Company lists · Data refreshed November 2026
Top 24 Sustainability nonprofits based in Hamburg, Germany
RevenueBase identified 103 company matches for sustainability nonprofits associated with Hamburg, Germany as of November 2026 and tracks 576 professional contacts across them, including 230 with verified work emails. Across Germany, Berlin is the largest hub for this category (206 companies); Hamburg follows with 103.
This list covers company matches for sustainability nonprofits associated with Hamburg, Germany, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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.
The 24 largest sustainability nonprofits based in Hamburg, Germany
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 61 contacts → | ||||
Exact match “Savings United is a global team connected by a vision for the future of work and commerce.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 49 contacts → | ||||
Exact match “As a management consultancy we have been tackling global challenges in environmental and human rights issues for over 20 years.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 31 contacts → | ||||
Exact match “Willkommen bei CIRCLE!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 31 contacts → | ||||
Exact match “GSCI Services has been incepted with a vision to provide access to global sustainability certification.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 19 contacts → | ||||
Exact match “Als Netzwerk setzt sich BAUM e.V.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 15 contacts → | ||||
Exact match “CBR Sustainability Partners is a pioneering consultancy dedicated to advancing green transition through technological innovation and sustainable practices across various…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 13 contacts → | ||||
Exact match “WIR SIND TEAM IBAK Seit gut 13 Jahren treiben wir mit Können und großer Begeisterung die Nachhaltigkeit im Bauwesen voran.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 11 contacts → | ||||
Exact match “Futur/io is a leading institute for sustainable innovation and leadership in Europe.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 11 contacts → | ||||
Exact match “Die Hamburger Klimaschutzstiftung ist eine etablierte Akteurin im Bereich der Bildung für nachhaltige Entwicklung (BNE) in der Metropolregion Hamburg, mit einem besonderen Fokus…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 10 contacts → | ||||
Exact match “Transformation neu denken – strategisch.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 9 contacts → | ||||
Exact match “Our ambition is a completely sustainably transformed world of sport.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 9 contacts → | ||||
Exact match “Bereits bei der Gründung der EGL 1969 ging es darum, soziale und ökologische Aspekte in den Mittelpunkt der Planung zu stellen und partizipative Strukturen in Planungsprozessen zu…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 7 contacts → | ||||
Exact match “Die Five Glaciers Consulting GmbH mit Sitz in Hamburg macht Nachhaltigkeit zum Schlüssel für langfristigen Unternehmenserfolg deutscher Mittelständler.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 7 contacts → | ||||
Exact match “MORGENWELT GmbH | Nachhaltige Event- & Beratungsagentur Wir beweisen, dass Nachhaltigkeit und Event-Highlights kein Widerspruch sind.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 7 contacts → | ||||
Exact match “IMPCT - Gemeinsam für eine nachhaltige Zukunft!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 6 contacts → | ||||
Exact match “We see ourselves as consultants and supporters of companies, municipalities and organizations in the realization of social-ecological change in society.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 6 contacts → | ||||
Exact match “Green Growth Futura ist ein auf Vermögensverwalter, Family Offices und Stiftungen spezialisiertes, unabhängiges Beratungsunternehmen für Sustainable Finance.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 5 contacts → | ||||
Exact match “Der SALZWASSER e.V.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 5 contacts → | ||||
Exact match “We are convinced by the principles of sustainability!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 5 contacts → | ||||
Exact match “Das natürliche und kulturelle Erbe unserer Welt bewahren und den Tourismus zukunftsfähig gestalten – dafür steht die Nachhaltigkeitsinitiative Futouris e.V.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 4 contacts → | ||||
Exact match “Der BUND Hamburg ist auf drei Ebenen tätig- Naturschutz: Amphibien, Insekten, Kiebitze & mehr: Wir sind direkt vor Ort aktiv.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 3 contacts → | ||||
Exact match “Gemeinsam geht mehr!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 3 contacts → | ||||
Exact match “Seit 2020 sorgen wir für eine bessere Orientierung im Nachhaltigkeitsmarkt, indem wir Greenwashing aufdecken und Verbraucher:innen zeigen, welche Lösungen wirklich nachhaltig sind.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 2 contacts → | ||||
Exact match “naturefit is an NGO with the goal to help other social initiatives and organizations to become sustainable in all three directions: economically, ecologically, social.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “sustainability nonprofits”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 24 of 103 sustainability nonprofits based in Hamburg, Germany
See the full list, filter by size, metro and specialty, and access 230 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Sustainability nonprofits based in Hamburg, Germany at a glance
As of Nov 6, 2026Companies by employee count
Email recency for this list is measured across the whole Germany list rather than for Hamburg, so it is reported there. Company counts and contact totals on this page are exact for Hamburg, over 103 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with Hamburg, Germany whose business descriptions match “sustainability nonprofits” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- 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 displayed company carries at least one verified work email. RevenueBase tracks 230 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Sustainability nonprofits by metro in Germany
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “sustainability nonprofits”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many sustainability nonprofits are there based in Hamburg, Germany?
