Company lists · Data refreshed September 2026

Top 20 Enterprise communication platform providers based in Germany

RevenueBase identified 40 enterprise communication platform providers headquartered in Germany as of September 2026 and tracks 2,203 professional contacts across them, including 149 with verified work emails and 227 with mobile numbers. Berlin is the largest hub.

This list covers enterprise communication platform 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 2, 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 RevenueBase Smart Search rating on every row Refreshed Sep 2, 2026 86% judged on-target in blind review
40Companies
2,203Contacts tracked
149Verified emails
227Mobile numbers
Explore this list → Free signup · no credit card · 500 free credits

The 20 largest enterprise communication platform providers based in Germany

Ranked by team size
Top 20 of 40 enterprise communication platform providers based in Germany, ranked by team size, largest first. Data refreshed Sep 2, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise communication platform 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, Germany5,001-10,0001,808 contacts →

Indirect evidence

“Unify is now part of Mitel!”

Source: RevenueBase Database · checked Sep 2, 2026
2Indirect evidenceLangenhagen, Germany51-20097 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 2, 2026
3Partial evidenceGermering, Germany51-20065 contacts →

Partial evidence

“With over a million installed licenses, C4B Com For Business AG is a market leader in CTI and Unified Communications software.”

Source: RevenueBase Database · checked Sep 2, 2026
4Strong evidenceHeidelberg, Germany51-20024 contacts →

Strong evidence

“Sikom Software GmbH - Platform independent and flexible communication solutions”

Source: RevenueBase Database · checked Sep 2, 2026
5Indirect evidenceStolberg Rhld., Germany51-20021 contacts →

Indirect evidence

“Herzlich Willkommen bei CASERIS!”

Source: RevenueBase Database · checked Sep 2, 2026
6Indirect evidenceMunchen, Germany11-5017 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 2, 2026
7Indirect evidenceHamburg, Germany201-50014 contacts →

Indirect evidence

“StarLeaf enables seamless collaboration through intelligently engineered, reliable meeting room systems, superior video conferencing, and secure messaging.”

Source: RevenueBase Database · checked Sep 2, 2026
8Indirect evidenceNuremberg, Germany11-5010 contacts →

Indirect evidence

“Sichere und hochskalierbare Videokommunikation für den öffentlichen Sektor Die Voigtmann GmbH ist ein führender Anbieter von Softwarelösungen und Dienstleistungen im Bereich der…”

Source: RevenueBase Database · checked Sep 2, 2026
9Strong evidenceKarlsruhe, Germany11-5010 contacts →

Strong evidence

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

Source: RevenueBase Database · checked Sep 2, 2026
10Indirect evidenceHamburg, Germany11-508 contacts →

Indirect evidence

“Just #loveyourwork, because Work is more than to-do lists and meetings.”

Source: RevenueBase Database · checked Sep 2, 2026
11Indirect evidenceLangenhagen, Germany11-507 contacts →

Indirect evidence

“Die Bedürfnisse unserer Kunden bei der Kommunikation haben wir immer im Blick.”

Source: RevenueBase Database · checked Sep 2, 2026
12Indirect evidenceSolms, Germany1-107 contacts →

Indirect evidence

“CollideX ist die Holding und der Entwickler der CollideX Cloud Engine, welche als Integrationsplattform Kommunikation und Kollaboration mit Datenmanagement und Business-Prozessen…”

Source: RevenueBase Database · checked Sep 2, 2026
13Indirect evidenceOsnabruck, Germany11-506 contacts →

Indirect evidence

“Wir sind GreenIT24!”

Source: RevenueBase Database · checked Sep 2, 2026
14Indirect evidenceHamburg, Germany51-2004 contacts →

Indirect evidence

“Hybrides Arbeiten, digitale Zusammenarbeit und moderne Arbeitswelten – all das braucht mehr als nur Technik.”

Source: RevenueBase Database · checked Sep 2, 2026
15Indirect evidenceHildesheim, Germany11-504 contacts →

Indirect evidence

“tk]-technologies GmbH - Ihr Partner für moderne Business-Kommunikation Seit 14 Jahren gestalten wir die Zukunft der Unternehmenskommunikation – mit fundierter Expertise, höchsten…”

Source: RevenueBase Database · checked Sep 2, 2026
16Indirect evidenceBerlin, Germany51-2001 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 2, 2026
17Indirect evidenceDeggendorf, Germany1-101 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 2, 2026
18Indirect evidenceDarmstadt, Germany1-101 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 2, 2026
19Indirect evidenceMunchen, Germany1-101 contacts →

Indirect evidence

“Horizon44 is a venture building studio based in Munich, Germany.”

Source: RevenueBase Database · checked Sep 2, 2026
20Indirect evidenceMoorrege, Germany1-101 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 2, 2026

Showing 20 of 40 enterprise communication platform providers based in Germany

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 149 reachable decision-makers.

Free signup · no credit card

View the full list →

Enterprise communication platform providers based in Germany at a glance

As of Sep 2, 2026
6.8%Verified-email coverage
10.3%Mobile-number coverage
55.1Average contacts per company
11-50Median size (employees)
12.5%Largest-city concentration · Berlin
Sep 2, 2026Page data refreshed

Companies by employee count

1-10
13
11-50
15
51-200
7
201-500
3
501-1,000
1
5,001-10,000
1

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 enterprise communication platform 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 “enterprise communication platform 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 enterprise communication platform 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 enterprise communication platform 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, 149 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 2, 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 enterprise communication platform 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 enterprise communication platform providers are there based in Germany?

RevenueBase identified 40 enterprise communication platform 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 enterprise communication platform providers?

Berlin leads with 5 headquartered companies, followed by Hamburg (4) and Langenhagen (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 149 verified decision-maker contacts tracked across these 40 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 2, 2026.

Ready to reach these companies? Verified emails and direct dials for all 40 enterprise communication platform providers based in Germany. Start with a free account, no credit card.

Download this list →

Related lists

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.