- D
- Dao
- DASL - Distributed Application Specification Language
- DASL - Datapoint's Advanced Systems Language
- DarkBASIC
- DarkBASIC Professional
| - Dataflex
- Datalog
- dBASE
- dc
- Deesel (formerly G)
- Delphi
- Dialect
| - DCL
- Dialog Manager
- DIBOL
- DL/I
- Dream Maker
- Dylan
- Dynace
|