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DeSmuME
Devil-Linux
Dietlibc
DietlibcDigital Nature Tools
Dir (DOS)
Dir (command)DIRAC
Dirac (software)Direct2D
Direct2DDirectShow
DirectShowDirectWrite
DirectWriteDJbox
DMDScript
Dnsmasq
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DOS extenderDr.Web
Dr.WebDRA-CAD
DraftSight
DROP (SQL)
Data definition language#DROP statementDuckStation
DVD Flick
DVD FlickDVD Shrink
DVD ShrinkDVD プレーヤー (ソフトウェア)
DVD Player (macOS)DVDFab HD Decrypter
DWARF
DWARFDWGdirect
Dynamicweb
DyNet
E-Business Suite
Oracle E-Business SuiteEAR
EAR (file format)