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What are Mainframes?

Mainframes solutions mindshare

As of October 2025, in the Mainframes category, the mindshare of Fujitsu Server GS21 is 25.2%, down from 27.4% compared to the previous year. The mindshare of Unisys ClearPath Dorado is 16.4%, up from 11.5% compared to the previous year. The mindshare of IBM Z is 38.5%, up from 38.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Mainframes Market Share Distribution
ProductMarket Share (%)
IBM Z38.5%
Fujitsu Server GS2125.2%
Unisys ClearPath Dorado16.4%
Other19.900000000000006%
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