| ID | Name | Type |
|---|---|---|
| #17112 | CJC Marketing | S |
| #17113 | CK Computafix | R |
| #17114 | CK Software | S |
| #2101 | CKS | ? |
| #2102 | CLJ Industries | Z |
| #2103 | CM | ? |
| #17115 | CMD | S |
| #2104 | CMG | ? |
| #2105 | CMTB Animation | Z |
| #2106 | CNGSoft | Z |
| #2107 | CNS | ? |
| #2108 | CO | ? |
| #2109 | COOK | ? |
| #19992 | COPE-Soft | P |
| #2110 | CORE Design Ltd | P |
| #2111 | COSM-J2+ | ? |
| #20070 | COSMON Software | S |
| #2112 | COSMOS designers | Z |
| #21340 | CP | P |
| #2113 | CP Software | P |