Company lists · Data refreshed September 2026

Top 25 Sustainable software companies based in Germany

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

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 227 companies tracked

RevenueBase identified 227 sustainable software companies headquartered in Germany as of September 2026 and tracks 4,084 professional contacts across them, including 1,791 with verified work emails. Berlin is the largest hub.

This list covers sustainable software companies headquartered in Germany, 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

227Companies

4,084Contacts tracked

1,791Verified emails

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The 25 largest sustainable software companies based in Germany

Ranked by team size

Top 25 of 227 sustainable software companies based in Germany, 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	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
2	Climatepartner	Indirect evidence	Munich, GermanyHQ checked Sep 29, 2026	501-1,000	376 contacts →
	Indirect evidence “ClimatePartner makes climate action valuable for every company at any stage of their journey.” Source: RevenueBase Database · checked Sep 29, 2026
3	Doubleslash Net-Business Gmbh	Indirect evidence	Friedrichshafen, GermanyHQ checked Sep 29, 2026	201-500	172 contacts →
	Indirect evidence “We create digital value.” Source: RevenueBase Database · checked Sep 29, 2026
4	Energielenker Gruppe	Indirect evidence	Münster, GermanyHQ checked Sep 29, 2026	201-500	152 contacts →
	Indirect evidence “Wir erschaffen Zukunft – mit erneuerbaren Energien und innovativen Lösungen!” Source: RevenueBase Database · checked Sep 29, 2026
5	ZOLAR	Indirect evidence	Berlin, GermanyHQ checked Sep 29, 2026	11-50	147 contacts →
	Indirect evidence “Wir bei zolar arbeiten an einer nachhaltigen Zukunft – mit smarter Technologie und echten Innovationen!” Source: RevenueBase Database · checked Sep 29, 2026
6	First Climate	Indirect evidence	Bad Vilbel, GermanyHQ checked Sep 29, 2026	51-200	79 contacts →
	Indirect evidence “With 25 years of experience, First Climate is a leading global provider of carbon management and green energy services for hundreds of corporate and public sector clients.” Source: RevenueBase Database · checked Sep 29, 2026
7	Verso Gmbh	Strong evidence	Munich, GermanyHQ checked Sep 29, 2026	51-200	72 contacts →
	Strong evidence “VERSO ist Sustainability-Software-Pionier und Full-Service-Anbieter für die Nachhaltige Transformation im Mittelstand.” Source: RevenueBase Database · checked Sep 29, 2026
8	TANSO	Partial evidence	Munich, GermanyHQ checked Sep 29, 2026	51-200	70 contacts →
	Partial evidence “Tanso is the ESG and carbon accounting software that industrial companies in DACH rely on to stay competitive and compliant.” Source: RevenueBase Database · checked Sep 29, 2026
9	Generic.De Software Technologies AG	Indirect evidence	Karlsruhe, GermanyHQ checked Sep 29, 2026	51-200	67 contacts →
	Indirect evidence “generic.de is an owner-managed IT service company based in Karlsruhe, Germany.” Source: RevenueBase Database · checked Sep 29, 2026
10	Planted	Partial evidence	Cologne, GermanyHQ checked Sep 29, 2026	11-50	61 contacts →
	Partial evidence “With Planted, we support companies holistically and individually in the implementation of their sustainability goals.” Source: RevenueBase Database · checked Sep 29, 2026
11	Code Gaia	Partial evidence	Munich, GermanyHQ checked Sep 29, 2026	51-200	59 contacts →
	Partial evidence “Code Gaia is the operating system for profitable ESG & EHS management - driven by intelligent software and personal support, for more growth and resilience.” Source: RevenueBase Database · checked Sep 29, 2026
12	Envistra Gmbh	Indirect evidence	Hürth, GermanyHQ checked Sep 29, 2026	51-200	57 contacts →
	Indirect evidence “Die Dienstleistungen der envistra GmbH zielen auf eine schnelle und langfristige Kostenreduktion und leisten einen wesentlichen Beitrag zu einer nachhaltigen…” Source: RevenueBase Database · checked Sep 29, 2026
13	Klafka & Hinz Energie-Informations-Systeme Gmbh	Partial evidence	Aachen, GermanyHQ checked Sep 29, 2026	51-200	55 contacts →
	Partial evidence “Willkommen bei FirstX, der innovativen Softwareplattform von Klafka & Hinz Energie-Informations-Systeme GmbH.” Source: RevenueBase Database · checked Sep 29, 2026
14	Ampeers Energy	Indirect evidence	Munich, GermanyHQ checked Sep 29, 2026	51-200	52 contacts →
	Indirect evidence “Der Gebäudesektor ist einer der Hauptverursacher klimaschädlicher CO₂-Emissionen.” Source: RevenueBase Database · checked Sep 29, 2026
