| Gataway | Hewlett Packard | American Arium | Compaq | EPC Humingbird | MacNeal Schwendler | Nance |
| Hitachi | IBM | AMI | Hewlett Paccard | IBM | Mental Images | Open Market |
| ICL | NEC | Evants & Suthrland | Microsoft Novell | MetaWare Microsoft | Mentor Graphics | Oracle PeopleSoft |
| NCR | Silicon Graphics | Phoenix | IBM/SCO | NAG PSI | Parametric | SAP SAS |
| Sequent | 3D Labs | Silicon Graphics | SCO | Softimage | Torrent | |
| Siements | Unisys | Sun | Sun | Synopsys | WebLogic |
| IA and RISC OEMS | Third Party Vendors | Operation System Vendors | Software Tolls & Inf. Vendors | Workstation Software Vendors | Enterprise Software Vendors |