RevenueBase identified 103 company matches for sustainability nonprofits associated with Hamburg, Germany as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Savings United Gmbh tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city in Germany has the most sustainability nonprofits?
Berlin leads Germany with 206 company records, followed by Hamburg (103) and Munich (83).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 230 professional contacts with verified work emails tracked across these 103 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 103 sustainability nonprofits based in Hamburg, Germany. Start with a free account, no credit card.
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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 SmartSearch, 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.
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Company intelligence · public preview
Top 24 sustainability nonprofits based in Hamburg, Germany
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 103 matching company records for sustainability nonprofits based in Hamburg, Germany, with 576 tracked contacts and 230 verified work emails.
This public preview shows 24 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 24 sustainability nonprofits based in Hamburg, Germany
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Savings United Gmbhsavings-united.comHQ: Hamburg, GermanyReported employees: 51-200 | Hamburg, Germany | 51-200 | Exact match | 61 contacts → |
“Savings United is a global team connected by a vision for the future of work and commerce.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Systain Consultingsystain.comHQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 49 contacts → |
“As a management consultancy we have been tackling global challenges in environmental and human rights issues for over 20 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Circlecircleconsulting.deHQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 31 contacts → |
“Willkommen bei CIRCLE!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Gsci Services Pvt. LTDgsciservices.comHQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 31 contacts → |
“GSCI Services has been incepted with a vision to provide access to global sustainability certification.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Baum E.Vbaumev.deHQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 19 contacts → |
“Als Netzwerk setzt sich BAUM e.V.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  CBR Sustainability Partnerscbr-partner.deHQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 15 contacts → |
“CBR Sustainability Partners is a pioneering consultancy dedicated to advancing green transition through technological innovation and sustainable practices across various…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Ibak Hamburg Gmbhibak-hamburg.com HQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 13 contacts → |
“WIR SIND TEAM IBAK Seit gut 13 Jahren treiben wir mit Können und großer Begeisterung die Nachhaltigkeit im Bauwesen voran.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Futur IO Institutefutur.ioHQ: Hamburg, GermanyReported employees: 1-10 | Hamburg, Germany | 1-10 | Exact match | 11 contacts → |
“Futur/io is a leading institute for sustainable innovation and leadership in Europe.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Hamburger Klimaschutzstiftung FÜR Bildung UND Nachhaltigkeithamburger-klimaschutzstiftung.deHQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 11 contacts → |
“Die Hamburger Klimaschutzstiftung ist eine etablierte Akteurin im Bereich der Bildung für nachhaltige Entwicklung (BNE) in der Metropolregion Hamburg, mit einem besonderen Fokus…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Nextra Consulting Gmbhnextra-consulting.comHQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 10 contacts → |
“Transformation neu denken – strategisch.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Sports20sports20.orgHQ: Hamburg, GermanyReported employees: 1-10 | Hamburg, Germany | 1-10 | Exact match | 9 contacts → |
“Our ambition is a completely sustainably transformed world of sport.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | HQ: Hamburg, GermanyReported employees: 51-200 | Hamburg, Germany | 51-200 | Exact match | 9 contacts → |
