Company lists · Data refreshed September 2026

Top 15 Open source CRM software companies based in Germany

RevenueBase identified 35 company matches for open source CRM software companies associated with Germany as of September 2026 and tracks 703 professional contacts across them, including 305 with verified work emails and 16 with mobile numbers. Cologne is the largest hub.

This list covers company matches for open source CRM 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
35Companies
703Contacts tracked
305Verified emails
16Mobile numbers
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The 15 largest open source CRM software companies based in Germany

Ranked by team size
Top 15 of 35 company matches for open source CRM 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, 2026201-500278 contacts →

Exact match

“The leading provider of CRM solutions for small and medium-sized enterprises In recent years, CAS Software AG has become the German, market-leading innovator for customer…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
2Exact matchGeisenhausen, GermanyHQ recorded Sep 5, 202651-200101 contacts →

Exact match

“Die ADITO Software GmbH ist führender Hersteller hochflexibler Business, CRM- und xRM-Software.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
3Exact 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
4Exact 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
5Exact matchStuttgart, GermanyHQ recorded Sep 5, 202611-5021 contacts →

Exact match

“Bereits seit 1998 fokussiert sich die mpl Software GmbH auf Vertrieb, Beratung, Einführung, Betreuung und Weiterentwicklung von CRM-Lösungen im Mittelstand.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
6Exact 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
7Exact 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
8Exact matchKandel, GermanyHQ recorded Sep 5, 202611-5017 contacts →

Exact match

“Wir sind- CRM-Hersteller seit über 30 Jahren- ein Team aus 50 kreativen Köpfen, das mit viel Leidenschaft an und mit unserer CRM-Lösung arbeitet- auf den Mittelstand in Industrie…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
9Exact matchCologne, GermanyHQ recorded Sep 5, 202611-507 contacts →

Exact match

“Websoftware to improve communication and collaboration within small teams.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
10Exact matchBielefeld, GermanyHQ recorded Sep 5, 202611-507 contacts →

Exact match

“Samdock is the most modern CRM system for small businesses and impresses with its simple and intuitive use.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
11Exact 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
12Exact matchBerlin, GermanyHQ recorded Sep 5, 202611-503 contacts →

Exact match

“Kerngeschäft der orgAnice Solution AG mit Sitz in Berlin-Steglitz ist die Entwicklung, die Herstellung und der Vertrieb von Software und Software-Lizenzen, die…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
13Exact matchDusslingen, GermanyHQ recorded Sep 5, 20261-103 contacts →

Exact match

“Salestron is a dynamic company and software provider of SalesCRM solutions, specializing in assisting sales teams worldwide with their daily tasks.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
14Exact 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
15Exact matchHamburg, GermanyHQ recorded Sep 5, 20261-101 contacts →

Exact match

“Wice CRM hilft Ihnen, Vertriebsaktivitäten zu steuern und planvoll durchzuführen.”

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

Showing 15 of 35 open source CRM software companies based in Germany

See the full list, filter by size, metro and specialty, and access 305 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Open source CRM software companies based in Germany at a glance

As of Sep 5, 2026
43.4%Verified-email coverage
2.3%Mobile-number coverage
20.1Average contacts per company
11-50Median size (employees)
8.6%Largest-city concentration · Cologne
Sep 5, 2026Page data refreshed

Companies by employee count

1-10
13
11-50
17
51-200
4
201-500
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 CRM 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 305 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 CRM software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 35 company matches for open source CRM 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?

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

Which city has the most open source CRM software companies?

Cologne leads with 3 company records, followed by Berlin (2) and Hamburg (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 305 professional contacts with verified work emails tracked across these 35 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.