T-Systems
T-Systems is a service provider for information technologies and digital transformation.
Market Share of T-Systems
Current Customer(s)
1225
Market Share (Est.)
0.60%
Ranking
#18
Top Competitors and Alternatives of T-Systems
The top three of T-Systems’s competitors in the VoIP category are CallRail with 21.14%, Skype with 19.18%, Cisco WebEx with 15.37% market share.
Popular Comparisons
Top Competitors and Alternatives of T-Systems
The top three of T-Systems’s competitors in the VoIP category are CallRail with 21.14%, Skype with 19.18%, Cisco WebEx with 15.37% market share.
T-Systems vs CallRail
T-Systems vs Skype
T-Systems vs Cisco WebEx
T-Systems vs Cisco VoIP
T-Systems vs Genesys PureCloud
T-Systems vs Google Voice
T-Systems vs Cisco Unified Communications Manager (CallManager)
T-Systems vs RingCentral
Customers of T-Systems
Around the world in 2026, over 1215 companies have started using T-Systems as VoIP tool.
| Customers | Employee Range | City | Region | Country | Social Links |
|---|---|---|---|---|---|
| Dassault Systemes Norway AS | 10,000+ | Velizy-Villacoublay | Ile-de-France | France |     |
| Capgemini | 10,000+ | Paris | Ile-de-France | France | |
| AGCO Corporation | 10,000+ | Duluth | Georgia | United States | |
| Audi | 10,000+ | Herndon | Virginia | United States | |
| The HEINEKEN Company | 10,000+ | Amsterdam | North Holland | Netherlands | |
| NTT DATA | 10,000+ | Tokyo | Tokyo | Japan | |
| Oracle Corporation | 10,000+ | Austin | Texas | United States | |
| Astrium | 10,000+ | Les Mureaux | Ile-de-France | France | |
| Centrica | 10,000+ | Windsor | England | United Kingdom | |
| Mphasis | 10,000+ | Bengaluru | Karnataka | India | |
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T-Systems Customers by Products and Services
The top three products and services offering customers that use T-Systems for VoIP are Cloud Services (81), Managed Services (55), Digital Transformation (55).
Customers
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T-Systems Customers by Employee Size
The majority of T-Systems's customers for the voip category fall in the company size of 10,000+ employees (296 companies), 100 - 249 employees (199 companies), 1,000 - 4,999 employees (179 companies).
Employee Size
T-Systems Customers by Geography
The top three geographies of T-Systems for voip are the United States with 287(30.70%), Germany with 161(17.22%), Brazil with 112(11.98%) customers respectively.
Customers
Employees of T-Systems
Also see other Products/Services by T-Systems in:
FAQ
Find answers to the most often asked questions by users.
Who are the top T-Systems competitors?
T-Systems’s Top competitors in the voip category are CallRail, Skype, Cisco WebEx. You can view a full list of T-Systems competitors here. 6sense uses advanced data mining and AI algorithms to track customers and competitors of T-Systems and 40,000 other technologies on the internet. You can also compare T-Systems and its feature with top competitors here : T-Systems vs CallRail T-Systems vs Skype T-Systems vs Cisco WebEx.
What is T-Systems customer distribution based on company size?
What is T-Systems market share in the voip?
What are the top countries that use T-Systems?
What are the top industries that use T-Systems?
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