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IBM LinuxONE vs IBM Z vs Unisys ClearPath Dorado comparison

IBM LinuxONE and IBM Z are both solutions in the Mainframes category. IBM LinuxONE is ranked #5, while IBM Z is ranked #1. IBM LinuxONE holds a 7.9% mindshare in M, compared to IBM Z’s 37.1% mindshare. Additionally, 100% of IBM Z users are willing to recommend the solution.
IBM LinuxONE
  • 181 Views
  • 181 Comparison Views
IBM Z
Read 1 IBM Z review
  • 516 Views
  • 516 Comparison Views
100% willing to recommend
Unisys ClearPath Dorado
  • 208 Views
  • 208 Comparison Views

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Mindshare comparison

As of November 2025, in the Mainframes category, the mindshare of IBM LinuxONE is 7.9%, down from 10.2% compared to the previous year. The mindshare of IBM Z is 37.1%, down from 38.5% compared to the previous year. The mindshare of Unisys ClearPath Dorado is 16.8%, up from 12.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Mainframes Market Share Distribution
ProductMarket Share (%)
IBM Z37.1%
Unisys ClearPath Dorado16.8%
IBM LinuxONE7.9%
Other38.199999999999996%
Mainframes
 

Featured Reviews

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DS
Provides processing of mission critical applications.
Batch DB Online systems. Provides processing of mission critical applications. Ability to handle heavy mixed workloads. More graphical, user-friendly, interface for systems changes. However, IBM is attempting to do this via OSMF.
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872,869 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
No data available
Financial Services Firm
15%
Computer Software Company
11%
Educational Organization
7%
Media Company
7%
No data available
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
No data available
No data available
 

Comparisons

No data available
Fujitsu Server GS21 vs IBM Z Logo
Fujitsu Server GS21 vs IBM Z
Compared 52% of the time
Unisys ClearPath Libra vs IBM Z Logo
Unisys ClearPath Libra vs IBM Z
Compared 10% of the time
More IBM Z Competitors
Unisys ClearPath Libra vs Unisys ClearPath Dorado Logo
Unisys ClearPath Libra vs Unisys ClearPath Dorado
Compared 45% of the time
More Unisys ClearPath Dorado Competitors
 

Also Known As

LinuxONE Emperor II, LinuxONE Rockhopper, LinuxONE
No data available
ClearPath Forward Dorado 8400 Series, ClearPath Forward Dorado 6400 Series, ClearPath Forward Dorado 4400 Series
 

Overview

Information not available
IBM

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

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.

IBM
Information not available
Unisys
 

Sample Customers

Learn Forward
Fujitsu
Information Not Available