| Open-ftpd | 1 | 1 |
| Open-device Project | 1 | 1 |
| Open Source Point Of Sale Project | 1 | 1 |
| Open Projects Network | 1 | 1 |
| Open Cubic Player | 1 | 1 |
| Open Cas Project | 1 | 1 |
| Ontrack Project | 1 | 1 |
| Onlineonly | 1 | 1 |
| Online Sports Complex Booking Project | 1 | 1 |
| Online Services Project | 1 | 1 |
| Online Pizza Delivery System Project | 1 | 1 |
| Ontarioabandonedplaces | 1 | 1 |
| Ons | 1 | 1 |
| Online Web Building | 1 | 1 |
| Ontall | 1 | 1 |
| Onnx | 1 | 1 |
| Onworks | 1 | 1 |
| Online-solutions | 1 | 1 |
| Online Voting System Project | 1 | 1 |
| Ontariosystems | 4 | 1 |