15	Thinkstep	Partial evidence	Leinfelden-Echterdingen, GermanyHQ checked Sep 29, 2026	201-500	51 contacts →
	Partial evidence “thinkstep enables organizations worldwide to succeed sustainably.” Source: RevenueBase Database · checked Sep 29, 2026
16	Opesus	Indirect evidence	Augsburg, GermanyHQ checked Sep 29, 2026	51-200	48 contacts →
	Indirect evidence “opesus helps SAP customers answer the question every product compliance team faces today: what does a future-proof compliance strategy actually look like in the age of AI?” Source: RevenueBase Database · checked Sep 29, 2026
17	Futurecamp Climate Gmbh	Indirect evidence	Munich, GermanyHQ checked Sep 29, 2026	51-200	44 contacts →
	Indirect evidence “Nachhaltige Transformation für eine zukunftsfähige Wirtschaft Als spezialisierte Unternehmensberatung für Emissionshandel, CBAM, Treibhausgasbilanzierung, Energieeffizienz sowie…” Source: RevenueBase Database · checked Sep 29, 2026
18	Betterspace Gmbh	Partial evidence	Ilmenau, GermanyHQ checked Sep 29, 2026	51-200	43 contacts →
	Partial evidence “Betterspace develops smart software solutions that make your day-to-day work easier.” Source: RevenueBase Database · checked Sep 29, 2026
19	Seven2one Informationssysteme Gmbh	Strong evidence	Karlsruhe, GermanyHQ checked Sep 29, 2026	11-50	39 contacts →
	Strong evidence “INDIVIDUALIZED SOFTWARE FOR THE ENERGY TOPICS OF THE FUTURE Seven2one is passionate about developing software for a sustainable energy world The solution is our focus.” Source: RevenueBase Database · checked Sep 29, 2026
20	Leadership & Sustainability	Strong evidence	Sommerhausen, GermanyHQ checked Sep 29, 2026	51-200	38 contacts →
	Strong evidence “Company Overview Leadership & Sustainability delivers a broad and deep spectrum of Consulting, Empowerment, Sustainable Business Models and Software & Tools in the sustainability…” Source: RevenueBase Database · checked Sep 29, 2026
21	VTA Software & Service Gmbh	Partial evidence	Gelsenkirchen, GermanyHQ checked Sep 29, 2026	51-200	37 contacts →
	Partial evidence “Die VTA-Software & Service GmbH entwickelt in einem wachsenden Team von zurzeit 50 Mitarbeiter:innen digitale Lösungen und Dienstleistungen.” Source: RevenueBase Database · checked Sep 29, 2026
22	Berliner Energieagentur Gmbh BEA	Indirect evidence	Berlin, GermanyHQ checked Sep 29, 2026	11-50	35 contacts →
	Indirect evidence “Die Berliner Energieagentur GmbH (BEA) ist ein modernes Energiedienstleistungsunternehmen.” Source: RevenueBase Database · checked Sep 29, 2026
23	Allocnow	Strong evidence	Bonn, GermanyHQ checked Sep 29, 2026	11-50	35 contacts →
	Strong evidence “AllocNow is a cleantech software company enabling industrial sustainability at scale.” Source: RevenueBase Database · checked Sep 29, 2026
24	Global Climate	Partial evidence	Munich, GermanyHQ checked Sep 29, 2026	11-50	32 contacts →
	Partial evidence “Turning Data into Value – Aus CO₂-Daten wird unternehmerischer Mehrwert GLOBAL CLIMATE ist Softwareanbieter und Nachhaltigkeitsberatung in einem.” Source: RevenueBase Database · checked Sep 29, 2026
25	Coneva Gmbh	Indirect evidence	Munich, GermanyHQ checked Sep 29, 2026	11-50	31 contacts →
	Indirect evidence “High electricity consumption is no minor issue.” 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 227 sustainable software companies based in Germany

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Sustainable software companies based in Germany at a glance

As of Sep 29, 2026

43.9%Verified-email coverage

18.0Average contacts per company

11-50Median size (employees)

10.1%Largest-city concentration · Berlin

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

106

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for Germany, so it is reported there. Company counts and contact totals on this page are exact for Germany, over 227 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 Germany 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 Germany 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, 1,791 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 Germany?

RevenueBase identified 227 sustainable software companies headquartered in Germany 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?

Osapiens, headquartered in Mannheim, tops this list with the largest team on record.

Which city has the most sustainable software companies?

Berlin leads with 23 headquartered companies, followed by Munich (19) and Hamburg (13).

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 1,791 verified decision-maker contacts tracked across these 227 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.