Companies using IBM i (i5/OS) by IBM in 2025
As of 2025, 131 verified companies use IBM i (i5/OS) – across industries, company sizes, and geographies. This is real, verified data. Whether you’re looking to analyze the market, build a target list, or get a sales edge – this is your starting point.
What is IBM i (i5/OS) by IBM?
IBM i (i5/OS) by IBM is an operating system known for its stability, security, and business-oriented architecture. It provides a fully integrated environment with a built-in database, security features, and middleware. It is commonly utilized across various industries, especially in IT departments within finance, manufacturing, retail, and healthcare companies, for managing business-critical applications, data processing, and system management.
Last updated date
Number of Companies using
131
The majority are based in the
United States
Most common industry?
Finance
IBM i (i5/OS)’s sample user list in 2025
We have data on 131 companies that use IBM i (i5/OS). Our IBM i (i5/OS) customers list is available for download and comes enriched with vital company specifics, including industry classification, organizational size, geographical location, funding rounds, and revenue figures, among others.
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IBM i (i5/OS) users and customers by country
2.6K Companies
2.6K Companies
2.6K Companies
2.6K Companies
Where IBM i (i5/OS) Shows Up Most
IBM i (i5/OS) is used across a wide range of sectors:
Finance
Manufacturing
Banking
Insurance
Retail
From lean startups to global enterprises, IBM i (i5/OS)’s footprint is wide, and that means opportunity.

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FAQs
Contact UsHow latest this data is?
This data is updated on August 17, 2025
What is IBM i (i5/OS)?
IBM i (i5/OS) is an operating system known for its stability, security, and business-oriented architecture. It provides a fully integrated environment with a built-in database, security features, and middleware.
How many companies are using IBM i (i5/OS) in 2025?
As of 2025, there are 131 verified companies using IBM i (i5/OS).
What industries are commonly using IBM i (i5/OS)?
IBM i (i5/OS) is commonly utilized across various industries, especially in IT departments within finance, manufacturing, retail, and healthcare companies.
What is the primary use of IBM i (i5/OS) in organizations?
It is used for managing business-critical applications, data processing, and system management.
Which country has the highest number of companies using IBM i (i5/OS)?
The United States has the highest number of companies using IBM i (i5/OS).