Company lists · Data refreshed September 2026

Top 25 Sustainable software development firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 14,027 companies tracked

RevenueBase identified 14,027 sustainable software development firms worldwide as of September 2026 and tracks 151,948 professional contacts across them, including 39,838 with verified work emails. Brazil is the largest market and Sao Paulo the largest hub.

This list covers sustainable software development firms 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 development firms 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

14,027Companies

151,948Contacts tracked

39,838Verified emails

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The 25 largest sustainable software development firms worldwide

Ranked by team size

Top 25 of 14,027 sustainable software development firms 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 development firms: 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	ERM	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	5,001-10,000	9,119 contacts →
	Partial evidence “Sustainability is our business.” Source: RevenueBase Database · checked Sep 29, 2026
2	Groupe SII	Indirect evidence	Paris, FranceHQ checked Sep 29, 2026	10001+	4,928 contacts →
	Indirect evidence “Le groupe SII est une société d’ingénierie et de conseil en technologies (ICT) et une entreprise de services numériques (ESN) créée en 1979 par Bernard HUVÉ, ingénieur de…” Source: RevenueBase Database · checked Sep 29, 2026
3	Ambipar	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 29, 2026	10001+	2,599 contacts →
	Indirect evidence “Our mission is to promote ecological transformation by investing in decarbonization projects, circular economy, energy transition, and environmental regeneration.” Source: RevenueBase Database · checked Sep 29, 2026
4	ALTIA	Indirect evidence	Oleiros (a Coruña), SpainHQ checked Sep 29, 2026	1,001-5,000	1,677 contacts →
	Indirect evidence “At Altia, we have been providing future-proof digital solutions that deliver real value and create meaningful change for 30 years.” Source: RevenueBase Database · checked Sep 29, 2026
5	Montrose Environmental Group	Indirect evidence	Little Rock, AR, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,529 contacts →
	Indirect evidence “Onterris (formerly Montrose Environmental Group) was one of the first to see environmental responsibility as not just an imperative but as a strategic asset.” Source: RevenueBase Database · checked Sep 29, 2026
6	Sphera	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,349 contacts →
	Partial evidence “Sphera creates a safer, more sustainable and productive world.” Source: RevenueBase Database · checked Sep 29, 2026
7	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
8	Interagua Ecuador	Indirect evidence	Guayaquil, EcuadorHQ checked Sep 29, 2026	501-1,000	783 contacts →
	Indirect evidence “Somos una empresa sólida, confiable, orientada al cliente; líder en el manejo ambiental, con procesos de calidad, tecnología y recursos humanos competentes.” Source: RevenueBase Database · checked Sep 29, 2026
9	Inerco	Strong evidence	Sevilla, SpainHQ checked Sep 29, 2026	1,001-5,000	688 contacts →
	Strong 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
10	Ricardo PLC	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	1,001-5,000	670 contacts →
	Indirect evidence “Click the 'Follow' button and explore careers at Ricardo on our 'Jobs' and 'Life' tabs and at careers.ricardo.com.” Source: RevenueBase Database · checked Sep 29, 2026
11	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
12	Diagonal	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 29, 2026	501-1,000	527 contacts →
	Indirect evidence “Diagonal is a pioneering socio-environmental management consultancy that helps companies, organizations and governments to raise their ESG standard and generate a positive…” Source: RevenueBase Database · checked Sep 29, 2026
13	Synergia Consultoria Socioambiental	Indirect evidence	São Paulo, BrazilHQ checked Sep 29, 2026	201-500	497 contacts →
	Indirect evidence “We are a company specialized in pioneer socio-environmental consultancy, in which for more than 17 years have worked with the creation and execution of effective solutions to the…” Source: RevenueBase Database · checked Sep 29, 2026
14	Codecentric AG	Partial evidence	Solingen, GermanyHQ checked Sep 29, 2026	501-1,000	490 contacts →
	Partial evidence “Seit zwei Dekaden entwickelt die codecentric AG moderne, individuelle Software.” Source: RevenueBase Database · checked Sep 29, 2026
15	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
16	ADP Consulting	Partial evidence	Melbourne, AustraliaHQ checked Sep 29, 2026	201-500	468 contacts →
	Partial evidence “ADP Consulting, an Ayesa company, is a sustainability-led engineering consultancy on a quest to inspire a better world through influence and design.” Source: RevenueBase Database · checked Sep 29, 2026
17	Sete Soluções E Tecnologia Ambiental	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 29, 2026	501-1,000	448 contacts →
	Indirect evidence “Somos uma das maiores consultorias em meio ambiente do Brasil, fundada em 1997, contando, hoje, com uma equipe técnica multidisciplinar permanente, que congrega profissionais das…” Source: RevenueBase Database · checked Sep 29, 2026
18	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
19	Adesso Schweiz AG	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 29, 2026	501-1,000	425 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
20	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
21	Intervest Software Technologies Private Limited	Strong evidence	Colombo, Sri LankaHQ checked Sep 29, 2026	501-1,000	402 contacts →
	Strong evidence “Intervest specializes in software development and providing IT support services delivering innovative, cost effective, high-quality custom-built software solutions based on a…” Source: RevenueBase Database · checked Sep 29, 2026
22	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
23	SEMIC	Indirect evidence	Lleida, SpainHQ checked Sep 29, 2026	201-500	390 contacts →
	Indirect evidence “Somos una empresa de servicios y soluciones TI de valor, basadas en el conocimiento, la seguridad y la sostenibilidad.” Source: RevenueBase Database · checked Sep 29, 2026
24	EMM Consulting PTY Limited	Partial evidence	St Leonards, AustraliaHQ checked Sep 29, 2026	201-500	361 contacts →
	Partial evidence “At EMM, we believe that a sustainable future is achievable, and we are dedicated to helping our clients and the community make it a reality.” Source: RevenueBase Database · checked Sep 29, 2026
25	Software Mansion	Indirect evidence	Kraków, PolandHQ checked Sep 29, 2026	201-500	353 contacts →
	Indirect evidence “We are a team of engineers with strong technical know-how, and we enjoy complicated, unconventional projects.” 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 development firms. 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 development firms.
Partial evidence: Its own public description names part of sustainable software development firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainable software development firms. 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 14,027 sustainable software development firms worldwide

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Sustainable software development firms worldwide at a glance

As of Sep 29, 2026

26.2%Verified-email coverage

10.8Average contacts per company

1-10Median size (employees)

1.6%Largest-city concentration · Sao Paulo

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

8,666

11-50

4,102

51-200

908

201-500

196

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 development firms, 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 development firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “sustainable software development firms”. 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 development firms), 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 development firms, 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, 39,838 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 development firms by location

83 lists · largest first

Every Sustainable software development firms 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 development firms, 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 development firms are there worldwide?

RevenueBase identified 14,027 sustainable software development firms 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?

ERM, headquartered in London, tops this list with the largest team on record.

Which country has the most sustainable software development firms?

Brazil leads with 1,550 companies, followed by India (1,271) and the United States (1,259). Every sustainable software development firms list by country and city is linked on this page.

Which city has the most sustainable software development firms?

Sao Paulo leads with 224 headquartered companies, followed by London (180) and Pune (103).

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 39,838 verified decision-maker contacts tracked across these 14,027 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.