| Name | Country | City | Rating | |
|---|---|---|---|---|
| Silver Burdett and Ginn, Inc. | 0.00 ±0.0 | |||
| Silver Burdett Company | 0.00 ±0.0 | |||
| Silver Creek Observatory | 0.00 ±0.0 | |||
| Sim Computer Products, Inc. | 0.00 ±0.0 | |||
| Simon & Schuster | 0.00 ±0.0 | |||
| Simon Software | 0.00 ±0.0 | |||
| SimpleSoft | 0.00 ±0.0 | |||
| Simplex Software | 0.00 ±0.0 | |||
| Sir Video | 0.00 ±0.0 | |||
| Sir-Tech Software, Inc. | 0.00 ±0.0 | |||
| Sirius Software | 0.00 ±0.0 | |||
| Sirius Synthesis | 0.00 ±0.0 | |||
| SIS | 0.00 ±0.0 | |||
| SISTAP | 0.00 ±0.0 | |||
| Sitsoft | 0.00 ±0.0 | |||
| SK Wizards | 0.00 ±0.0 | |||
| Skillware Corporation | 0.00 ±0.0 | |||
| Skydata | 0.00 ±0.0 | |||
| SLCC Journal | 0.00 ±0.0 | |||
| Smada Enterprises, Inc. | 0.00 ±0.0 |
