> Are there other non-IBM companies that have a lot of active mainframes? I was under the impression that the vast majority of mainframes in use were System Z

> Are there other non-IBM companies that have a lot of active mainframes? I was under the impression that the vast majority of mainframes in use were System Z or its kin, but maybe I'm just falling for marketing. I think Unisys is still around... https://www.unisys.com/offerings/clearpath-forward/clearpath-forward-products https://www.unisys.com/offerings/clearpath-forward/clearpath... https://en.wikipedia.org/wiki/OS_2200 https://en.wikipedia.org/wiki/OS_2200 https://www.unisys.com/news/News%20Release/New-Unisys-High-End-ClearPath-Systems-Deliver-Mainframe-Performance-on-an-Intel-Based-Platform https://www.unisys.com/news/News%20Release/New-Unisys-High-E...