Company lists · Data refreshed September 2026

Top 25 Open source business software companies based in Germany

RevenueBase identified 57 company matches for open source business software companies associated with Germany as of September 2026 and tracks 1,149 professional contacts across them, including 415 with verified work emails and 32 with mobile numbers. Berlin is the largest hub.

This list covers company matches for open source business software companies associated with 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 September 5, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 5, 2026 How this list was built
57Companies
1,149Contacts tracked
415Verified emails
32Mobile numbers
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The 25 largest open source business software companies based in Germany

Ranked by team size
Top 25 of 57 company matches for open source business software companies based in Germany, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 5, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchKarlsruhe, GermanyHQ recorded Sep 5, 2026501-1,000251 contacts →

Exact match

“Since our founding in 1980, Abas has been a visionary and pioneer in the field of business software for production-related companies.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
2Exact matchBonn, GermanyHQ recorded Sep 5, 2026201-500100 contacts →

Exact match

“Scopevisio is the first german cloud based ERP, CRM + ECM Suite solution for SME businesses.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
3Exact matchKitzingen, GermanyHQ recorded Sep 5, 202651-20096 contacts →

Exact match

“weclapp is a leading cloud-based provider of CRM and ERP software designed for small and medium-sized businesses.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
4Exact matchZetel, GermanyHQ recorded Sep 5, 202651-20096 contacts →

Exact match

“ERP Solutions * CRM Solutions * Document Management System (DMS)* Business Intelligence Solution * Point of Sale Solution (POS)* Application Development Framework VIENNA Advantage…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
5Exact matchDetmold, GermanyHQ recorded Sep 5, 202651-20082 contacts →

Exact match

“orgaMAX ist Dein Softwareanbieter für die Herausforderungen im Arbeitsalltag.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
6Exact matchFulda, GermanyHQ recorded Sep 5, 2026201-50058 contacts →

Exact match

“Imprint: https://it-novum.com/impressum/ it-novum hilft Unternehmen, die Herausforderungen der Digitalisierung zu bewältigen.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
7Exact matchLangen, GermanyHQ recorded Sep 5, 202651-20047 contacts →

Exact match

“Durch Technologiebegeisterung, Kreativität und Kundennähe schaffen wir Zukunft.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
8Exact matchKarlsruhe, GermanyHQ recorded Sep 5, 202651-20038 contacts →

Exact match

“Der Anspruch der synyx GmbH & Co.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
9Exact matchHildesheim, GermanyHQ recorded Sep 5, 202651-20033 contacts →

Exact match

“Die eEvolution GmbH & Co.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
10Exact matchOstfildern, GermanyHQ recorded Sep 5, 202651-20033 contacts →

Exact match

“Seit über 40 Jahren machen wir mit unserem ERP-System FEPA die Unternehmenswelt ein Stück einfacher!”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
11Exact matchMagdeburg, GermanyHQ recorded Sep 5, 202651-20033 contacts →

Exact match

“WER sind wir Die SelectLine Software GmbH ist seit 25 Jahren Spezialist für kaufmännische Software.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
12Exact matchMunich, GermanyHQ recorded Sep 5, 202611-5023 contacts →

Exact match

“Myfactory is part of Forterro, a provider of software solutions for more than small and medium-sized enterprises across Europe.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
13Exact matchSalching, GermanyHQ recorded Sep 5, 202651-20023 contacts →

Exact match

“Business Solutions.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
14Exact matchBonn, GermanyHQ recorded Sep 5, 202611-5019 contacts →

Exact match

“metasfresh ERP is a modern Open Source ERP solution developed by metas GmbH (Bonn, Germany) for small and medium-sized enterprises (SMEs) in the food industry, wholesale, the…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
15Exact matchGerolzhofen, GermanyHQ recorded Sep 5, 202611-5018 contacts →

Exact match

“Die K&K Software AG aus Gerolzhofen existiert seit dem Jahr und ist in den Bereichen Open Source ERP (ERPNext), Softwareentwicklung, Internetanwendungen und Netzwerkbetreuung…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
16Exact matchAachen, GermanyHQ recorded Sep 5, 202611-5015 contacts →

Exact match

“Du hast Ärger mit Deiner aktuellen Software.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
17Exact matchKiel, GermanyHQ recorded Sep 5, 202611-5014 contacts →

Exact match

“ECC Digital baut Open-Source-Software, die nach dem Projekt nicht im Regal landet.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
18Exact matchLandau In Der Pfalz, GermanyHQ recorded Sep 5, 202651-20012 contacts →

Exact match

“Die GDI GmbH entwickelt seit ihrer Gründung 1979 am Standort in Landau in der Pfalz kaufmännische Software für mittelständische Unternehmen.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
19Exact matchGroßröhrsdorf, GermanyHQ recorded Sep 5, 202611-506 contacts →

Exact match

“Am 01.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
20Exact matchStuttgart, GermanyHQ recorded Sep 5, 202611-505 contacts →

Exact match

“avista.ERP – mit Sicherheit flexibler Nur wer auf dem neuesten Stand der Technik ist und sich von Althergebrachtem frei machen kann, hat genügend Spielraum, nicht die erste…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
21Exact matchHahnbach, GermanyHQ recorded Sep 5, 20261-104 contacts →

Exact match

“ERP/Hersteller”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
22Exact matchPforzheim, GermanyHQ recorded Sep 5, 20261-103 contacts →

Exact match

“Equitania Software GmbH is a computer software company based out of Weiherstraße 13, Pforzheim, Baden-Württemberg, Germany.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
23Exact matchSpaichingen, GermanyHQ recorded Sep 5, 202611-502 contacts →

Exact match

“majesty GmbH is the company responsible for the development and distribution of the majesty ERP-System.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
24Exact matchHamburg, GermanyHQ recorded Sep 5, 20261-102 contacts →

Exact match

“Open Source und Cloud-Computing für agile Business Applications Solutions.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
25Exact matchKempten (allgäu), GermanyHQ recorded Sep 5, 20261-101 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase

Showing 25 of 57 open source business software companies based in Germany

See the full list, filter by size, metro and specialty, and access 415 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Open source business software companies based in Germany at a glance

As of Sep 5, 2026
36.1%Verified-email coverage
2.8%Mobile-number coverage
20.2Average contacts per company
11-50Median size (employees)
10.5%Largest-city concentration · Berlin
Sep 5, 2026Page data refreshed

Companies by employee count

1-10
22
11-50
17
51-200
14
201-500
2
501-1,000
1

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

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 Germany whose business descriptions match “open source business software companies” 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 415 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 September 5, 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.

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 “open source business software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many open source business software companies are there based in Germany?

RevenueBase identified 57 company matches for open source business software companies associated with Germany as of September 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?

ABAS tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most open source business software companies?

Berlin leads with 6 company records, followed by Munich (3) and Aachen (2).

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 415 professional contacts with verified work emails tracked across these 57 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 September 5, 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 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.