D
- Dagwood — Sun
- Daktari — Sun SunFire V880
- Dapper Drake — Ubuntu 6.06 LTS
- Dark Matter — Adobe Photoshop CS
- Dart LC — Apple Macintosh PowerBook 165
- Dartanian — Apple Macintosh PowerBook 180
- Darth Vader — College Linux 2.3
- Darwin — Apple Macintosh Quadra 900
- Darwin — Low-Level Unix layer of Apple Mac OS X
- Darwin — Sun PCI-based Ultra workstations
- Daybreak — Linux Multi-Disk Howto 0.17
- Dayton — Yellow Dog Linux 2.3
- Daytona — Microsoft Windows NT 3.51
- DBLite — Apple Macintosh PowerBook Duo 210/230
- Decaf — Sun 14" monitor
- Deepcove — XMetaL Author 4.0
- Deepmind — Respond.com
- Deerfield — Intel processors due 2003
- dejaVu — Sun PC file viewer
- Delorean — Sun 72" StorEdge Expansion Cabinet
- Derringer — Apple Macintosh PowerBook 100
- Deschutes — Intel Pentium 2
- Detroit — Microsoft Windows 95's cancelled successor
- Deuterium — Sun Ultra 60
- Devel — Arch Linux 0.4
- Diamond — Sun cPCI FC dual port adapter
- Diana — Apple ][e
- Diesel — Adobe Flash CS4
- Dilbert — Sun SCSI2 RAID5 Storage, StorEdge A1000, StorEdge D1000
- Dinnerbox — Sun 5¼" Full Height Lunchbox
- Dirty Bird — Lunar Linux 1.0
- Discovery — Sun 1.3Gb SCSI disk
- Discus — Sun ???
- Dixon — Intel Mobile Pentium 2
- Dockyard — Ark Linux 1.0
- Dollhouse Simulator — The Sims
- Dolphin — Mandrake Linux 9.0
- Dolphin — Nintendo Gamecube
- Donut — Android 1.6
- Dothan — Intel Pentium M 700-series 90 nm processor
- Dove — Apple ][x
- Dover — Sun next generation JavaStation
- Dobra Voda — KDE 3.2 Beta 2 ("dobra voda" is Czech for "good water")
- DR1 — Apple Rhapsody developer release 1
- DR2 — Apple Rhapsody developer release 2
- Dragon — Arch Linux 0.4
- Dragon — Sun SPARCServer 2000
- Dragon+ — Sun SPARCCenter 2000E
- Dublin — Sun Ultra Enterprise E150
- Duo — an intel CPU core specification
- Duracell — Sun PDB 1.2 on Ultra Enterprise 2
- Duraflame — Sun Ultra Enterprise 3000
- Duraflame+ — Sun Ultra Enterprise 3500
- Dyne:trax — dyne:bolic Linux 1.2 and 1.3
Read more about this topic: List Of Computer Technology Code Names