“Bereits bei der Gründung der EGL 1969 ging es darum, soziale und ökologische Aspekte in den Mittelpunkt der Planung zu stellen und partizipative Strukturen in Planungsprozessen zu…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Five Glaciers Consultingfiveglaciers.comHQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 7 contacts → |
“Die Five Glaciers Consulting GmbH mit Sitz in Hamburg macht Nachhaltigkeit zum Schlüssel für langfristigen Unternehmenserfolg deutscher Mittelständler.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Morgenwelt Gmbhmorgenwelt.deHQ: Hamburg, GermanyReported employees: 1-10 | Hamburg, Germany | 1-10 | Exact match | 7 contacts → |
“MORGENWELT GmbH | Nachhaltige Event- & Beratungsagentur Wir beweisen, dass Nachhaltigkeit und Event-Highlights kein Widerspruch sind.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Impct Ggmbhimpct.helpHQ: Hamburg, GermanyReported employees: 1-10 | Hamburg, Germany | 1-10 | Exact match | 7 contacts → |
“IMPCT - Gemeinsam für eine nachhaltige Zukunft!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Corsuscorsus.deHQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 6 contacts → |
“We see ourselves as consultants and supporters of companies, municipalities and organizations in the realization of social-ecological change in society.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Green Growth Futura Gmbhgreengrowthfutura.deHQ: Hamburg, GermanyReported employees: 1-10 | Hamburg, Germany | 1-10 | Exact match | 6 contacts → |
“Green Growth Futura ist ein auf Vermögensverwalter, Family Offices und Stiftungen spezialisiertes, unabhängiges Beratungsunternehmen für Sustainable Finance.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Salzwasser Vereinsalzwasser-ev.orgHQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 5 contacts → |
“Der SALZWASSER e.V.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Sumations Gmbhsumations.comHQ: Hamburg, GermanyReported employees: 1-10 | Hamburg, Germany | 1-10 | Exact match | 5 contacts → |
“We are convinced by the principles of sustainability!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Futouris E.Vfutouris.orgHQ: Hamburg, GermanyReported employees: 1-10 | Hamburg, Germany | 1-10 | Exact match | 5 contacts → |
“Das natürliche und kulturelle Erbe unserer Welt bewahren und den Tourismus zukunftsfähig gestalten – dafür steht die Nachhaltigkeitsinitiative Futouris e.V.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Bund Hamburgbund-hamburg.deHQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 4 contacts → |
“Der BUND Hamburg ist auf drei Ebenen tätig- Naturschutz: Amphibien, Insekten, Kiebitze & mehr: Wir sind direkt vor Ort aktiv.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Gaia Hive E.Vgaia-hive.deHQ: Hamburg, GermanyReported employees: 1-10 | Hamburg, Germany | 1-10 | Exact match | 3 contacts → |
“Gemeinsam geht mehr!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  FLIPletsflip.deHQ: Hamburg, GermanyReported employees: 1-10 | Hamburg, Germany | 1-10 | Exact match | 3 contacts → |
“Seit 2020 sorgen wir für eine bessere Orientierung im Nachhaltigkeitsmarkt, indem wir Greenwashing aufdecken und Verbraucher:innen zeigen, welche Lösungen wirklich nachhaltig sind.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  naturefit.orgnaturefit.orgHQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 2 contacts → |
“naturefit is an NGO with the goal to help other social initiatives and organizations to become sustainable in all three directions: economically, ecologically, social.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 24 of 103 company matches
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Sustainability nonprofits: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
102 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole Germany list rather than for Hamburg, so it is reported there. Company counts and contact totals on this page are exact for Hamburg, over 103 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Sustainability nonprofits by metro in Germany
Questions about this company list
What does Exact match mean for sustainability nonprofits?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many sustainability nonprofits did RevenueBase find based in Hamburg, Germany?
