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DBPro
DeCSS
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Dietlibc
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Dir (DOS)
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Dirac (software)Direct2D
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DirectShowDirectWrite
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DMDScript
Dnsmasq
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DOS extenderDRA-CAD
DraftSight
DROP (SQL)
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Dynamicweb
DyNet
E-Business Suite
Oracle E-Business SuiteEAR
EAR (file format)