| Name | Country | City | Rating | |
|---|---|---|---|---|
| PW Software, Inc. | 0.00 ±0.0 | |||
| Pyramid Software | 0.00 ±0.0 | |||
| Quality | 0.00 ±0.0 | |||
| Quality Educational Software | 0.00 ±0.0 | |||
| Quality Software | 0.00 ±0.0 | |||
 Quasimodos | Quasimodos | Poland | 0.00 ±0.0 | |
| Que Corporation | United States | Indianapolis | 0.00 ±0.0 | |
| QuelleSoft | 0.00 ±0.0 | |||
| Queue, Inc. | 0.00 ±0.0 | |||
| Quib Software | 0.00 ±0.0 | |||
| Quicksilva | 0.00 ±0.0 | |||
| QuinTech Systems | 0.00 ±0.0 | |||
| R & R Software | 0.00 ±0.0 | |||
| R. G. Barclay | 0.00 ±0.0 | |||
| R. M. Laffey | 0.00 ±0.0 | |||
| R. Nesset | 0.00 ±0.0 | |||
| R+E Software | 0.00 ±0.0 | |||
| Radarsoft (Germany) | Germany | 0.00 ±0.0 | ||
| Radarsoft (Netherlands) | Netherlands | 0.00 ±0.0 | ||
| Radical Software | 0.00 ±0.0 |
