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What are Mainframes?

Mainframes solutions mindshare

As of September 2025, in the Mainframes category, the mindshare of Fujitsu Server GS21 is 26.0%, down from 26.3% compared to the previous year. The mindshare of Unisys ClearPath Dorado is 15.7%, up from 11.4% compared to the previous year. The mindshare of IBM Z is 38.9%, down from 39.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Mainframes Market Share Distribution
ProductMarket Share (%)
IBM Z38.9%
Fujitsu Server GS2126.0%
Unisys ClearPath Dorado15.7%
Other19.39999999999999%
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