueBase Database · checked Sep 29, 2026
8	Gruppo AB	Partial evidence	Orzinuovi, United KingdomHQ checked Sep 29, 2026	1,001-5,000	1,081 contacts →
	Partial evidence “Since 1981, AB has tackled the challenges posed by energy sustainability, working alongside our customers to improve their competitiveness while saving energy and reducing…” Source: RevenueBase Database · checked Sep 29, 2026
9	VAN Dorp	Indirect evidence	Zoetermeer, NetherlandsHQ checked Sep 29, 2026	1,001-5,000	873 contacts →
	Indirect evidence “Bij Van Dorp zijn wij ervan doordrongen dat wij de wereld niet voor onszelf hebben.” Source: RevenueBase Database · checked Sep 29, 2026
10	Franklin Energy	Partial evidence	Port Washington, WI, United StatesHQ checked Sep 29, 2026	1,001-5,000	838 contacts →
	Partial evidence “Franklin Energy delivers end-to-end sustainability solutions through a portfolio of intelligent products and services that lower energy costs, reduce carbon and waste, and grow…” Source: RevenueBase Database · checked Sep 29, 2026
11	NWG S.P.A	Indirect evidence	Prato, ItalyHQ checked Sep 29, 2026	n/a	766 contacts →
	Indirect evidence “Nata a Prato nel 2003 è oggi una delle più importanti realtà nel mercato della Green Economy.” Source: RevenueBase Database · checked Sep 29, 2026
12	Inerco	Partial evidence	Sevilla, SpainHQ checked Sep 29, 2026	1,001-5,000	688 contacts →
	Partial evidence “INERCO, with 30 years of experience, offers comprehensive services and develops advanced technologies that contribute to sustainable industrial development, acting as a leader in…” Source: RevenueBase Database · checked Sep 29, 2026
13	KBC A Yokogawa Company	Partial evidence	Walton-on-thames, United KingdomHQ checked Sep 29, 2026	201-500	658 contacts →
	Partial evidence “We are passionate about driving sustainable change for our planet.” Source: RevenueBase Database · checked Sep 29, 2026
14	Schneider Electric Sustainability Business	Partial evidence	Louisville, KY, United StatesHQ checked Sep 29, 2026	1,001-5,000	571 contacts →
	Partial evidence “We are your digital partner for sustainability and efficiency, ensuring Life Is On, for homes, buildings, data centers, infrastructure and industries.” Source: RevenueBase Database · checked Sep 29, 2026
15	ACT Group	Indirect evidence	Amsterdam, NetherlandsHQ checked Sep 29, 2026	501-1,000	556 contacts →
	Indirect evidence “As the leading environmental solutions partner for organizations globally, ACT helps its partners meet increasing environmental action and disclosure expectations from regulators…” Source: RevenueBase Database · checked Sep 29, 2026
16	Groupe Sigma	Indirect evidence	La Chapelle Sur Erdre, FranceHQ checked Sep 29, 2026	501-1,000	543 contacts →
	Indirect evidence “Notre ambition : créer plus de performance par le numérique à impact.” Source: RevenueBase Database · checked Sep 29, 2026
17	Watershed	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 29, 2026	201-500	529 contacts →
	Partial evidence “Watershed is the enterprise sustainability platform.” Source: RevenueBase Database · checked Sep 29, 2026
18	Amara Nzero Brasil	Indirect evidence	Salvador, BrazilHQ checked Sep 29, 2026	501-1,000	493 contacts →
	Indirect evidence “Somos uma empresa com uma grande experiência integral em energia sustentável fortemente comprometida com a Transição Energética.” Source: RevenueBase Database · checked Sep 29, 2026
19	Osapiens	Strong evidence	Mannheim, GermanyHQ checked Sep 29, 2026	501-1,000	482 contacts →
	Strong evidence “osapiens – one platform for sustainable growth osapiens develops software that empowers companies to drive sustainable growth across their entire value chain.” Source: RevenueBase Database · checked Sep 29, 2026
20	3e Engenharia EM Eficiencia Energetica	Indirect evidence	BrazilHQ checked Sep 29, 2026	201-500	473 contacts →
	Indirect evidence “A 3E Engenharia atua nacionalmente, oferecendo soluções para empresas concessionárias de serviços públicos, no planejamento, gestão, execução e inovação em projetos de Eficiência…” Source: RevenueBase Database · checked Sep 29, 2026
21	Dupont Water Solutions	Indirect evidence	Wilmington, DE, United StatesHQ checked Sep 29, 2026	10001+	470 contacts →
	Indirect evidence “We’re helping companies in every industry, in every corner of the globe make real progress.” Source: RevenueBase Database · checked Sep 29, 2026
22	Enablon	Partial evidence	Alphen Aan Den Rijn, NetherlandsHQ checked Sep 29, 2026	501-1,000	433 contacts →
	Partial evidence “Enablon, part of Wolters Kluwer's Corporate Performance & ESG division, is the world's leading provider of integrated software solutions for Environment, Health and Safety (EHS)…” Source: RevenueBase Database · checked Sep 29, 2026
23	Tecno Group	Partial evidence	Napoli, ItalyHQ checked Sep 29, 2026	201-500	423 contacts →
	Partial evidence “We are an Energy Digital and Sustainable Company specialized in sustainability consulting services and 4.0 solutions.” Source: RevenueBase Database · checked Sep 29, 2026
24	Isotrol	Partial evidence	Sevilla, MexicoHQ checked Sep 29, 2026	201-500	398 contacts →
	Partial evidence “Isotrol is the world market leader in energy software solutions and renewable energy plant control solutions used by large energy companies for 4 decades now.” Source: RevenueBase Database · checked Sep 29, 2026
25	Greenflex	Indirect evidence	Paris, FranceHQ checked Sep 29, 2026	501-1,000	390 contacts →
	Indirect evidence “Since 2009, GreenFlex has been a key partner in the energy, environmental and societal transformation of organizations, enabling them to change their trajectory towards an economy…” 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 5,410 sustainable software companies worldwide

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Sustainable software companies worldwide at a glance

As of Sep 29, 2026

30.3%Verified-email coverage

18.7Average contacts per company

1-10Median size (employees)

2.2%Largest-city concentration · London

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

3,194

11-50

1,640

51-200

381

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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.
Coverage: Every country. Country and city lists for sustainable software companies are linked below.
What qualifies: Companies worldwide 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.
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, 30,553 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.

Sustainable software companies by location

35 lists · largest first

Every Sustainable software companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 worldwide?

RevenueBase identified 5,410 sustainable software companies worldwide 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?

Carrier Hvac, headquartered in Worldwide, tops this list with the largest team on record.

Which country has the most sustainable software companies?

The United States leads with 435 companies, followed by Brazil (434) and India (403). Every sustainable software companies list by country and city is linked on this page.

Which city has the most sustainable software companies?

London leads with 120 headquartered companies, followed by Sao Paulo (73) and Paris (53).

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 30,553 verified decision-maker contacts tracked across these 5,410 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.