Similar to Unbound

DD-WRT

Debian Almquist shell

Deno (software)

DesktopBSD

Dev-C++

Dia (software)

Diff

Diff3

DigiKam

DirectFB

Discourse (software)

Distcc

Dlib

Docker (software)

Dolphin (file manager)

Dolphin (emulator)

Dragon Player

Drupal

DSpace

Dvd+rw-tools

Device independent file format#DVI-to-PDF converters

Dvips