Company lists · Data refreshed September 2026

Top 25 Communication system integrators based in Germany

Name: Communication system integrators based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 603 companies tracked

RevenueBase identified 603 communication system integrators headquartered in Germany as of September 2026 and tracks 9,400 professional contacts across them, including 4,974 with verified work emails. Berlin is the largest hub.

This list covers communication system integrators 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 19, 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 19, 2026 86% judged on-target in blind review

603Companies

9,400Contacts tracked

4,974Verified emails

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The 25 largest communication system integrators based in Germany

Ranked by team size

Top 25 of 603 communication system integrators based in Germany, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to communication system integrators: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	SVA System Vertrieb Alexander Gmbh	Strong evidence	Wiesbaden, GermanyHQ checked Sep 19, 2026	1,001-5,000	2,452 contacts →
	Strong evidence “Imprint: SVA is one of the leading system integrators in Germany.” Source: RevenueBase Database · checked Sep 19, 2026
2	Controlware	Strong evidence	Dietzenbach, GermanyHQ checked Sep 19, 2026	1,001-5,000	574 contacts →
	Strong evidence “Controlware is one of the leading independent system integrators and managed service providers in Germany.” Source: RevenueBase Database · checked Sep 19, 2026
3	Axians Germany	Partial evidence	Frankfurt Am Main, GermanyHQ checked Sep 19, 2026	1,001-5,000	403 contacts →
	Partial evidence “AXIANS is the corporate brand for network infrastrucutures and corporate communications of VINCI Energies, one of the leading European providers of energy and information…” Source: RevenueBase Database · checked Sep 19, 2026
4	Plusnet Gmbh	Indirect evidence	Köln, GermanyHQ checked Sep 19, 2026	201-500	248 contacts →
	Indirect evidence “Die Plusnet GmbH, eine Tochtergesellschaft der EnBW, ist ein deutsches Telekommunikationsunternehmen mit Fokus auf Geschäftskunden.” Source: RevenueBase Database · checked Sep 19, 2026
5	Medialine Group	Partial evidence	Bad Sobernheim, GermanyHQ checked Sep 19, 2026	501-1,000	246 contacts →
	Partial evidence “Welcome to Medialine AG – your IT & C system house.” Source: RevenueBase Database · checked Sep 19, 2026
6	Spie ICS Spie Information & Communication Services Gmbh	Partial evidence	Hannover, GermanyHQ checked Sep 19, 2026	1,001-5,000	212 contacts →
	Partial evidence “Als zuverlässiger Partner mit einer breiten Technik-Expertise in den Leistungsfeldern IT Solutions, Unified Communication & Collaboration Solutions und Security Technology…” Source: RevenueBase Database · checked Sep 19, 2026
7	Avodaq AG	Indirect evidence	Hamburg, GermanyHQ checked Sep 19, 2026	201-500	191 contacts →
	Indirect evidence “avodaq AG is one of the leading German providers of modern IT infrastructure for multinational companies and service providers.” Source: RevenueBase Database · checked Sep 19, 2026
8	SAR Elektronic Gmbh	Indirect evidence	Dingolfing, GermanyHQ checked Sep 19, 2026	501-1,000	153 contacts →
	Indirect evidence “SAR Group – Wertschöpfung durch Automatisierung Die SAR Group ist seit 1985 Ihr zuverlässiger Partner für professionelle Industrie- und Prozessautomatisierung.” Source: RevenueBase Database · checked Sep 19, 2026
9	Ostertag Detewe	Partial evidence	Düsseldorf, GermanyHQ checked Sep 19, 2026	201-500	153 contacts →
	Partial evidence “Transform your business DeTeWe Communications have many years of experience in delivering tailored, integrated solutions for their clients internationally 365 days a year, 24…” Source: RevenueBase Database · checked Sep 19, 2026
10	BFE Studio UND Medien Systeme Gmbh	Strong evidence	Mainz, GermanyHQ checked Sep 19, 2026	51-200	120 contacts →
	Strong evidence “BFE Studio und Medien Systeme GmbH is a manufacturer-independent broadcast system integrator with more than 50 years of experience in the planning and implementation of complex…” Source: RevenueBase Database · checked Sep 19, 2026
11	Innovaphone	Indirect evidence	Sindelfingen, GermanyHQ checked Sep 19, 2026	51-200	96 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 19, 2026
12	Broadcast Solutions Group	Strong evidence	Bingen Am Rhein, GermanyHQ checked Sep 19, 2026	201-500	96 contacts →
	Strong evidence “Broadcast Solutions is one of Europe’s biggest system integrators and consists of a group of companies acting worldwide.” Source: RevenueBase Database · checked Sep 19, 2026
13	PAN Dacom Networking AG	Indirect evidence	Dreieich, GermanyHQ checked Sep 19, 2026	201-500	90 contacts →
	Indirect evidence “Wenn das Internet eine Stadt wäre, bauen wir die Straßen.“ So beschreibt COO, Thomas Klein, das, was die Pan Dacom Networking AG (aus)macht.” Source: RevenueBase Database · checked Sep 19, 2026
14	Dekom Germany	Indirect evidence	22529, GermanyHQ checked Sep 19, 2026	201-500	86 contacts →
	Indirect evidence “We are DEKOM – your global partner for hybrid collaboration and smart meeting solutions.” Source: RevenueBase Database · checked Sep 19, 2026
15	Datatronic Software AG	Indirect evidence	Worms, GermanyHQ checked Sep 19, 2026	201-500	70 contacts →
	Indirect evidence “Mit über 40 Jahren Präsenz auf dem deutschen IT-Markt, mehr als aktiv zu betreuenden Unternehmen und 13 Standorten in ganz Deutschland und der Schweiz, gehört die Datatronic…” Source: RevenueBase Database · checked Sep 19, 2026
