Programme, Freeware und Shareware zum Download
| Hersteller: | Link: |
| C One | http://www.c1tech.com |
| CalComp | http://www.calcomp.com |
| Canon | http://www.canon.de |
| Casio | http://www.casio.co.uk/ |
| CH Products | http://www.chproducts.com |
| Chaintech | http://www.chaintech.com.tw |
| Cherry | http://www.cherry.de |
| Chicony | http://www.chicony.de |
| Chinon | http://www.chinon.co.jp |
| Chips & Technologies | http://www.chips.com |
| Chrontel | http://www.chrontel.com |
| Cirque | http://www.cirque.com |
| Cirus Logic | http://www.cirrus.com |
| CIS Technologie Inc. | http://www.cis.com.tw |
| Cisco | http://www.cisco.com |
| Citizen | http://www.citizen.co.uk |
| CNet Technology | http://www.cnet.com.tw |
| Cogent | http://www.adaptec.com |
| Compaq | http://www.compaq.de |
| Compex | http://www.cpx.com |
| Compuprint | http://www.compuprint.it |
| Conner (jetzt Seagate) | http://www.seagate.com |
| Creative Labs | http://www.europe.creative.com |
| Creatix | http://www.creatix.de |
| Cyberdrive | http://www.cyberdrive.de |