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.
The 20 largest enterprise communication platform providers based in Germany
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,808 contacts → | ||||
Indirect evidence “Unify is now part of Mitel!” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 2 | 97 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, 2026Thanks. The Data Team will review it. | |||||
| 3 | 65 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, 2026Thanks. The Data Team will review it. | |||||
| 4 | 24 contacts → | ||||
Strong evidence “Sikom Software GmbH - Platform independent and flexible communication solutions” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 5 | 21 contacts → | ||||
Indirect evidence “Herzlich Willkommen bei CASERIS!” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 6 | 17 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, 2026Thanks. The Data Team will review it. | |||||
| 7 | 14 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, 2026Thanks. The Data Team will review it. | |||||
| 8 | 10 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, 2026Thanks. The Data Team will review it. | |||||
| 9 | 10 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, 2026Thanks. The Data Team will review it. | |||||
| 10 | 8 contacts → | ||||
Indirect evidence “Just #loveyourwork, because Work is more than to-do lists and meetings.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 11 | 7 contacts → | ||||
Indirect evidence “Die Bedürfnisse unserer Kunden bei der Kommunikation haben wir immer im Blick.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 12 | 7 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, 2026Thanks. The Data Team will review it. | |||||
| 13 | 6 contacts → | ||||
Indirect evidence “Wir sind GreenIT24!” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 14 | 4 contacts → | ||||
Indirect evidence “Hybrides Arbeiten, digitale Zusammenarbeit und moderne Arbeitswelten – all das braucht mehr als nur Technik.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 15 | 4 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, 2026Thanks. The Data Team will review it. | |||||
| 16 | 1 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, 2026Thanks. The Data Team will review it. | |||||
| 17 | 1 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 18 | 1 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, 2026Thanks. The Data Team will review it. | |||||
| 19 | 1 contacts → | ||||
Indirect evidence “Horizon44 is a venture building studio based in Munich, Germany.” Source: RevenueBase Database · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 20 | 1 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, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: enterprise communication platform providers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names enterprise communication platform providers.
- Partial evidence
- Its own public description names part of enterprise communication platform providers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name enterprise communication platform providers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 20 of 40 enterprise communication platform providers based in Germany
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Enterprise communication platform providers based in Germany at a glance
As of Sep 2, 2026Companies by employee count
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.
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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.
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