| Sysdig, Inc. | California |
| Sysdig, Inc. | |
| Sysdyne | |
| SysGen, Inc. | Arizona |
| Sysintellects, LLC | Texas |
| SYSLIX | Delaware |
| SysLogic, Inc. | Wisconsin |
| SysMaster | California |
| Sysmex Innostics, Inc. | Maryland |
| Sysmind | New Jersey |
| Sysnet Solutions | California |
| SYSO Technologies | |
| SysOp Tools, Inc. | California |
| Syspro Technologies, Inc. | |
| Systaaq Diagnostic Products | Virginia |
| Systat Software, Inc. | Illinois |
| Systech Corporation | California |
| Systech Displays, Inc. | California |
| Systech USA | California |
| Systech, Inc. | New Jersey |
| Systel, Inc. | Georgia |
| System | Massachusetts |
| System Analysis Services | Massachusetts |
| System Biosciences, LLC | California |
| System Concepts | Texas |
| System Concepts, Inc. | Arizona |
| System Dynamics, Inc. | California |
| System Era Softworks | Washington |
| System Experts | Massachusetts |
| System High Corporation | Virginia |
| System Initiative, Inc. | California |
| System Integration Architects, LLC | Illinois |
| System Plus | |
| System Restore | Idaho |
| System Soft Technologies | Florida |
| System Source | Maryland |
| System Studies & Simulation, Inc. | Alabama |
| System Studies, Inc. | California |
| System Support Products, Inc. | Virginia |
| System Surveyor Corporation | Texas |
| System Tech, Inc. | Idaho |
| System to ASIC, Inc. | Washington |
| System X Designs | |
| System1 | California |
| System260 | |
| System76, Inc. | Colorado |
| SystemArchitecture.NET | Maine |
| Systemart, LLC | |
| Systematic Ventures | New York |
| Systematic Vision Corporation | Massachusetts |