16	Gamma DE	Indirect evidence	Oberkotzau, GermanyHQ checked Sep 19, 2026	51-200	67 contacts →
	Indirect evidence “Die HFO Telecom GmbH verbindet modernste Technologien im Telekommunikationsbereich mit langjähriger Erfahrung.” Source: RevenueBase Database · checked Sep 19, 2026
17	Lutz & Grub AG	Partial evidence	Karlsruhe, GermanyHQ checked Sep 19, 2026	51-200	64 contacts →
	Partial evidence “Sie suchen ein Systemhaus zur Optimierung Ihrer IT-Infrastruktur Dann sind Sie bei uns genau richtig Wir sorgen für ein überschaubares und sicheres Netzwerkmanagement und helfen…” Source: RevenueBase Database · checked Sep 19, 2026
18	Heer Vi2vi Retail Solution Gmbh	Partial evidence	Malsch, GermanyHQ checked Sep 19, 2026	11-50	62 contacts →
	Partial evidence “Die Heer \| vi2vi Retail Solution GmbH als Teil der internationalen HERAS Group ist einer der führenden Systemintegratoren für IP-Video-Systeme, Business Video Intelligence &…” Source: RevenueBase Database · checked Sep 19, 2026
19	Funkwerk Security Solutions Gmbh	Indirect evidence	Nürnberg, GermanyHQ checked Sep 19, 2026	51-200	54 contacts →
	Indirect evidence “Funkwerk Security Solutions – Intelligente Sicherheit aus einer Hand Wir sind Ihr deutschlandweiter Partner für ganzheitliche Sicherheitslösungen, die Gebäude, Kommunikations- und…” Source: RevenueBase Database · checked Sep 19, 2026
20	Livingdata Gmbh	Partial evidence	Munich, GermanyHQ checked Sep 19, 2026	51-200	51 contacts →
	Partial evidence “LivingData plant, realisiert und betreut seit 1997 als bayernweit führendes Systemhaus maßgeschneiderte IT-Lösungen für Kommunen und Landkreise.” Source: RevenueBase Database · checked Sep 19, 2026
21	TMK Thomas Mack Kommunikation Gmbh	Indirect evidence	Muenzenberg, GermanyHQ checked Sep 19, 2026	51-200	50 contacts →
	Indirect evidence “Die nächste wichtige IT-Entscheidung steht an?” Source: RevenueBase Database · checked Sep 19, 2026
22	Abel & Käufl Mobilfunkhandels Gmbh	Indirect evidence	Landshut, GermanyHQ checked Sep 19, 2026	51-200	50 contacts →
	Indirect evidence “Die abel & käufl Mobilfunkhandels GmbH mit Hauptsitz in Landshut gehört seit 30 Jahren zu den führenden Anbietern professioneller Kommunikationstechnik.” Source: RevenueBase Database · checked Sep 19, 2026
23	Comnet Solutions Group	Partial evidence	Hannover, GermanyHQ checked Sep 19, 2026	51-200	47 contacts →
	Partial evidence “Die comNET GmbH ist ein inhabergeführtes IT-Systemhaus mit Hauptsitz in Hannover und Niederlassungen in Hamburg, Bremen, Braunschweig, Starnberg und Hilden.” Source: RevenueBase Database · checked Sep 19, 2026
24	Byon Gmbh	Indirect evidence	Frankfurt Am Main, GermanyHQ checked Sep 19, 2026	51-200	45 contacts →
	Indirect evidence “IT Managed Services und Cloud Telefonie 2006 wurde die byon gmbh mit Sitz in Frankfurt/Main gegründet.” Source: RevenueBase Database · checked Sep 19, 2026
25	Dierckgroup	Partial evidence	Schwentinental, GermanyHQ checked Sep 19, 2026	201-500	45 contacts →
	Partial evidence “Die DIERCK GROUP ist mit über 260 MitarbeiterInnen und über 140 Jahren Unternehmensgeschichte ein führendes Systemhaus für Informations- und Kommunikationstechnologie.” Source: RevenueBase Database · checked Sep 19, 2026

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: communication system integrators. 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 communication system integrators.
Partial evidence: Its own public description names part of communication system integrators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name communication system integrators. 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 25 of 603 communication system integrators based in Germany

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Communication system integrators based in Germany at a glance

As of Sep 19, 2026

52.9%Verified-email coverage

15.6Average contacts per company

11-50Median size (employees)

6.0%Largest-city concentration · Berlin

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

259

11-50

221

51-200

201-500

501-1,000

1,001-5,000

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 603 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 communication system integrators, 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 “communication system integrators”. 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 communication system integrators), 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 communication system integrators, 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, 4,974 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 19, 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.

Communication system integrators by metro

Communication system integrators in Berlin36

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 communication system integrators, 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 communication system integrators are there based in Germany?

RevenueBase identified 603 communication system integrators 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?

SVA System Vertrieb Alexander Gmbh, headquartered in Wiesbaden, tops this list with the largest team on record.

Which city has the most communication system integrators?

Berlin leads with 36 headquartered companies, followed by Hamburg (22) and Munchen (16).

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 4,974 verified decision-maker contacts tracked across these 603 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 19, 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.