Mainframes — companies field
5 companys in the mainframes field.
| Name | Years | Status | Field | Founded by |
|---|---|---|---|---|
| IBMInternational Business Machines, Big Blue | 1911– | Alive | Mainframes | Charles Ranlett Flint |
| Sperry Rand | 1955–1986 | Superseded | Mainframes | Merger of Sperry and Remington Rand |
| ICLInternational Computers Limited | 1968–2002 | Superseded | Mainframes | UK government merger |
| Amdahl Corporation | 1970–1997 | Superseded | Mainframes | Gene Amdahl |
| Unisys | 1986– | Alive | Mainframes | Merger of Burroughs and Sperry |