D
- Daddy
- Dave Ride
- dBASE
- DD/PI
- Dead
- Degubbing
- Demcox
- Desired Feature
- Deslugger
- Desluggage
- Despoon
- Detray
- Dickhead
- Dick's Operating System
- Diet Choke
- Direct Deposit
- Doesn't Suck
- DogMail
- D'oh!
- Donut Semaphore
- Doo-da
- Double Buffering
- Douglie's
- Download
- Downstairs
- DPSD
- DPS1
- Drink of Life and Death
- Drive
- Drool-Proof Paper
- Drop Box
- Drop Mud
- Drop Trou
- DTC
- DTC Tree
- DUMBDrive