Company lists · Data refreshed September 2026

Top 18 Ccaas providers based in Germany

RevenueBase identified 39 ccaas providers headquartered in Germany as of September 2026 and tracks 2,222 professional contacts across them, including 162 with verified work emails. Darmstadt is the largest hub.

This list covers ccaas providers 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 21, 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 21, 2026 86% judged on-target in blind review
39Companies
2,222Contacts tracked
162Verified emails
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The 18 largest ccaas providers based in Germany

Ranked by team size
Top 18 of 39 ccaas providers based in Germany, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to ccaas providers: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceMunich, GermanyHQ checked Sep 21, 20265,001-10,0001,812 contacts →

Indirect evidence

“Unify is now part of Mitel!”

Source: RevenueBase Database · checked Sep 21, 2026
2Indirect evidenceSindelfingen, GermanyHQ checked Sep 21, 202651-20096 contacts →

Indirect evidence

“innovaphone has been playing a decisive role in driving the development of IP telephony and digital transformation for more than 25 years now and is a leading European provider of…”

Source: RevenueBase Database · checked Sep 21, 2026
3Indirect evidenceBochum, GermanyHQ checked Sep 21, 20261,001-5,00075 contacts →

Indirect evidence

“Enreach ist ein europaweit führender Anbieter von Unified-Communications- und Cloud-Contact-Center-Lösungen.”

Source: RevenueBase Database · checked Sep 21, 2026
4Indirect evidenceDeggendorf, GermanyHQ checked Sep 21, 202611-5027 contacts →

Indirect evidence

“Founded in 1997, pascom are the PASCOM ONE Cloud Telephony solution for business.”

Source: RevenueBase Database · checked Sep 21, 2026
5Indirect evidenceDarmstadt, GermanyHQ checked Sep 21, 202611-5024 contacts →

Indirect evidence

“Cloud- und On-Premise-Lösungen - Technologie verwandelt Die toplink-Gruppe etwas genauer betrachtet: toplink GmbH - die Cloud Company Bereits 2005 vermarktet die toplink GmbH die…”

Source: RevenueBase Database · checked Sep 21, 2026
6Indirect evidenceMünchen, GermanyHQ checked Sep 21, 202611-5017 contacts →

Indirect evidence

“Stackfield is an All-in-One Collaboration Tool from Germany and combines all the features teams need to collaborate: Team chat, task and project management, video conferencing…”

Source: RevenueBase Database · checked Sep 21, 2026
7Indirect evidenceKarlsruhe, GermanyHQ checked Sep 21, 202611-5010 contacts →

Indirect evidence

“Crown is a pioneer in cloud communications and develops highly available, scalable platform technologies for telecommunications providers.”

Source: RevenueBase Database · checked Sep 21, 2026
8Indirect evidenceKölln-reisiek, GermanyHQ checked Sep 21, 202611-508 contacts →

Indirect evidence

“Was macht eigentlich CallOne?”

Source: RevenueBase Database · checked Sep 21, 2026
9Indirect evidenceOsnabrück, GermanyHQ checked Sep 21, 202611-506 contacts →

Indirect evidence

“Wir sind GreenIT24!”

Source: RevenueBase Database · checked Sep 21, 2026
10Indirect evidenceBretzfeld, GermanyHQ checked Sep 21, 202611-506 contacts →

Indirect evidence

“Vom Internet über die Festnetz- und Mobilfunktelefonie, die Telefonanlage in der Cloud, bis zur passenden und individuellen Lösung für Ihr Unternehmen – Flexibilität, die sich…”

Source: RevenueBase Database · checked Sep 21, 2026
11Indirect evidenceKiel, GermanyHQ checked Sep 21, 20261-105 contacts →

Indirect evidence

“Telefonie soll Unternehmen und Kunden dienen – und nicht umgekehrt.”

Source: RevenueBase Database · checked Sep 21, 2026
12Indirect evidenceFrankfurt, GermanyHQ checked Sep 21, 202611-504 contacts →

Indirect evidence

“Chorus Call ist ein führendes Unternehmen im Bereich globaler Telekonferenzen, Collaborations-Tools und Event Services.”

Source: RevenueBase Database · checked Sep 21, 2026
13Indirect evidenceDuisburg, GermanyHQ checked Sep 21, 20261-103 contacts →

Indirect evidence

“With our universal elevator gateway - the eleon S1 - we provide Connectivity as a Service (CaaS) to anyone who is is looking for a scalable, cost efficient and full market…”

Source: RevenueBase Database · checked Sep 21, 2026
14Indirect evidenceStuttgart, GermanyHQ checked Sep 21, 20261-102 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026
15Indirect evidenceBerlin, GermanyHQ checked Sep 21, 202651-2001 contacts →

Indirect evidence

“Kwebbl ist eine einheitliche Cloud-Kommunikationsplattform, die speziell für Service Provider und IT-Händler entwickelt wurde.”

Source: RevenueBase Database · checked Sep 21, 2026
16Indirect evidenceMoorrege, GermanyHQ checked Sep 21, 20261-101 contacts →

Indirect evidence

“Verba-Com versteht sich als beständiger und zuverlässiger Anbieter / Partner am sich permanent verändernden IT & Bürokommunikationsmarkt.”

Source: RevenueBase Database · checked Sep 21, 2026
17Indirect evidenceDarmstadt, GermanyHQ checked Sep 21, 20261-101 contacts →

Indirect evidence

“VoIP Telefonie und UC & C Lösungen inklusive Videokonferenz, Chat, Screen-Sharing und Datenübertragung direkt über Ihre Webseite On Premise Desktops im Home Office mit Parallels…”

Source: RevenueBase Database · checked Sep 21, 2026
18Indirect evidenceDeggendorf, GermanyHQ checked Sep 21, 20261-101 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026

Showing 18 of 39 ccaas providers based in Germany

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Ccaas providers based in Germany at a glance

As of Sep 21, 2026
7.3%Verified-email coverage
57.0Average contacts per company
11-50Median size (employees)
7.7%Largest-city concentration · Darmstadt
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
15
11-50
16
51-200
3
201-500
2
501-1,000
1
1,001-5,000
1
5,001-10,000
1

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 39 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 ccaas providers, 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 “ccaas providers”. 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 ccaas providers), 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 ccaas providers, 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, 162 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 21, 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 ccaas providers, 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 ccaas providers are there based in Germany?

RevenueBase identified 39 ccaas providers 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?

UNIFY, headquartered in Munich, tops this list with the largest team on record.

Which city has the most ccaas providers?

Darmstadt leads with 3 headquartered companies, followed by Karlsruhe (3) and Berlin (2).

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 162 verified decision-maker contacts tracked across these 39 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 21, 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.