Similar to GNU_Privacy_Guard

DC++

DD-WRT

Deno (software)

Dev-C++

Diff

Diff3

Discourse (software)

Dlib

Docker (software)

Dolphin (file manager)

Dolphin (emulator)

Dovecot (software)

Dragon Player

Drupal

DSpace

DVD Flick

Device independent file format#DVI-to-PDF converters

Dvips

Eclipse (software)

Elasticsearch