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What are Mainframes?

Mainframes solutions mindshare

As of August 2025, in the Mainframes category, the mindshare of Fujitsu Server GS21 is 26.1%, up from 25.6% compared to the previous year. The mindshare of Unisys ClearPath Dorado is 15.7%, up from 11.7% compared to the previous year. The mindshare of IBM Z is 38.3%, down from 39.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
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