IBM Z Reviews

Name: IBM Z
Brand: IBM
Rating: 5.0 (1 reviews)

Vendor: IBM

5.0 out of 5

1 review
100% willing to recommend

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What is IBM Z?

IBM Z mainframes deliver millisecond response time, extreme reliability, near 100% uptime and the world’s best security.

IBM Z is the #1 ranked solution in top Mainframes. PeerSpot users give IBM Z an average rating of 10.0 out of 10. IBM Z is most commonly compared to Fujitsu Server GS21: IBM Z vs Fujitsu Server GS21. IBM Z is popular among the large enterprise segment, accounting for 50% of users researching this solution on PeerSpot. The top industry researching this solution are professionals from a financial services firm, accounting for 12% of all views.

IBM Z mindshare

As of January 2026, the mindshare of IBM Z in the Mainframes category stands at 34.8%, down from 39.5% compared to the previous year, according to calculations based on PeerSpot user engagement data.

Mainframes Market Share Distribution
Product	Market Share (%)
IBM Z	34.8%
Fujitsu Server GS21	23.5%
Unisys ClearPath Dorado	17.7%
Other	24.0%

Mainframes

Top industries

By visitors reading reviews

Financial Services Firm

12%

Computer Software Company

Media Company

University

Government

Educational Organization

Manufacturing Company

Retailer

Legal Firm

Non Profit

Hospitality Company

Marketing Services Firm

Outsourcing Company

Real Estate/Law Firm

Healthcare Company

Construction Company

Renewables & Environment Company

Performing Arts

Program Development Consultancy

Insurance Company

Recreational Facilities/Services Company

Logistics Company

Consumer Goods Company

Energy/Utilities Company

Aerospace/Defense Firm

Compare IBM Z with alternative products

Learn more about IBM Z

The newest mainframe, IBM z14 (z14), is designed for trusted digital experiences. This enterprise system delivers pervasive encryption, stronger clouds, real time insights, machine learning and transparent blockchain.