The saved snapshot records 103 matching company records, 576 tracked contacts and 230 verified emails. The public preview displays 24 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Sustainability nonprofits by geography
- Sustainability nonprofits based in Buenos Aires, Argentina
- Sustainability nonprofits based in Brisbane, Australia
- Sustainability nonprofits based in Melbourne, Australia
- Sustainability nonprofits based in Perth, Australia
- Sustainability nonprofits based in Sydney, Australia
- Sustainability nonprofits based in Vienna, Austria
- Sustainability nonprofits based in Brussels, Belgium
- Sustainability nonprofits based in Belo Horizonte, Brazil
- Sustainability nonprofits based in Curitiba, Brazil
- Sustainability nonprofits based in Florianopolis, Brazil
- Sustainability nonprofits based in Porto Alegre, Brazil
- Sustainability nonprofits based in Rio De Janeiro, Brazil
Cite this list
RevenueBase Data Team. Top 24 sustainability nonprofits based in Hamburg, Germany. Snapshot: November 6, 2026. https://revenuebase.ai/companies/sustainability-nonprofits/germany/hamburg.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
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- Lists A-Z
- New lists
- Sustainability nonprofits based in Buenos Aires, Argentina
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Company intelligence · public preview
Top 24 sustainability nonprofits based in Hamburg, Germany
RevenueBase records 103 matching company records for sustainability nonprofits based in Hamburg, Germany, with 576 tracked contacts and 230 verified work emails.
This public preview shows 24 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 24 sustainability nonprofits based in Hamburg, Germany
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Savings United Gmbhsavings-united.com HQ: Hamburg, GermanyReported employees: 51-200 | Hamburg, Germany | 51-200 | Exact match | 61 contacts → |
“Savings United is a global team connected by a vision for the future of work and commerce.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Systain Consultingsystain.com HQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 49 contacts → |
“As a management consultancy we have been tackling global challenges in environmental and human rights issues for over 20 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Circlecircleconsulting.de HQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 31 contacts → |
“Willkommen bei CIRCLE!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Gsci Services Pvt. LTDgsciservices.com HQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 31 contacts → |
“GSCI Services has been incepted with a vision to provide access to global sustainability certification.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Baum E.Vbaumev.de HQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 19 contacts → |
“Als Netzwerk setzt sich BAUM e.V.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | CBR Sustainability Partnerscbr-partner.de HQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 15 contacts → |
“CBR Sustainability Partners is a pioneering consultancy dedicated to advancing green transition through technological innovation and sustainable practices across various…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Ibak Hamburg Gmbhibak-hamburg.com HQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 13 contacts → |
“WIR SIND TEAM IBAK Seit gut 13 Jahren treiben wir mit Können und großer Begeisterung die Nachhaltigkeit im Bauwesen voran.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Futur IO Institutefutur.io HQ: Hamburg, GermanyReported employees: 1-10 | Hamburg, Germany | 1-10 | Exact match | 11 contacts → |
“Futur/io is a leading institute for sustainable innovation and leadership in Europe.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Hamburger Klimaschutzstiftung FÜR Bildung UND Nachhaltigkeithamburger-klimaschutzstiftung.de HQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 11 contacts → |
“Die Hamburger Klimaschutzstiftung ist eine etablierte Akteurin im Bereich der Bildung für nachhaltige Entwicklung (BNE) in der Metropolregion Hamburg, mit einem besonderen Fokus…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Nextra Consulting Gmbhnextra-consulting.com HQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 10 contacts → |
“Transformation neu denken – strategisch.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Sports20sports20.org HQ: Hamburg, GermanyReported employees: 1-10 | Hamburg, Germany | 1-10 | Exact match | 9 contacts → |
“Our ambition is a completely sustainably transformed world of sport.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | HQ: Hamburg, GermanyReported employees: 51-200 | Hamburg, Germany | 51-200 | Exact match | 9 contacts → |
