| cdl | ConceptDraw PRO Library |
| cdlx | Adobe Audition CD Layout Data |
| cdlx | ConceptDraw PRO XML Library |
| cdm | Sybase PowerDesigner Conceptual Data Model |
| cdmia | Cloud Data Management Interface Capability Data |
| cdmic | Cloud Data Management Interface Container |
| cdmid | Cloud Data Management Interface Domain Data |
| cdmio | Cloud Data Management Interface Object |
| cdmiq | Cloud Data Management Interface Queue Data |
| cdmp | WCS Device Model Profile |
| cdoc | DigiDoc Crypted Document |
| cdr | TSP-INet Server CDR Data |
| cdrt | CorelDraw Shader Data |
| cdrt | CorelDraw Symbol Library |
| cdrx | Bosch Crash Data Retrieval Data |
| cdss | CorelDRAW Style Sheet |
| cdt | ConceptDraw PRO Template |
| cdv | Broken Cross Disk Manager v1 Database |
| cdv | CatDV Catalog |
| cdv | SmartWare Communications Driver |
| cdw | CADKEY Organized Dialog Data |
| cdwlxml | CDWinder License Data |
| cdws | CorelDraw X7 Workspace |
| cdx | Bentley MicroStation Cell Library Index |
| cdx | ConceptDraw PRO XML Document |
| cdx | dBASE Compound Index |
| cdx3 | Cochlear Data Exchange File |
| cea | Compressed ENVIS Archive |
| ced | EEGLAB Channel Data |
| cedata | Pogoplug Data |
| cedf | Ultra TC Configuration Editor Data |
| cee | CN3 Compressed Extended Ephemeris Data |
| cef | QPEACE Cluster Exchange Format Data |
| cef | SanDisk CruzerLock Encrypted Data |
| cef | SciFinder Chemical eXchange Format Data |
