| Company Name | Software Titles |
|---|---|
| CCH Tax and Accounting. A WoltersKluwer Company | 20 |
| CambridgeSoft | 21 |
| Capita Software Services | 24 |
| Chief Architect | 24 |
| CheckPoint | 29 |
| Creative Technology | 30 |
| Cypress | 31 |
| CNC Software | 32 |
| Crystal Decisions | 39 |
| Caterpillar | 43 |
| Crestron Electronics | 45 |
| Cyberlink | 47 |
| CommVault Systems | 47 |
| CA | 59 |
| Computer Associates | 70 |
| Cisco | 119 |
| Citrix | 202 |
| Corel | 222 |
| Canon | 241 |
| CentOS | 2,037 |