“Bereits bei der Gründung der EGL 1969 ging es darum, soziale und ökologische Aspekte in den Mittelpunkt der Planung zu stellen und partizipative Strukturen in Planungsprozessen zu…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Five Glaciers Consultingfiveglaciers.com HQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 7 contacts → |
“Die Five Glaciers Consulting GmbH mit Sitz in Hamburg macht Nachhaltigkeit zum Schlüssel für langfristigen Unternehmenserfolg deutscher Mittelständler.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Morgenwelt Gmbhmorgenwelt.de HQ: Hamburg, GermanyReported employees: 1-10 | Hamburg, Germany | 1-10 | Exact match | 7 contacts → |
“MORGENWELT GmbH | Nachhaltige Event- & Beratungsagentur Wir beweisen, dass Nachhaltigkeit und Event-Highlights kein Widerspruch sind.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Impct Ggmbhimpct.help HQ: Hamburg, GermanyReported employees: 1-10 | Hamburg, Germany | 1-10 | Exact match | 7 contacts → |
“IMPCT - Gemeinsam für eine nachhaltige Zukunft!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Corsuscorsus.de HQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 6 contacts → |
“We see ourselves as consultants and supporters of companies, municipalities and organizations in the realization of social-ecological change in society.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Green Growth Futura Gmbhgreengrowthfutura.de HQ: Hamburg, GermanyReported employees: 1-10 | Hamburg, Germany | 1-10 | Exact match | 6 contacts → |
“Green Growth Futura ist ein auf Vermögensverwalter, Family Offices und Stiftungen spezialisiertes, unabhängiges Beratungsunternehmen für Sustainable Finance.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Salzwasser Vereinsalzwasser-ev.org HQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 5 contacts → |
“Der SALZWASSER e.V.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Sumations Gmbhsumations.com HQ: Hamburg, GermanyReported employees: 1-10 | Hamburg, Germany | 1-10 | Exact match | 5 contacts → |
“We are convinced by the principles of sustainability!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Futouris E.Vfutouris.org HQ: Hamburg, GermanyReported employees: 1-10 | Hamburg, Germany | 1-10 | Exact match | 5 contacts → |
“Das natürliche und kulturelle Erbe unserer Welt bewahren und den Tourismus zukunftsfähig gestalten – dafür steht die Nachhaltigkeitsinitiative Futouris e.V.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Bund Hamburgbund-hamburg.de HQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 4 contacts → |
“Der BUND Hamburg ist auf drei Ebenen tätig- Naturschutz: Amphibien, Insekten, Kiebitze & mehr: Wir sind direkt vor Ort aktiv.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Gaia Hive E.Vgaia-hive.de HQ: Hamburg, GermanyReported employees: 1-10 | Hamburg, Germany | 1-10 | Exact match | 3 contacts → |
“Gemeinsam geht mehr!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | FLIPletsflip.de HQ: Hamburg, GermanyReported employees: 1-10 | Hamburg, Germany | 1-10 | Exact match | 3 contacts → |
“Seit 2020 sorgen wir für eine bessere Orientierung im Nachhaltigkeitsmarkt, indem wir Greenwashing aufdecken und Verbraucher:innen zeigen, welche Lösungen wirklich nachhaltig sind.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | naturefit.orgnaturefit.org HQ: Hamburg, GermanyReported employees: 11-50 | Hamburg, Germany | 11-50 | Exact match | 2 contacts → |
“naturefit is an NGO with the goal to help other social initiatives and organizations to become sustainable in all three directions: economically, ecologically, social.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 24 of 103 company matches
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Sustainability nonprofits: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
102 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole Germany list rather than for Hamburg, so it is reported there. Company counts and contact totals on this page are exact for Hamburg, over 103 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Sustainability nonprofits by metro in Germany
Questions about this company list
What does Exact match mean for sustainability nonprofits?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many sustainability nonprofits did RevenueBase find based in Hamburg, Germany?
The saved snapshot records 103 matching company records, 576 tracked contacts and 230 verified emails. The public preview displays 24 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 24 sustainability nonprofits based in Hamburg, Germany. Snapshot: November 6, 2026. https://revenuebase.ai/companies/sustainability-nonprofits/germany/hamburg.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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