Company lists · Data refreshed September 2026

Top 25 Unified communications consulting firms based in Germany

RevenueBase identified 88 company matches for unified communications consulting firms associated with Germany as of September 2026 and tracks 1,282 professional contacts across them, including 586 with verified work emails. Berlin is the largest hub.

This list covers company matches for unified communications consulting firms 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 29, 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 29, 2026 How this list was built
88Companies
1,282Contacts tracked
586Verified emails
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The 25 largest unified communications consulting firms based in Germany

Ranked by team size
Top 25 of 88 company matches for unified communications consulting firms based in Germany, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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 matchHanover, GermanyHQ recorded Sep 29, 20261,001-5,000212 contacts →

Exact match

“Als zuverlässiger Partner mit einer breiten Technik-Expertise in den Leistungsfeldern IT Solutions, Unified Communication & Collaboration Solutions und Security Technology…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2Exact matchDüsseldorf, GermanyHQ recorded Sep 29, 2026201-500153 contacts →

Exact match

“Transform your business DeTeWe Communications have many years of experience in delivering tailored, integrated solutions for their clients internationally 365 days a year, 24…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3Exact matchSindelfingen, GermanyHQ recorded Sep 29, 202651-20096 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchDreieich, GermanyHQ recorded Sep 29, 202651-20091 contacts →

Exact match

“Wir bei AVI-SPL verstehen uns nicht nur als Technologieanbieter, sondern auch als Unternehmen, das den Menschen bei der Arbeit unterstützt.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact match22529, GermanyHQ recorded Sep 29, 2026201-50086 contacts →

Exact match

“We are DEKOM – your global partner for hybrid collaboration and smart meeting solutions.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6Exact matchBochum, GermanyHQ recorded Sep 29, 20261,001-5,00075 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7Exact matchMuenzenberg, GermanyHQ recorded Sep 29, 202651-20050 contacts →

Exact match

“Die nächste wichtige IT-Entscheidung steht an?”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchReinbek, GermanyHQ recorded Sep 29, 202651-20027 contacts →

Exact match

“Agiles Arbeiten.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9Exact matchHamburg, GermanyHQ recorded Sep 29, 202651-20026 contacts →

Exact match

“SYNO steht für Synergien.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10Exact matchStolberg (rhld.), GermanyHQ recorded Sep 29, 202611-5022 contacts →

Exact match

“Herzlich Willkommen bei CASERIS!”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchBörwang, GermanyHQ recorded Sep 29, 202651-20021 contacts →

Exact match

“Die OFF Telekommunikation GmbH ist DER Partner für moderne Kommunikationslösungen.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12Exact matchDüsseldorf, GermanyHQ recorded Sep 29, 202611-5020 contacts →

Exact match

“Wir beraten.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13Exact matchMunich, GermanyHQ recorded Sep 29, 202611-5017 contacts →

Exact match

“Vistafon is a consulting firm and solution provider for videoconferencing, collaboration tools and digital transformation headquartered in Munich.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchRatingen, GermanyHQ recorded Sep 29, 202611-5017 contacts →

Exact match

“Die bluvo AG ist ein Inhaber-geführtes IT Systemhaus aus Ratingen (NRW).”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15Exact matchSchwaig Bei Nürnberg, GermanyHQ recorded Sep 29, 202611-5015 contacts →

Exact match

“COEO Systemhaus GmbH is an information technology and services company based out of Schwaig, Bavaria, Germany.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchStuttgart, GermanyHQ recorded Sep 29, 202611-5011 contacts →

Exact match

“Unser Hobby ist unser Beruf.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchMünchen-unterföhring, GermanyHQ recorded Sep 29, 202611-5011 contacts →

Exact match

“Wir verbinden Menschen – ob Local oder Global Player, vom Start-up bis zum Großkonzern.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchErkrath-unterfeldhaus, GermanyHQ recorded Sep 29, 202651-20010 contacts →

Exact match

“Telefonanlagen, Cloud-Telefonie, ITK, Unify Office by RingCentral, Microsoft Teams, Atos Unify, Estos, Alcatel, Mitos, Innovaphone, Unified Communications, Kollaboration…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19Exact matchOsnabrück, GermanyHQ recorded Sep 29, 202611-508 contacts →

Exact match

“Beratung, Planung & Realisierung von ITK Systemen Hard- & Softwarelösungen Installation und Wartung von Telefonanlagen, Software- und UC-Lösungen Seit über 25 Jahren ist die DEK…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20Exact matchInning Am Ammersee, GermanyHQ recorded Sep 29, 202611-508 contacts →

Exact match

“PMG Lösungen schaffen den Mehrwert, effizient zu sein und hörbar zu überzeugen.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21Exact matchLangenhagen, GermanyHQ recorded Sep 29, 202611-507 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact match29331 Lachendorf, GermanyHQ recorded Sep 29, 202611-506 contacts →

Exact match

“Steffel entwickelt effiziente und zukunftsfähige Komplettlösungen für den gesamten Kommunikationsbereich – von der Vernetzung verschiedener Standorte über Unified Communications…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchDortmund, GermanyHQ recorded Sep 29, 20261-106 contacts →

Exact match

“LocaNet, founded in 1996 and based in Dortmund, Germany, provides a wide range of VoIP based IT products and services.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchMunich, GermanyHQ recorded Sep 29, 20261-106 contacts →

Exact match

“MKJC ist Ihr Partner für professionelle IT, Voice- und SW-Lösungen ob Inhouse oder aus der Cloud.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25Exact matchDülmen, GermanyHQ recorded Sep 29, 202611-505 contacts →

Exact match

“beckconsult ist ein Beratungsunternehmen für IT und Telekommunikation.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 25 of 88 unified communications consulting firms based in Germany

See the full list, filter by size, metro and specialty, and access 586 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Unified communications consulting firms based in Germany at a glance

As of Sep 29, 2026
45.7%Verified-email coverage
14.6Average contacts per company
11-50Median size (employees)
8.0%Largest-city concentration · Berlin
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
34
11-50
36
51-200
9
201-500
5
501-1,000
1
1,001-5,000
2

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 88 companies.

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 “unified communications consulting firms” 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 586 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 29, 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 “unified communications consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many unified communications consulting firms are there based in Germany?

RevenueBase identified 88 company matches for unified communications consulting firms 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?

Spie ICS Spie Information & Communication Services Gmbh tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most unified communications consulting firms?

Berlin leads with 7 company records, followed by Munich (6) 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 586 professional contacts with verified work emails tracked across these 88 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 29, 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.